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Wyświetlanie 1-15 z 46
Tytuł:
Heavy metals in tundra plants of the Bellsund in West Spitsbergen, investigated in the years 1987-1995
Autorzy:
Jóźwik, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/2052450.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctica
Spitsbergen
plants
heavy metals
Źródło:
Polish Polar Research; 2000, 21, 1; 43-54
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy metal accumulation in two peat bogs from southern Poland
Autorzy:
Fiałkiewicz-Kozieł, Barbara
Smieja-Król, Beata
Palowski, Bernard
Powiązania:
https://bibliotekanauki.pl/articles/2026703.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heavy metals
variability
ombrotrophic peat bog
Opis:
The dy namic changes in se lected heavy metal con cen tra tions were an a lyzed in two ombrotrophic peat bogs from south ern Po land: Puoecizna Ma³a (PK) and Puoecizna Krauszowska (PM). The high est con tents of Pb and Zn oc cur at the top of pro files ex am ined: 115.36 mg/kg (PM1), 90.61 mg/kg (PM2), 182.40 mg/kg (PK1), 121.68 mg/kg (PK2) and 127.43 mg/kg (PM1), 89.73 mg/kg (PM2), 170 mg/kg (PK1), 130.4 mg/kg (PK2), re spec tively. Con cen tra tions of cop - per are sim i lar to those of lo cal soils vary ing from 9.4 to 12.8 mg/kg. Cad mium strongly var ies with depth, which in di - cates dis tinct mo bil ity of this el e ment. Two peaks of el e vated Fe con cen tra tions are ob served at the top and bot tom of the Puoecizna Ma³a pro file, while the max i mum in Puoecizna Krauszowska was at the top of the peat bog. The Ti con tent dis tinctly var ies with depth and cor re lates with the ash con tent (R2 = 0.91–0.99). The stron gest and pos i tive cor re la tion is ob served be tween Zn-Pb and Ti-Pb con tents. The sig nif i cant dif fer ences of metal con cen tra tions are noted be tween the pro files, which is prob a bly con nected with a rate of peat ac cu mu la tion and plant com po si tion of the pro files in ves - ti gated, as well as with their dis tur bance by hu man ac tiv ity.
Źródło:
Studia Quaternaria; 2011, 28; 17-24
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the process of adsorption of heavy metals in coastal sands containing micro-plastics, with special attention to the effect of aging process and bacterial spread in micro-plastics
Autorzy:
Seyfi, Sara
Katibeh, Homayoun
Heshami, Monireh
Powiązania:
https://bibliotekanauki.pl/articles/2073767.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
adsorption
aging
heavy metals
Erythrobacter
microplastics
Opis:
The chief purpose of this study is to investigate the process of adsorption of heavy metals in sands containing microplastics due to aging and bacterial culture. For this purpose, first, the experiment’s conditions were determined by reviewing previous studies and examining the effects of factors on the duration of bacterial culture and UV radiation. Finally, the test conditions were determined as follows: 25 g of adsorbent in 250 ml solution containing 50 mg/l of lead, cadmium, copper, zinc, chromium, and nickel, 750 micrograms of microplastic, bacterial culture time two days, aging time with UV light 14 days. Results of the study show that the addition of virgin microplastics has little effected on increasing the adsorbent strength, except in the case of nickel which reduces adsorption strength. The aging process increases the absorption of all studied metals by up to 60%. Bacterial culture without an aging process reduces the absorption of nickel and cadmium. Simultaneous use of bacterial culture and aging increases the adsorption power by up to 80% for all metals.
Źródło:
Archives of Environmental Protection; 2021, 47, 3; 50--59
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of cobalt ions on growth and enzymatic activity of entomopathogenic fungi used in biological plant protection
Autorzy:
Łopusiewicz, Ł.
Mazurkiewicz-Zapałowicz, K.
Tkaczuk, C.
Bartkowiak, A.
Powiązania:
https://bibliotekanauki.pl/articles/2084794.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cobalt
entomopathogenic fungi
enzymatic activity
heavy metals
Opis:
This study focused on the effect of heavy metal cobalt ions (at concentrations of 1–1000 ppm) on the development and enzymatic activity of four entomopathogenic fungi: Beauveria bassiana, Beauveria brongniartii, Isaria fumosorosea and Metarhizium robertsii, commonly used in biological plant protection. It was found that each of the tested species of fungi reacted individually to contact with the Co2+ ions at their various concentrations. Depending on the variants of the experiment carried out, there were changes in the development of the mycelia (mainly growth inhibition) and their morphological features (color and structure) in comparison to the control samples. Co2+ ions had a fungistatic effect on all fungal strains, whereas a fungicidal effect was noted at concentrations of 750 ppm and 1000 ppm against M. robertsii and I. fumosorosea, respectively. In addition, there was a discrepancy in enzymatic activity between the tested fungal species developing in the medium with varying concentrations of metal salt. The inhibitory effect of Co2+ ions on lipase production was observed in I. fumosorosea. Protease production was stimulated in B. bassiana at all Co2+ concentrations, whereas in M. robertsii this effect was noted at 1 ppm. The changing dynamics of extracellular fungal hydrolases, due to the action of Co2+ ions, may translate into the role of these microorganisms in the processes of insect pathogenesis. This work suggests that severe pollution of the environment by cobalt could be a restrictive factor for the development and pathogenicity of entomopathogenic fungi and must be taken into account for their successful application in biological plant protection.
Źródło:
Journal of Plant Protection Research; 2020, 60, 1; 58-67
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lipid production and heavy metals adsorption by an Aspergillus fumigatus GAH1 isolate
Autorzy:
Haddad, A.M.
El-Shall, H.S.
Abu-Elreesh, G.
Powiązania:
https://bibliotekanauki.pl/articles/2096970.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lipids
biodiesel
fungi
Aspergillus
bioremediation
heavy metals
Opis:
Few species of filamentous fungi can accumulate considerable amounts of intracellular lipids when grown under certain stress conditions; thus, they can be used for biodiesel production. Moreover, their residual biomass can be used for the removal of heavy metals from contaminated water. An oleaginous Aspergillus fumigatus GAH1 isolate was isolated from a soil sample in Borg El-Arab industrial area, Alexandria, Egypt, and was characterized in batch cultures. The influence of different carbon and nitrogen sources and the initial pH of the medium on the fungal biomass and lipid production was investigated. Under optimized conditions, the A. fumigatus GAH1 isolate could accumulate up to 22.4% of its dry biomass as lipids. Oleic and palmitic acids were the dominant fatty acid fractions produced. After lipid extraction, to further improve the process economy, the fungal biomass was applied as a biosorbent to remove heavy metals such as Cr, Cd, and Zn from contaminated wastewater. The biosorption efficiency and capacity of the raw, H2O-washed, and NaOH-treated fungal biomass were examined. The biosorption capacity of 33.37, 29.29, and 27.75 mg/g was recorded for Cr, Cd, and Zn, respectively. Moreover, the biosorption efficiency was more than 69% for the tested heavy metals. In conclusion, A. fumigatus GAH1 may be considered as a promising biodiesel producer, and its biomass waste can be further used for the biosorption of heavy metals from contaminated wastewater.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2020, 101, 1; 15-24
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Temporal isolation between two strongly differentiated stocks of the Greenland halibut ( Reinhardtius hippoglossoides Walbaum, 1792) from the Western Barents Sea
Autorzy:
Wojtasik, Barbara
Kijewska, Agnieszka
Mioduchowska, Monika
Mikuła, Barbara
Sell, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/2041759.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
allozymes
discrete stocks
genetic diversity
heavy metals
Źródło:
Polish Polar Research; 2021, 42, 2; 117-138
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physico-Chemical Parameters Determining the Variability of Actually and Potentially Available Fractions of Heavy Metals in Fluvial Sediments of the Middle Odra River
Autorzy:
Ibragimow, A.
Walna, B.
Siepak, M.
Powiązania:
https://bibliotekanauki.pl/articles/204885.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heavy metals
available fractions
single extraction
Odra River
Opis:
The occurrence of heavy metals (Cd, Cr, Cu, Ni, Pb, Zn) has been determined in the fluvial sediment samples collected along three transects in the Middle Odra River (western Poland) with a width of 360 m. The total concentrations of the metals were obtained after HNO3 microwave digestion and the available fractions of heavy metals were determined by single extraction procedures using two extractants: 0.01M CaCl2 and 0.05M EDTA. The measurement of physico-chemical parameters was also performed. The determination of total and available fractions of heavy metals, except potential available fractions of Cr, revealed high concentrations of studied elements detected in the sediment samples characterized by high content of coarse and very coarse-grained sand fraction and high content of organic matter. It was found that the concentrations of total and available fractions of metals could increase along with the content of organic matter, Eh values and concentrations of H+. Apart from the above, those concentrations become the lowest, the higher the content of medium grain size fractions is. Furthermore, the amounts of CaCl2 and EDTA extractable metals increase in the sediments samples characterized by the lowest total and available concentrations of heavy metals.
Źródło:
Archives of Environmental Protection; 2013, 39, 2; 3-16
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The content of heavy metal ions in ash from waste incinerated in domestic furnaces
Autorzy:
Poluszyńska, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/205178.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heavy metals
wastes
ICP-MS
ash from waste
Opis:
The article presents the results of preliminary tests obtained from the analysis of ash coming from the combustion of various types of waste in household furnaces. The aim of this work was to examine the influence of various types of waste burned in household furnaces on the elemental composition of the generated ash. As part of the research, analyses of ash generated from the incineration of mixed waste, plastics, wood, textiles, rubber waste and paper were made. The content of selected metal ions: Mn, Cu, Mo, Zn, Cd, Tl, Cr, Co, Ni, As, Sn, Sb, Pb, V was determined in the tested samples, according to PN-EN ISO 17294-2: 2016-11 standard. The highest concentrations of zinc were found in the large-sized waste, rubber and textile ash samples and highest concentrations of copper were found in the plastic and paper ash samples. The highest concentrations for elements such as copper, lead, cobalt and chromium were recorded for samples of rubber and large-sized waste containing e.g. varnished furniture boards. The obtained results showed that depending on the waste incinerated, the content of selected metals was significantly different, and the highest concentrations were noted for samples of large-sized waste, waste from segregated plastics and waste from rubbers.
Źródło:
Archives of Environmental Protection; 2020, 46, 2; 68-73
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The value of the terricolous lichen Cetrariella delisei in the biomonitoring of heavy−metal levels in Svalbard
Autorzy:
Węgrzyn, Michał
Lisowska, Maja
Nicia, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/2051380.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
lichenized fungi
heavy metals
air pollution monitoring
Źródło:
Polish Polar Research; 2013, 4; 375-382
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the soil quality in the vicinity of Inowrocław soda plants
Autorzy:
Wiatrowska, K. M.
Komisarek, J.
Marcinek, J.
Kozłowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/204779.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heavy metals
soil salinity
dehydrogenases activity
soil quality activity
Opis:
The aims of this study were to assess the quality of soils affected by strongly saline waste products and to analyze the spatial distribution pattern of soil properties influenced by a soda plant. Soil samples were analyzed for electrical conductivity (EC), sodium adsorption ratio (SAR), pH, trace element content and dehydrogenases activity. The research was conducted in the vicinity of the waste ponds of the Ciech Soda Poland S.A. company (Central Poland), where 35 groundwaters, 63 surface (0–20 cm) and 60 subsurface (80–100 cm) samples were collected. Although the waste ponds are currently not used for regular disposal of waste products, a high level of salinity of groundwater and soil, especially in the subsurface layer, is still being observed. The electrical conductivity of soil saturation extract (ECse) values varied between 0.9–15.4 and 1.0–87.2 dS·m-1 for surface and subsurface layer, respectively. Analysis of the spatial distribution of soil salinity reveals a correlation with microrelief and groundwater levels. Maps of the spatial distribution of heavy metals showed that their content in the subsurface layer was a result of chemical migration from the waste ponds, and in the surface layer by other sources (atmospheric deposition). The soil salinity did not influence dehydrogenases activity.
Źródło:
Archives of Environmental Protection; 2018, 44, 3; 58-67
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metal resistance and uptake by Trichosporon asahii and Pichia kudriavzevii isolated from industrial effluents
Autorzy:
Ilyas, S.
Rehman, A.
Powiązania:
https://bibliotekanauki.pl/articles/204832.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Trichosporon asahii
Pichia kudriavzevii
heavy metals
oxidative stress
bioaccumulation
Opis:
Metal-resistant yeast strains, Trichosporon asahii and Pichia kudriavzevii, were grown-well onto YPD medium at 37°C (pH 6) and 30°C (pH 7), respectively. Tolerance values determined in T. asahii were 35 mM (Pb), 33 mM (Cu), 30 mM (As) and 10 mM (Cd) while P. kudriavzevii resisted up to 31 mM (Pb), 27 mM (Cu), 15 mM (Cd) and 12 mM (As). Yeasts grown in Minimal Salt Medium (MSM) were treated separately with metal challenge (100 mg/L) for 2 days. T. asahii showed elevated glutathione (GSH) level with Cd (83.06), As (81.87), Pb (66.88) and Cu (56.19) mM/g which was 70 (Cu), 69.87 (Pb), 56.47 (As) and 52.76 (Cd) in P. kudriavzevii as compared to the control. The glutathione (GSH): glutathione disulfi de (GSSG) ratio was decreased with all treated heavy-metals except Cd in T. asahii and increased with Cu and Pb in P. kudriavzevii. T. asahii could remove 78% (Cd), 72% (As), 85% (Cu) and 94.5% (Pb) from the medium after 12 days while was able to uptake 44.8, 41, 62 and 72 mg/g Cd, As, Cu and Pb, respectively. Likewise, P. kudriavzevii was able to remove 61% (Cd), 62% (As), 61% (Cu) and 87% (Pb) after 12 days of incubation and also showed capacity to uptake 36.8, 48, 40 and 57 mg/g Cd, As, Cu and Pb, respectively. Total protein profi ling of yeasts revealed marked differences in banding pattern due to increased oxidation under metal stressed conditions. High metal uptake ability makes T. asahii and P. kudriavzevii potential candidates to remove metals from the environment.
Źródło:
Archives of Environmental Protection; 2018, 44, 3; 77-84
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial distribution, environmental risk and source of heavy metals in street dust from an industrial city in semi-arid area of China
Autorzy:
Han, X.
Lu, X.
Powiązania:
https://bibliotekanauki.pl/articles/204586.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heavy metals
spatial distribution
source
risk assessment
industrial city
dust
Opis:
Environmental risks associated with Co, Cr, Cu, Mn, Ni, Pb, V and Zn in street dust collected from Baotou, a medium-sized industrial city in a semi-arid area of northwest China, were assessed by using enrichment factor and the potential ecological index. Their spatial distributions and sources in the dust were analyzed on the basis of geostatistical methods and multivariate statistical analysis, respectively. The results indicate that street dust in Baotou has elevated heavy metal concentrations, especially of Co, Cr, Cu, Pb and Zn. Co in the dust was significantly enriched. Cr and Pb were from moderate to significant enrichment. Cu and Zn were from minimal to moderate enrichment, whereas Mn, Ni and V in the dust were from deficient to minimal enrichment. The ecological risk levels of Co and Pb in the dust were moderate to considerable and low to moderate, respectively, whereas those of other heavy metals studied in the dust presented low ecological risk. Different distribution patterns were found among the analyzed heavy metals. Three main sources of these heavy metals were identified. Cr, Mn, Ni and V originated from nature and industrial activities. Cu, Pb and Zn derived mainly from traffic sources, and Co was mainly from construction sources.
Źródło:
Archives of Environmental Protection; 2017, 43, 2; 10-19
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of acid buffering capacity on the remobilization of heavy metals in sewage sludge barrier for tailings
Autorzy:
Chen, Y.
Zhang, H.
Ju, Y.
Powiązania:
https://bibliotekanauki.pl/articles/205048.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sewage sludge
heavy metals
acid mine drainage
acid buffering capacity
remobilization
Opis:
Remobilization of heavy metals from the bottom liner system due to the seepage of acid mine drainage (AMD) is an important concern in the long-term management of tailing impoundment. Titration tests were carried out to evaluate the acid buffering capacity (ABC) of sewage sludge and to investigate its effect on the remobilization of heavy metals. Test results demonstrate that the ABC increases with solid/liquid ratio and anaerobic incubation time and it is mainly attributed to the abundant organic matters contained and increasing carbonate loads. The added heavy metals (Zn, Pb, and Cu) were well immobilized during the anaerobic incubation stage but were released out dramatically during the acidification especially when pH drops below 6.0 because of dissolution of carbonates and cation exchange of clay minerals. The calculated results, from a simplified model, indicate that high levels of remobilization of heavy metals are not expected during the typical management time because of the high ABC of compacted sewage sludge barrier. These results support that sewage sludge is a suitable bottom liner material for the management of AMD from tailings.
Źródło:
Archives of Environmental Protection; 2018, 44, 2; 62-72
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy metals and polycyclic aromatic hydrocarbons in leachates from autothermal thermophilic aerobic digestion as a potential threat to the environment in north-eastern Poland
Autorzy:
Boruszko, Dariusz
Wojciula, Ada
Powiązania:
https://bibliotekanauki.pl/articles/2141490.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heavy metals
biodegradation
polycyclic aromatic hydrocarbons
leachates
autothermal thermophilic aerobic digestion
Opis:
This paper presents the concentrations of the polycyclic aromatic hydrocarbons (PAH) and heavy metals in leachates from the autothermal thermophilic aerobic digestion (ATAD). The leachates from ATAD installations (Dąbrowa Białostocka, Hajnówka, Pisz, Olecko, Giżycko, Wysokie Mazowieckie) located in Poland were tested. The concentrations of PAHs in samples from Pisz, Giżycko, Wysokie Mazowieckie and Hajnówka were similar to those in industrial wastewater. The cluster analysis confirmed that in sites with a higher polyethylene (p.e.) input from the industrial sector, the leachates were more contaminated with PAH compounds. In samples from Dąbrowa Białostocka, Olecko, Pisz and Hajnówka, the heavy fraction of PAHs compounds prevailed over the light fraction. Concentrations of heavy metals in leachates from ATAD varied. The Ward’s method isolated the wastewater treatment plant in Giżycko. The p.e. from the industrial sector was the highest for this facility. Also, the samples from ATAD had the highest total concentration of heavy metals (5.87 mg/l). The leachates from ATAD are returned to biological systems of municipal sewage treatment plants, where they can be combined into more toxic compounds. Biological wastewater treatment processes do not ensure the removal of PAHs and heavy metals from the wastewater. As a result, harmful compounds can get into the water or ground, polluting the environment.
Źródło:
Studia Quaternaria; 2022, 39, 1; 15-22
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 46

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