Temat: sea water - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Water Quality and Radionuclides Content Assessment of the Al-Najaf Sea: Case Study
Autorzy:: Zwain, Haider M.
Almurshedi, Kareem Radhi
Vakili, Mohammadtaghi
Dahlan, Irvan
Naje, Ahmed Samir
Powiązania:: https://bibliotekanauki.pl/articles/1839100.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: irrigation water
water quality assessment
salinity
sodicity
radionuclide
Al-Najaf Sea
Opis:: The Al-Najaf state is witnessing an increased economic development and attracting more investments that require the development of new areas and exploring new water resources. This study evaluates the quality of 12 surface water samples and groundwater from 12 wells for irrigation according to the salinity and sodicity hazards based on electrical conductivity (EC) and sodium adsorption ratio (SAR). In addition, the concentrations of radionuclides, which include Thorium (232Th), Uranium (238U), Potassium (40K) and Cesium (137Cs) were tested in four soil samples in the study area. It was found that the average values of pH, total hardness, Na, Ca, Mg, K, Cl, SO4, NO3 for groundwater and surface water were 8 and 6, 2287 and 4006 mg/L, 1140 and 1232 mg/L, 378 and 637 mg/L, 327 and 587 mg/L, 2 and 2 mg/L, 989 and 2007 mg/L, 1149 and 1325 mg/L, as well as 2 and 2 mg/L, respectively. From salinity and sodicity hazards analysis, the groundwater had EC of 5242 µS/cm and SAR of 61, whereas surface water had EC of 6253 µS/cm and SAR of 50. Furthermore, the concentrations of radionuclides, i.e. 232Th, 238U, 40K and 137Cs in the soil samples were found to be 11.02, 34.12, 544.45, and 1.6 Bq/kg, respectively. The concentrations of radionuclides were within the worldwide baseline, expect for 40K. The study concluded that both water sources are classified as very high salinity and sodium water (class C4-S4), and it cannot be used for irrigation, only suitable for the salt tolerant crops.
Źródło:: Journal of Ecological Engineering; 2021, 22, 2; 262-271
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Assessment of the Black Sea Ecosystem Pollution With Copper and Cadmium In Selected Bays of Sevastopol Region
Autorzy:: Niemiec, M.
Wiśniowska-Kielian, B.
Arasimowicz, M.
Kuzminowa, N.
Powiązania:: https://bibliotekanauki.pl/articles/124142.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: Black Sea
pollution
water
algae
copper
cadmium
monitoring
bioaccumulation
Opis:: A high level of anthropopressure has been registered in Sevastopol region, connected with its strategic role as the main city in the region, but also due to Russian Black Sea Fleet stationing there for many years. A significant source of the Black Sea contamination in Sevastopol area is the industry located in this city, municipal waste and agriculture. Implementing measures aimed at protection of the Black Sea and the evolution of their results requires monitoring conducted in the regions with various levels of anthropopressure. The work was aimed at the assessment of copper and cadmium content in water and algae in selected bays of the Black Sea in the vicinity of Sevastopol. Samples of water and algae were collected in August 2012 from eight Sevastopol bays (Galubaja, Kozacha, Kamyshova, Kruhla, Strieletska, Pishchana, Pivdenna and Sevastopolska) and from the open sea in the vicinity of Fiolent. Algae (Cystoseira barbata and Ulva rigida) were collected from the same places. Collected water was preserved on the sampling place and brought to the laboratory where its copper and cadmium concentrations were assessed. Collected algae were rinsed in distilled water, dried, then homogenised and mineralised. Copper and cadmium content were determined in the mineralizates using ASA method with electrothermal atomisation. Cadmium concentration in water ranged from 0.13 to 1.74 μg Cd dm ^-3, and copper from 7.07 to 22.56 μg Cd dm,^-3. Considerable differences in the content of the analysed elements were registered in individual bays. The highest content was assessed in Galubaja and Sevastopolska bays, whereas the lowest one in the water collected in the open sea and in Pivdenna bay. Copper concentrations in the analysed algae fluctuated from 3.375 to 14.96 mg Cu kg ^-1 d.m. No differences were noted in this element content between the algae species. Cadmium content in the algae ranged from 0.133 to 1.133 mg Cd kg^-3 d.m. Higher accumulation of cadmium was observed in Cystoseira barbata than in Ulva rigida. The value of copper bioaccumulation coefficient (BC) ranged from 181 to 1201, whereas cadmium from 181 to 5256. The contents of the analysed metals, both in biotic and abiotic elements of the studied ecosystems point to anthropogenic enrichment and the results obtained for Sevastopolska, Galubaja and Kozacha bays indicate a hazardous, excessive bioaccumulation of copper and cadmium and to potential threat to the life of aquatic organisms and seafood consumers.
Źródło:: Journal of Ecological Engineering; 2015, 16, 5; 119-127
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The Wastewater Disposal System Modernization during Processing of Amber Deposit as a Way to Reduce the Anthropogenic Load on the Baltic Sea Ecosystem
Autorzy:: Strizhenok, Alexey V.
Korelskiy, Denis S.
Kuznetsov, Vladimir S.
Powiązania:: https://bibliotekanauki.pl/articles/123796.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: wastewater discharge
pollution
environmental monitoring
Baltic Sea
ecosystem
tailing dump
amber-succinite
recycled water supply
Opis:: The research is devoted to assessing the negative impact of the amber-succinite deposit in the Kaliningrad region as one of the sources of complex pollution of the Baltic Sea waters. The Baltic Sea is one of the most polluted water bodies in Europe today. There are many natural and anthropogenic factors that cause this ecological situation. Industry is one of the significant contributors to the pollution of the waters of the Baltic Sea. The industrial wastewater discharged into the Baltic Sea often does not comply with the state ecological standards. The wastewater disposal system modernization by creating a recycled water supply is one of the most effective ways to reduce the negative impact of industrial wastewater on the Baltic Sea ecosystem nowadays. This technological solution allows to significantly reduce or to completely prevent the discharge of wastewater into the Baltic Sea.
Źródło:: Journal of Ecological Engineering; 2019, 20, 3; 30-35
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Linia wody – szczególne miejsce arenalu południowego Bałtyku dla wolnożyjących nicieni
Water line – a special place of the Southern Baltic Sea for free-living nematodes
Autorzy:: Taberska, A.
Rokicka-Praxmajer, J.
Powiązania:: https://bibliotekanauki.pl/articles/399855.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: nematofauna
bioróżnorodność
grupy troficzne
linia wody
arenal
Bałtyk
biodiversity
trophic group
water lines
beach
Baltic Sea
Opis:: Praca przedstawia charakterystykę strukturalną i funkcjonalną zespołów nematofauny, zasiedlających osady na linii wody w południowym Bałtyku. Wolnożyjące nicienie oznaczono do rodzaju oraz określono ich strukturę troficzną. Zagęszczenie nematofauny na badanych stanowiskach wahało się od 10,52 ± 9,82 osob./10 cm² do 124,49 ± 76,39 osob./10 cm². Najliczniej występowały nicienie z rodzaju Ascolaimus, stanowiąc od ok. 45% do 74% całkowitej liczebności nematofauny. Łącznie w okresie badań stwierdzono nematofaunę należącą do 7 rodzajów. Za zasadniczy element nematofauny zasiedlającej osady na linii wody uznano nicienie z rodzajów: Ascolaimus, Axonolaimus, Enoplolaimus i Daptonema. Pod względem funkcjonalnym dominowali nieselektywni osadożercy, osobniki z nieuzbrojoną torebką gębową, reprezentowane przez nicienie z rodzajów: Ascolaimus, Axonolaimus, Theristus i Daptonema.
This paper presents the structural and functional characteristics of nematofauna assemblages inhabiting the sediments along the water line in the southern Baltic Sea. The nematodes were identified to the genus level and assigned to appropriate trophic group. The density of free-living nematoda varied from 10.52 ± 9.82 ind./10 cm² to 124.49 ± 76.39 ind./10 cm². Ascolaimus was the most abundantly represented genus, accounting for from 45% to 74% of the total number of nematofauna. A total of 7 nematode genera were identified. Ascolaimus, Axonolaimus, Enoplolaimus and Daptonema were considered essential elements of nematofauna. In terms of functionality, non-selective deposit feeders were predominant, individuals with unarmed buccal cavity, represented by nematodes of the genera Ascolaimus, Axonolaimus, Theristus and Daptonema.
Źródło:: Inżynieria Ekologiczna; 2018, 19, 1; 9-18
2081-139X
2392-0629
Pojawia się w:: Inżynieria Ekologiczna
Dostawca treści:: Biblioteka Nauki

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