INTEGRAL ASSESSMENT OF THE WATER QUALITY OF THE MARKAKOL LAKE IN KAZAKHSTAN PART OF WESTERN ALTAI

NEWS of National Academy of Sciences of the Republic of Kazakhstan, Journal Year: 2024, Volume and Issue: 3(465), P. 119 - 132

Published: June 15, 2024

The quality and depth of content Web Science offers to researchers, authors, publishers, institutions sets it apart from other research databases. inclusion News NAS RK. Series geology technical sciences in the Emerging SourcesCitation Index demonstrates our dedication providing most relevant influential engineering community. Қазақстан Республикасы Ұлттық ғылым академиясы «ҚР ҰҒА Хабарлары

Language: Английский

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Land-Use Pattern-Based Spatial Variation of Physicochemical Parameters and Efficacy of Safe Drinking Water Supply along the Mahaweli River, Sri Lanka

Water, Journal Year: 2024, Volume and Issue: 16(18), P. 2644 - 2644

Published: Sept. 18, 2024

Exploration of the pollution status river-based water sources is important to ensure quality and safe drinking supply for public. The present study investigated physicochemical parameters surface in upper segment River Mahaweli, which provides Nuwara Eliya Kandy districts Sri Lanka. from 15 intakes treated 14 Water Treatment Plants (WTPs) were tested pH, temperature, turbidity, EC, COD, 6 anions, 21 cations, 3 pesticides, 30 antibiotics once every months June 2022 July 2023. Except turbidity iron concentrations, all other within permissible range as per Lanka Standard Specification Potable (SLS 614:2013). uppermost Kotagala WTP raw had a high concentration due runoff areas with abundant iron-bearing minerals. Turbidity increased river flowed downstream, reaching its highest value 13.43 NTU at lowermost Haragama. Four suitable Quality Index (WQI). Pollution gradually towards downstream mainly agricultural runoff, industrial effluents, urbanization. Poor upstream Thalawakale-Nanuoya intake was highly contaminated effluent coming Lake Gregory Eliya. Cluster analysis categorized locations into clusters low, moderate, based on contaminations. Principal component revealed that significance 41.56% variance pH presence heavy metals V, Cr, Ni, Rb, Co, Sr, As. All WTPs very good excellent quality. In general, metal contamination low indicated by index (HPI) evaluation (HEI). treatment process could remove up 94.7% turbidity. This first attempt cluster catchment Mahaweli water. We here land-use pattern-based efficacy using Basin case study. Regular monitoring adjustments identified points are recommended maintain delivery

Language: Английский

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Unveiling concentrations of trace elements in the Lower Indus River: risks to aquatic life and human health

Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 11

Published: Dec. 17, 2024

Concentration of trace elements (CTEs) is a significant environmental concern worldwide. This study assessed CTE levels in the Lower Indus River (LIR) by analyzing CTEs water, sediments, tissues fish ( Cirrhinus mrigala ), and macrophytes using electrothermal atomic absorption spectrometry (ETAAS) flame (FAAS). The shows that range—arsenic (As, 58.7–112.1 μg/L), lead (Pb, 59.9–95.6 cadmium (Cd, 3.8–8.1 nickel (Ni, 40.9–63.4 zinc (Zn, 590.7–847.6 μg/L)—and water parameters (temperature, pH, COD, BOD, turbidity, alkalinity) exceeded WHO (World Health Organization) acceptable limits. (mg/kg dried basis) were analyzed tissues, As, Cd, Cr, Cu, Hg, Ni, Zn have following accumulation order: liver > gill muscle. In contrast, Ag Pb present higher amounts gills than (gill muscle). Prediction bioavailability CTEs, with extraction sediment load EDTA, revealed among most bioavailable LIR. risk assessment indicated presence could pose potential adverse health effects on humans. emphasizes ecological concerns due to consumption affected region, noting high risks non-carcinogenic effects. These insights are essential for policymakers stakeholders Sindh Province manage reduce element pollution.

Language: Английский

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Human health risk assessment of drinking water using heavy metal pollution index: a GIS-based investigation in mega city

Applied Water Science, Journal Year: 2024, Volume and Issue: 15(1)

Published: Dec. 28, 2024

Contaminated drinking water poses a significant threat to public health, particularly in urban areas where industrial and environmental pollutants may affect quality. However, there is lack of comprehensive studies that evaluate the specific health risks associated with harmful metal contaminants water. This study seeks address this gap by assessing quality contamination using pollution indices human risk assessments. The findings will help identify potential for residents guide development targeted interventions improved management strategies. groundwater samples were collected from five different zones Kasur rural area. A total 25 random sampling hand pumps during 4 months (March–June, 2021) determining various physiochemical attributes (pH, electric conductivity, turbidity, hardness, chloride, phosphate) potentially toxic elements (arsenic, cadmium, lead) standard protocols. Results revealed almost all physicochemical close World Health Organization (WHO) guidelines. assessment pH levels ranged 7.4 9.0, electrical conductivity (EC) between 150 µS/cm 800 µS/cm, average turbidity 12 ± 3.29 NTU, hardness varied 200 1000 mg/L. Chloride phosphate concentrations averaged 304 1.28 mg/L 4.51 1.99 mg/L, respectively. Cadmium 0.15 0.53 while lead arsenic reached up 7.47 exceeding WHO Heavy index (HPI) values sites less than critical value 100. considering HPI classes, locations had high (> 30) class indicating critically polluted heavy metals. Through exposure water, metals impact on non-carcinogenic (HI > 1), according hazard determined analysis children, infants, adults. As compared carcinogenic values, posed adults children infants as mean CR adults, 1.48E + 00, 1.40E 7.60E-01, It suggested supplies, need installation treatment plants minimize issues.

Language: Английский

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Enhancing urban water efficiency through digital financial inclusion: Evidence from China

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 434, P. 140246 - 140246

Published: Dec. 16, 2023

Language: Английский

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