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Wyszukujesz frazę "Heavy metals" wg kryterium: Temat


Tytuł:
Awareness of parents of preschool children about selected heavy metals in food
Świadomość rodziców dzieci w wieku przedszkolnym dotycząca wybranych metali ciężkich występujących w żywności
Autorzy:
Dolibóg, Magdalena
Osmala-Kurpiewska, Weronika
Powiązania:
https://bibliotekanauki.pl/articles/28408110.pdf
Data publikacji:
2024-02-29
Wydawca:
Śląski Uniwersytet Medyczny w Katowicach
Tematy:
children
heavy metals
food
awareness
health risk
food route
dzieci
metale ciężkie
żywność
świadomość
ryzyko zdrowotne
droga pokarmowa
Opis:
INTRODUCTION: Human activity has contributed to the widespread distribution of heavy metals in the natural environment. The effects of exposure to heavy metals may not become apparent until many years later. Understanding and understanding the health risks of heavy metals in food is essential to protect children’s health. The study aimed to assess the level of knowledge about heavy metals, their occurrence in food, and the health risks to children from eating food contaminated with heavy metals. MATERIAL AND METHODS: The research tool was the author’s questionnaire, consisting of the “specification” part and closed questions, mainly of a single choice. The study group consisted of 100 parents of two kindergartens located in the Silesian voivodeship. The results of the survey questionnaire were developed in Microsoft Office Excel 2019. Statistica 13 (StatSoft) was used for statistical analysis (chi-square test) and statistical significance was assumed at the level of α = 0.05. RESULTS: Parents of preschool-age children are not aware of the associated risks of exposure to heavy metals. Most of the respondents did not read the general information on the presence of heavy metals in food products. CONCLUSIONS: The awareness of preschool-age parents about selected heavy metals in food is low. It is recommended to implement educational activities to increase the level of parental knowledge about possible health consequences and ways to reduce the health risk resulting from exposure to heavy metals through food.
WSTĘP: Działalność człowieka przyczyniła się do szerokiego rozpowszechnienia metali ciężkich w środowisku naturalnym. Skutki narażenia na metale ciężkie mogą się ujawnić dopiero po upływie wielu lat. Narażenie dzieci na metale ciężkie drogą pokarmową może stanowić istotne ryzyko zdrowotne, dlatego wiedza oraz postawy zdrowotne rodziców i opiekunów prawnych mają niebagatelne znaczenie w zakresie minimalizacji ryzyka zdrowotnego dzieci. Celem pracy była ocena poziomu wiedzy rodziców na temat metali ciężkich, ich występowania w żywności oraz zagrożeń dla zdrowia dzieci, wynikających ze spożywania żywności zanieczyszczonej metalami ciężkimi. MATERIAŁ I METODY: Narzędzie badawcze stanowił autorski kwestionariusz ankiety, składający się z części „metryczka” oraz pytań zamkniętych, głównie jednokrotnego wyboru. Grupę badaną stanowiło 100 rodziców z dwóch placówek przedszkolnych zlokalizowanych na terenie województwa śląskiego. Wyniki kwestionariusza ankiety zostały opracowane w programie Microsoft Office Excel 2019. Za pomocą programu Statistica 13 (StatSoft) wykonano analizę statystyczną (test chi-kwadrat), a istotność statystyczną przyjęto na poziomie α = 0,05. WYNIKI: Rodzice dzieci w wieku przedszkolnym nie są świadomi zagrożeń związanych z ekspozycją na metale ciężkie. Większość respondentów nie zapoznawała się z informacjami ogólnymi na temat obecności metali ciężkich w produktach spożywczych. WNIOSKI: Świadomość rodziców dzieci w wieku przedszkolnym dotycząca wybranych metali ciężkich występujących w żywności jest niska. Wskazane jest wdrożenie działań edukacyjnych w celu zwiększenia poziomu wiedzy rodziców na temat możliwych następstw zdrowotnych i sposobów zmniejszania ryzyka zdrowotnego wynikającego z narażenia na metale ciężkie drogą pokarmową.
Źródło:
Annales Academiae Medicae Silesiensis; 2024, 78; 61-72
1734-025X
Pojawia się w:
Annales Academiae Medicae Silesiensis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy metals in human milk: literature review
Metale ciężkie w pokarmie kobiecym: przegląd piśmiennictwa
Autorzy:
Młodawska, Marta
Młodawski, Jakub
Świercz, Anna
Świercz, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/30148305.pdf
Data publikacji:
2024
Wydawca:
Akademia Bialska im. Jana Pawła II
Tematy:
heavy metals
human milk
breastfeeding
mercury
lead
metale ciężkie
pokarm kobiecy
karmienie naturalne
rtęć
ołów
Opis:
The escalating global environmental pollution leads to the increased exposure to heavy metals, including chromium, mercury, copper, and lead. These substances ubiquitous in our environment and food, can induce severe health issues, including intellectual disabilities, kidney damage, and certain types of cancer. The article presents a current literature review concerning breast milk and its potential contamination with heavy metals. Research reveals varied levels of heavy metal contamination in human milk, contingent on geographical location and lifestyle factors. Some studies have detected a higher concentration of heavy metals in urban areas compared to suburban ones, while others have reported an increased level in the milk of women who smoke cigarettes. Moreover, the concentration of heavy metals in human milk often exceeded permissible limits set by the World Health Organization. Given the increasing exposure to heavy metals, it is imperative to monitor their concentration in food and conduct further studies to understand the risk factors for exposure.
Narastające globalne zanieczyszczenie środowiska prowadzi do zwiększonej ekspozycji na metale ciężkie, w tym chrom, rtęć, miedź i ołów. Substancje te, powszechne w naszym otoczeniu i żywności, mogą powodować poważne problemy zdrowotne, w tym niepełnosprawność intelektualną, uszkodzenie nerek i niektóre rodzaje nowotworów. W artykule został przedstawiony aktualny przegląd piśmiennictwa dotyczący pokarmu kobiecego i potencjalnego skażenia go metalami ciężkimi. Stwierdzono zróżnicowane poziomy zanieczyszczenia mleka kobiecego metalami ciężkimi w zależności od lokalizacji geograficznej i czynników stylu życia. Niektóre badania wykazały wyższe stężenie metali ciężkich w obszarach miejskich w porównaniu z przedmieściami, podczas gdy w innych stwierdzono zwiększony ich poziom w mleku kobiet palących papierosy. Co więcej, stężenie metali ciężkich w mleku kobiecym często przekraczało dopuszczalne limity ustalone przez Światową Organizację Zdrowia. Ze względu na rosnącą ekspozycję na metale ciężkie, niezbędne jest monitorowanie ich stężenia w żywności i przeprowadzanie dalszych badań, aby zrozumieć czynniki ryzyka ekspozycji.
Źródło:
Health Problems of Civilization; 2024, 18, 1; 55-61
2353-6942
2354-0265
Pojawia się w:
Health Problems of Civilization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ability of Humic Acid in the Absorption of Heavy Metal Content of Lead and Iron in Fish Culture Media
Autorzy:
Kiswanto
Wintah
Powiązania:
https://bibliotekanauki.pl/articles/24201770.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
humic acid
heavy metals
fish farming media
Opis:
The young coal mining pits (young pits) found in West Aceh cause many problems. These pits that form ponds have the potential to be utilized for aquaculture activities. However, the main problem faced in the young pits is the high content of heavy metals. This makes the ponds dangerous for fish farming. Hazardous heavy metals in coal mines are Pb and Fe. Humic acid is one of the materials that can be used to minimize heavy metals and increase water pH. The use of humic acid is more efficient because this technology is easy and cheap and the raw materials are abundant. Humic acid acts as a substance of cation exchange ability found in compost. This research has a long-term goal of making humic acid contained in compost as an alternative material that can minimize heavy metals Pb and Fe, so that it can be used for fish farming activities. The specific objective is to determine the best capacity (dose of humic acid) in minimizing heavy metals and increasing the pH of young pond water in former mines and its effect on fish farming. This research method used a completely randomized design consisting of one factor, namely the dose of humic acid (0 g/L, 2.5 g/L, 5 g/L, 7.5 g/L) and three replications. The results showed that humic acid was able to minimize the content of heavy metals Pb and Fe in coal mine water with the best dose of 5 g/L. The percentage reduction produced was more than 90%. The results of fish rearing using ex-mining pond water treated with humic acid showed that the survival rate and growth rate of fish were higher.
Źródło:
Journal of Ecological Engineering; 2023, 24, 5; 95--102
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Possibility of Heavy Metal Ions Removal from Aqueous Solutions on Fruit Pomace
Autorzy:
Krasowska, Małgorzata
Kowczyk-Sadowy, Małgorzata
Szatyłowicz, Ewa
Obidziński, Sławomir
Powiązania:
https://bibliotekanauki.pl/articles/24201639.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
fruit pomace
adsorption
heavy metals
Opis:
Pomace from apples, grapes, blackcurrants, and oranges is a waste product of fruit processing, which is formed during the production of juices. Pomace is a rich source of biologically active compounds such as polyphenols, carotenoids, or vitamins. They also contain pectin, cellulose, lignin, proteins, and minerals. All these components, apart from having many beneficial properties for human health, also show sorption properties towards heavy metal ions. Therefore, this study aimed to evaluate the possibility of removing lead (II) and cadmium (II) ions from aqueous solutions by adding apple, grape, black currant, and orange pomace as well as to determine the adsorption efficiency of selected heavy metals. The studies were carried out in model systems. The results of the research showed that lead (II) and cadmium (II) ions are adsorbed on fruit pomace. The highest removal of cadmium (II) ions was observed in orange pomace and of lead (II) ions in apple pomace. The maximum tested cadmium ions absorption capacity was: 0.117235 mg/g in the case of freeze-dried apple pomace; 0.08618 mg/g in the case of freeze-dried currant pomace; 0.21915 m/g in the case of freeze-dried grape pomace and 0.29549 mg/g in the case of freeze-dried orange pomace. On the other hand, the maximum absorption of lead ions was: 0.457 mg/g in the case of freeze-dried apple pomace; 0.442 mg/g in the case of freeze-dried currant pomace; 0.3445 mg/g in the case of freeze-dried grape pomace and 0.421 mg/g in the case of freeze-dried orange pomace. On the basis of the performed measurements, it can be concluded that the tested waste can potentially be used as a cheap biosorbent for removing heavy metal ions from dilute aqueous solutions.
Źródło:
Journal of Ecological Engineering; 2023, 24, 3; 169--177
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Fly Ash from Thermal Treatment of Sewage Sludge According to the Applicable Standards
Autorzy:
Rutkowska, Gabriela
Powiązania:
https://bibliotekanauki.pl/articles/24201787.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
fly ash
sewage sludge
physical and chemical properties
concrete
compressive strength
heavy metals
Opis:
The restrictions on carbon dioxide emissions introduced by the European Union encourage experimental work on new generation materials containing smaller amounts of clinker. Currently, silica fly ash from the combustion of hard coal is widely used in cement and concrete technology in Europe and in Poland. Their wide application is mainly determined by their chemical and phase composition, especially pozzolanic activity, their high fineness, similar to cement. The aim of the research was to assess the properties of fly ash from thermal treatment of sewage sludge in terms of use in concrete technology in relation to EN 450-1, ASTM-C618-03 and ASTM C379-65T. The obtained test results confirm that the tested material has a different physicochemical composition and does not meet the requirements related to the use of ash in the production of concrete. In addition, the research showed the possibility of producing ordinary concrete, modified with fly ash from thermal treatment of sewage sludge. The average compressive strength for concrete containing 15% of ash from Cracow was set at 48.1 MPa and 49.2 MPa after 28 and 56 days of maturation, for ash from Warsaw at 42.0 MPa and 45.1 MPa, and for ash from Łódź at 36.2 MPa and 36.2 MPa. The determined concentrations of heavy metals are below the maximum values to be met when discharging waste water into the ground or water, the leaching limits required for accepting inert waste for disposal and for substances particularly harmful to the aquatic environment. On this basis, it was found that the migration of heavy metals from concretes with ash addition to the aquatic environment is insignificant and should not be a significant problem.
Źródło:
Journal of Ecological Engineering; 2023, 24, 3; 20--34
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Heavy Metals Contamination in Spoil Heaps of Ain Aouda Mine (Taza, Morocco)
Autorzy:
Assabar, Narmine
Lahmidi, Ikram
Jabrane, Raouf
Powiązania:
https://bibliotekanauki.pl/articles/24201747.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
heavy metals
pollution index
Ain Aouda mine
geoaccumulation index
enrichment factor
Opis:
The purpose of this study is to evaluate the level of heavy metal contamination in the spoil heaps of the former Ain Aouda mine (Taza). In this regard, solid samples of the study area were sampled. The set of analyses carried out have detected the presence of zinc (Zn), lead (Pb), copper (Cu), arsenic (As) and nickel (Ni) that remain in these metal discharges. The calculation of contamination/pollution indices: the Geo Accumulation Index (Igeo), the Enrichment Factor (EF) and the Pollution Index (IP) were used to predict the extent of heavy metal contamination. The results of this study suggest that the spoil heaps reveal polymetallic contaminations allowing the trace metal elements to be classified in the following order Zn ˃ Pb ˃ As ˃ Cu > Ni. Knowing well that the alteration and erosion of this stock of mine waste could contribute to the degradation of the natural environment by these elements that are present.
Źródło:
Journal of Ecological Engineering; 2023, 24, 3; 224--231
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Benefits and Risks of Liquid Sewage Sludge Recycling in Agricultural Spreading – A Case Study of WWTP of Skhirat, Morocco
Autorzy:
Achkir, Abdelmajid
Aouragh, Abdelhakim
El Mahi, Mohammed
Lotfi, El Mostapha
Kabriti, Mohamed
Abid, Abdesalam
El Moussaoui, Tawfik
Yagoubi, Maâmar
Powiązania:
https://bibliotekanauki.pl/articles/2202347.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
sewage sludge
WWTP
wastewater treatment plant
Skhirat
Morocco
liquid sludge
physicochemical parameter
bacteriological parameter
heavy metals
agricultural
Opis:
The sewage sludge recycling as an agricultural land resource has received a great deal of attention worldwide. This practice has highly increased because of ever-increasing municipal wastewater production and the awareness of its fertilizing potential as amendment resources. However, there is a concern about land spreading linked mainly to health associated risks due to the presence of diverse pollutants. Thus, sewage spreading management is a key factor the guarantees benefits and avoids risks. The present work aimed to investigate the benefits and risks of sewage sludge (SS) application on agricultural land. To this end, physicochemical main parameters and bacteriological indicators, fecal coliform (FC) and fecal streptococcus (FS), of the sewage sludge generated form WWTP of Skhirat, Morocco, were performed during the period 2018–2019. The obtained results of physicochemical parameters reveal high concentration of organic matter in SS, which reach 96.3 mg/l, and in nutrients. Indeed, total Kjeldahl nitrogen TKN reaches a maximum of 3791 mg/l, potassium K+ reaches 58.71 mg/l. In addition, the average content of FC and FS are around 5.40 CFU/ml and 5.85 CFU/ml, respectively, whereas total phosphorus reaches 508.25 mg/l. In addition, concentrations of micronutrients such as Cl-, SO42-, Ca2+, Mg2+, and Na+ were high, which is interesting and could benefit for both soils and plant. Furthermore, this sewage sludge contains high concentration of heavy metals, mainly zinc and copper which could limit reuse in land spreading. The obtained results were compared to the applied standards and directives established within the framework of the agricultural spreading.
Źródło:
Journal of Ecological Engineering; 2023, 24, 1; 277--288
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of sewage sludge composition for agricultural use
Charakterystyka składu osadów ściekowych przeznaczonych do celów rolniczych
Autorzy:
Vitenko, Tetiana
Marynenko, Nataliia
Kramar, Iryna
Powiązania:
https://bibliotekanauki.pl/articles/24201151.pdf
Data publikacji:
2023
Wydawca:
Fundacja Ekonomistów Środowiska i Zasobów Naturalnych
Tematy:
sewage sludge
sewage treatment
heavy metals
sludge's physical composition
sludge's chemical composition
osady ściekowe
oczyszczanie ścieków
metale ciężkie
skład fizyczny osadów ściekowych
skład chemiczny osadów ściekowych
Opis:
The article focuses on the research conducted on sewage sludge in Ternopil City, Ukraine, with a specific emphasis on its microelement composition and implications for disposal and utilisation. Bacterial contamination in both old and new sludge storage facilities is revealed by the study. It is found that the sludge holds potential as a fertiliser due to its nutrient content and organic matter, although adjustments may be necessary for specific soil conditions. However, it is determined that the permissible limits for agricultural use are exceeded by heavy metal concentrations, indicating pollution resulting from landfills, old pipes, and intensive agriculture. According to existing regulations, the sludge is considered suitable only for composting. The importance of sludge monitoring, treatment, and management is underscored by the findings, as they are crucial for ensuring safe disposal, mitigating environmental risks, and addressing potential health hazards.
Artykuł koncentruje się na badaniach przeprowadzonych na osadach ściekowych w Tarnopolu na Ukrainie, ze szczególnym naciskiem na ich skład mikroelementowy oraz implikacje dla ich usuwania i wykorzystania. Badanie ujawniło zanieczyszczenie bakteryjne zarówno w starych, jak i nowych obiektach składowania osadów ściekowych. Stwierdzono, że osad ma potencjał jako nawóz ze względu na zawartość składników odżywczych i materii organicznej, chociaż może być konieczne dostosowanie do określonych warunków glebowych. Ustalono jednak, że dopuszczalne limity dla zastosowań rolniczych są przekraczane przez stężenia metali ciężkich, co wskazuje na zanieczyszczenie wynikające ze składowisk odpadów, starych rur i intensywnego rolnictwa. Zgodnie z obowiązującymi przepisami osad jest uważany za odpowiedni tylko do kompostowania. Wyniki badań podkreślają znaczenie monitorowania, przetwarzania i zarządzania osadami ściekowymi, ponieważ mają one kluczowe znaczenie dla zapewnienia bezpiecznej utylizacji, łagodzenia zagrożeń dla środowiska i przeciwdziałania potencjalnym zagrożeniom dla zdrowia.
Źródło:
Ekonomia i Środowisko; 2023, 2; 296--307
0867-8898
Pojawia się w:
Ekonomia i Środowisko
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of Heavy Metals in Bee Honey as a Bioindicator in the Istog, Drenas and Kastriot Regions
Autorzy:
Demaku, Skender
Aliu, Arbnorë
Sylejmani, Donika
Ahmetaj, Blerina
Halili, Jeton
Powiązania:
https://bibliotekanauki.pl/articles/24201705.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
pollution
environment
honey
heavy metals
Opis:
The major goal of this research was to employ honey as a bio-indicator to identify the heavy metal levels in bee honey in the Istog, Drenas, and Kastriot regions. As a result, honey was purposely tested in these locations, and two industrial specific areas were chosen for examination and analysis: Kastriot (Graboc) and Drenas (Vrboc), as these are considered to be among the most industrial polluted areas. A honey sample was also taken in the Istog (Vrell, as a clean area) region in order to compare not just honey, but also the area where the bee obtains nectar, as well as the sources of pollution discharge into the environment. Concentrations of heavy metals in honey, (min. and max.) amounted to: Zn (8.705–9.804 mg/kg), Mn (5.620–5.718 mg/kg), Fe (3.635–3.745 mg/kg) and Cu (2.295–2.299 mg/kg). In contrast, lower concentrations of metals, have been observed for: Ni (0.640–1.126 mg/kg), Pb (0.235–0.268 mg/kg), As (0.107–0.199 mg/kg), Cd (0.040–0.058 mg/kg) and Cr (0.025–0.036 mg/kg) while elements such as; Hg, and Co, are almost undetected. The study of hierarchical clusters revealed several groupings of elements with geogenic and anthropogenic origins. The concentrations of heavy metals selected for honey were compared to standards of other countries, such as Poland and other European Union countries. Samples were taken in October 2020 and September 2021. The concentration of heavy metals was determined using inductively coupled plasma optical emission spectrometry, ICP OES.
Źródło:
Journal of Ecological Engineering; 2023, 24, 5; 191--200
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological assessment of soil contamination with heavy metals due to the application of mineral fertilisers
Autorzy:
Suleimenova, Naziya
Togisbayeva, Ainura
Orynbasarova, Gulnar
Kuandykova, Elnara
Yerekeyeva, Svetlana
Powiązania:
https://bibliotekanauki.pl/articles/2203536.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
application
assessment
cultivation technology
heavy metals
mineral fertilisers
soil ecology
soil pollution
soybean
fertilisers use
yield
Opis:
The article presents the results of monitoring the aftereffect of the use of excessive zonal doses of mineral fertilisers on soil contamination with heavy metals (HM). With traditional soybean cultivation technology, the level of soil contamination when applying excessive doses (N60 P180 K90) of fertilisers is quite high and indicates violations of the ecological balance of the agroecosystem. By the nature of the accumulation of heavy metals in meadow-chestnut soil, depending on the application of the studied doses (P60 K30, N30 P60 K30, N60 P180K90) of fertiliser, the content of HM (Pb, Zn, Cd) increases. The greatest contamination of the soil with Cu was revealed, the content of which increases to 3.2 mg∙kg-1 of soil, which is higher than the threshold of the maximum permissible concentration (MPC) - 3.0 mg∙kg-1. According to the level of contamination of the soil with copper, it belongs to the highly dangerous classes. In a comparative assessment of the level of soil contamination with HM, optimal norms of mineral fertilisers have been established, namely, against the background of effective resource-saving technology for growing soybeans. The application of fertilisers at a dose of P60 K30 and N30 P60 K30 does not significantly affect the level of soil contamination with HM, optimises the ecological state and nutrient regime of the soil, preserves and restores soil fertility indicators, and increases soybean productivity. This resource-saving technology provides a safe environment for soybean cultivation and a significant increase of 34.5-38.6% in crop productivity (0.53-0.76 Mg∙ha-1) and yield (2.57 Mg∙ha-1).
Źródło:
Journal of Water and Land Development; 2023, 56; 74--80
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological risk, seasonal and depth variations of toxic elements in a closed landfill in Vietnamese Mekong Delta province
Autorzy:
Giao, Nguyen T.
Nhien, Huynh T.H.
Powiązania:
https://bibliotekanauki.pl/articles/27312657.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
environmental risk
heavy metals
landfill
soil properties
Opis:
The study was carried out to assess ecological risks at the closed landfill in Cai Dau town, Chau Phu district, An Giang province. Soil samples were collected at six locations (S1-S6) at depths of 0-20 cm and 60-80 cm in the rainy season (November 2020) and dry season (March 2021). The soil quality was evaluated using eight heavy metals (Mn, Fe, Cu, Zn, Ni, Pb, Cr and As). The results showed that most monitoring sites had heavy metal contents within the allowable limits for agricultural land of QCVN 03-MT:2015/BTNMT. Some heavy metals have been found to migrate to the soil layer of 60-80 cm. The heavy metals accumulation (Igeo) in the two soil layers did not differ; Ni, Cr, Pb and As accumulated at non-polluting levels - moderate to high in the rainy season, while Cr and As only accumulated in the dry season. The composite pollution index (PLI) indicated that the locations around the landfill were polluted; however, the ecological risk ranged from low to moderate (potential ecological risk index (PERI) = 102-195) in the rainy season. Only about 50% of study sites during the dry season were contaminated and the risk was low (PERI = 44-68). However, the area around the landfill always poses potential risks due to the presence of heavy metals, including Ni, Cr, As and Pb. Monitoring the heavy metals in the surrounding landfill for the potential risks to human health and environment is needed.
Źródło:
Journal of Water and Land Development; 2023, 57; 188--196
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effectiveness of fly ash on the stabilization/solidification of Zn-contaminated soil
Autorzy:
Chen, Yan
Zhu, Shengyuan
Fang, Wei
Huang, He
Qin, Hao
Hu, Shengtao
Wu, Yuzhao
Powiązania:
https://bibliotekanauki.pl/articles/27323977.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
fly ash
soil
heavy metals
X-ray diffraction
Zn2+
popiół lotny
gleba
metale ciężkie
dyfrakcja rentgenowska
Opis:
As a solid waste, the associated disposal cost of fly ash is really high. Previous studies suggested that the utilization of fly ash to treat heavy metal-contaminated soils was a new cost-effective method of disposal of it. Therefore, the effectiveness of fly ash stabilized/solidified Zn-contaminated soils has been investigated by unconfined compressive strength (UCS) and toxicity characteristics leaching procedure (TCLP) tests. Quantitative analysis of the soil microstructure was conducted by processing the X-ray diffraction (XRD) and scanning electron microscope (SEM) images. Mercury intrusion porosimetry (MIP) was carried out to illustrate the size and proportion of pore size for specimens under different ratios. The results of the tests showed an improvement in the UCS, which further increased as the content of binders was raised. Binder content would have little influence on the development of strength if the binder content exceeds a threshold value. The leached Zn2+ concentration of stabilized specimens was significantly decreased compared to that of untreated. Quantitative analysis confirmed that the addition of the binders resulted in the amount of hydration product, reduction of porosity, and a really random pores orientation, which was responsible for the improvement of the strength and leaching properties of the Zn2+ contaminated soils.
Źródło:
Environment Protection Engineering; 2023, 49, 3; 15--29
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Elemental composition and origin of PM10 in a fire station in Poland. Real-time results from the XRF analysis
Autorzy:
Mach, Tomasz
Rogula-Kozłowska, Wioletta
Bihałowicz, Jan Stefan
Rybak, Justyna
Powiązania:
https://bibliotekanauki.pl/articles/24201037.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
particulate matter
heavy metals
X-ray fluorescence spectrometry
pył zawieszony
metale ciężkie
spektrometria fluorescencyjna
Opis:
This work presents the first results of the metal in particulate matter PM10 analysis and source apportionment in one of the fire station garages in Poland. The study’s novelty includes the high temporal resolution of the elemental composition of PM-bound metals since the gamma-ray fluorescence spectrometer with the high temporal resolution was used in the study. The concentrations of PM10 were measured at the same time using the method of beta-ray attenuation. The concertations of PM10 and PM-bound metals were analyzed with a temporal resolution of 4 h. To identify the source apportionment of metals, three commonly used models were applied: principal component analysis (PCA), EPA UNMIX, and EPA PMF (positive matrix factorization). The concentrations of the investigated metals have high temporal variations while the concentrations of PM10 were low in the garage. The enrichment of PM10 was very high or high, especially in sulfur, zinc, arsenic, nickel, cadmium, and lead. PCA analysis, as well as UNMIX and PMF, showed a high impact of factors related to sulfur on the variability. It showed the impact of combustion, including combustion of liquid fuels, in fire engines may have a crucial impact on air pollution in the fire station. The PMF analysis allowed us also to identify factors responsible for external anthropogenic emissions on concentrations inside the garage. Other identified sources of PM10 and PM10-bound elements are mineral dust, and road dust related to non-exhaust emission, originating inside the firehouse (resuspension and abrasion) as well as from outside.
Źródło:
Environment Protection Engineering; 2023, 49, 1; 57--72
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Environmental Risk Assessment of Heavy Metals in Selected Medicinal Herbs and Spices
Autorzy:
Al-Keriawy, Hussein Aliwy Hassan
Nehaba, Sundus Saleh
Alwan, Saad Wali
Powiązania:
https://bibliotekanauki.pl/articles/24202896.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
heavy metals
medicinal herbs
risk assessment
human health
Opis:
Spices and medicinal herbs is an important route for human exposure to toxic metals. This study determined total concentrations of heavy metals and risk assessment of ten types of herbs used in cooking, spices and medicinal plants available in local markets of Babylon province/Iraq. Concentrations of Cu, Ni, Zn, Pb, Co, As, Cd, Cr and Hg were estimated by ICP/Mass to identify toxic metals in the used portion of selected spices and medicinal plants. The average concentrations of these elements were within the limits allowed by the WHO. Culinary herbs and spices contained significantly Cu˃Ni˃Zn˃Pb˃Co˃As˃Cd˃Cr˃Hg. However, the concentrations of copper, zinc and nickel, respectively, were higher in all herbal samples. The study recorded the highest concentrations in the aerial parts of plants from the total elemental content of Thymus vulgaris leaves (109.4 μg•g-1). and barks of Cinnamomum verum was recorded (43 μg•g-1). Non-carcinogenic risks and estimated daily consumption of these herbs were assessed on the basis of the target hazard quotient (THQ) and Hazard Index (HI). THQ values for individual minerals were more than one indicating health risks for nickel (15.5) Mentha verticillata leaves, (12.3) for Matricaria chamomilla, other metals Cu, Co, Pb and Zn were recorded THQ˃1 which considered unsafe for human consumption. The mean Hazard Index (HI) for the nine metal elements is ˃1 for all plants except Zingiber officinale, indicating that there are non-carcinogenic risks from these nine elements. this study provides a scientific basis to guide the safe consumption of certain culinary herbs and spices, it suggest potential health concerns for consumers of these products on a daily basis over a prolonged life span.
Źródło:
Journal of Ecological Engineering; 2023, 24, 6; 376--384
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of groundwater in aluminium slag disposal area
Autorzy:
Putranto, Thomas Triadi
Febriane, Wenny
Powiązania:
https://bibliotekanauki.pl/articles/27312652.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
aluminium slag waste
geospatial analysis
heavy metals pollution index
multivariate analysis
water quality index
Opis:
Aluminium slag waste is a residue from aluminium recycling activities, classified as hazardous waste so its disposal into the environment without processing can cause environmental problems, including groundwater pollution. There are 90 illegal dumping areas for aluminium slag waste spread in the Sumobito District, Jombang Regency. This study aims to evaluate the quality of shallow groundwater surrounding aluminium slag disposal in the Sumobito District for drinking water. The methods applied an integrated water quality index (WQI) and heavy metal pollution index (HPI), multivariate analysis (principal component analysis (PCA) and hierarchical clustering analysis (HCA)), and geospatial analysis for assessing groundwater quality. The field campaign conducted 40 groundwater samples of the dug wells for measuring the groundwater level and 30 of them were analysed for the chemical contents. The results showed that some locations exceeded the quality standards for total dissolved solids (TDS), electrical conductivity (EC), and Al2+ . The WQI shows that 7% of dug well samples are in poor drinking water condition, 73% are in good condition, and 20% are in excellent condition. The level of heavy metal contamination based on HPI is below the standard limit, but 13.3% of the water samples are classified as high contamination. The multivariate analysis shows that anthropogenic factors and natural sources/geogenic factors contributed to shallow groundwater quality in the study area. The geospatial map shows that the distribution of poor groundwater quality is in the northern area, following the direction of groundwater flow, and is a downstream area of aluminium slag waste contaminants.
Źródło:
Journal of Water and Land Development; 2023, 57; 78--90
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł

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