Your search found 4 records
1 Easter, K. W.; Konishi, Y. 2006. What are the economic health costs of non-action in controlling toxic water pollution? International Journal of Water Resources Development, 22(4):529-541.
Water pollution ; Pollution control ; Drinking water ; Public health ; Diseases ; Risks ; Arsenic ; Mercury ; Atrazine ; Toxicity ; Fish / USA / Japan / India
(Location: IWMI-HQ Call no: PER Record No: H039471)
2 Jinadasa, B. K. K. K. 2013. A study of trace metal levels in selected fisheries harbours in South and West coast of Sri Lanka. Journal of the National Aquatic Resources Research and Development Agency of Sri Lanka, 42:1-14.
Heavy metals ; Fisheries ; Water pollution ; Harbours ; Coastal area ; Sea water ; Mercury ; Cadmium ; Lead ; Chromium ; Nickel ; Copper ; Zinc / Sri Lanka / Tangalle / Puranawella / Mirissa / Beruwala / Mutwal / Negombo
(Location: IWMI HQ Call no: P 8157 Record No: H047150)
(1.07 MB)
Trace metals generally enter into the harbour environment through atmospheric deposition, erosion or due to anthropogenic activities such as release of industrial effluents, domestic and harbour generated sewage and oil spills. The present study was carried out to assess the levels of several trace metals, namely, Hg, Pb, Cd, Cr, Zn, Cu and Ni, in harbour basin water from six selected fisheries harbours along the Southern and Western coasts of Sri Lanka. A total of 54 samples were collected covering the areas around the harbour jetty, harbour entrance and fuel stations during the period of June to December, 2011. The level of total Hg was analyzed by cold vapour atomic absorption spectrometry (CV-AAS) and the other metals by graphite furnace atomic absorption spectrometry (GF-AAS). The trace metal concentrations in fisheries harbour basin water (n=54) varied widely. The mean concentrations ±SD (µg/L) found in the study were Hg <0.16, Pb 0.40±0.61, Cd 0.06±0.17, Cr 0.49±0.80, Zn 13.60±19.1O, Cu 4.68±8.99 and Ni 5.80± 7.98. These values are all well below the limits for estuary and harbour basin water guideline, set by European Union (EU) and the Food and Agriculture Organization (FAO).
3 Brindha, Karthikeyan; Pavelic, Paul; Sotoukee, Touleelor; Douangsavanh, Somphasith; Elango, L. 2017. Geochemical characteristics and groundwater quality in the Vientiane Plain, Laos. Exposure and Health, 9(2):89-104. [doi: https://doi.org/10.1007/s12403-016-0224-8]
Geology ; Chemical composition ; Toxicity ; Groundwater ; Water quality ; Water level ; Drinking water ; Domestic water ; Irrigation water ; Aquifers ; Plains ; Heavy metals ; Pollutants ; Iron ; Arsenic ; Copper ; Zinc ; Mercury ; Health hazards / Lao People's Democratic Republic / Vientiane Plain
(Location: IWMI HQ Call no: e-copy only Record No: H047651)
Groundwater from the shallow aquifers of the Vientiane Plain, Laos is used for domestic needs including to some extent for drinking and for household gardening. The objective of this study is to assess the groundwater quality for drinking and irrigation activities and to determine the processes that lead to the presence of major ions in groundwater. Twenty groundwater samples were collected from a village on the Plain in December 2014, January 2015, and May 2015, and analysed for major ions and selected suite of minor ions and heavy metals. Groundwater is largely acidic, fresh and soft in nature. Geochemistry showed dominant Ca–Mg–HCO3 and mixed Ca–Na–HCO3 groundwater. Sodium impacts the suitability of water for irrigation to some extent. Hydrogeochemical processes identified and verified through factor analysis indicate weathering, carbonate dissolution, ion exchange, and anthropogenic sources including salinisation, due to irrigation and use of fertilizers as sources for the occurrence of major ions at such concentrations in this area. Only concentrations of lead and iron were above the permissible limits with arsenic, copper, zinc, mercury, and uranium found to be within safe limits. Background sample (groundwater) collected 5 km from the study area and the bottled water sample were all within suitable limits for drinking. This study is the first to provide a local-level assessment of geochemical processes in groundwater of this area indicating that the groundwater does not pose any threat to human health if used for drinking based on major ions, minor ions and a suite heavy metals except for iron and lead.
4 Bilal, H.; Li, X.; Iqbal, Muhammad Shahid; Mu, Y.; Tulcan, R. X. S.; Ghufran, M. A. 2023. Surface water quality, public health, and ecological risks in Bangladesh—a systematic review and meta-analysis over the last two decades. Environmental Science and Pollution Research, 30(40):91710-91728. [doi: https://doi.org/10.1007/s11356-023-28879-x]
Surface water ; Water quality ; Public health ; Risk assessment ; Health hazards ; Water pollution ; Ecological factors ; Physicochemical properties ; Hydrochemistry ; Cations ; Anions ; Heavy metals ; Arsenic ; Cadmium ; Chromium ; Mercury ; Lead ; Biological contamination ; Faecal coliforms ; Cryptosporidium ; Drinking water ; Rivers ; Water management ; Water policies / Bangladesh
(Location: IWMI HQ Call no: e-copy only Record No: H052106)
(2.75 MB)
Water quality has recently emerged as one of the utmost severe ecological problems being faced by the developing countries all over the world, and Bangladesh is no exception. Both surface and groundwater sources contain different contaminants, which lead to numerous deaths due to water-borne diseases, particularly among children. This study presents one of the most comprehensive reviews on the current status of water quality in Bangladesh with a special emphasis on both conventional pollutants and emerging contaminants. Data show that urban rivers in Bangladesh are in a critical condition, especially Korotoa, Teesta, Rupsha, Pashur, and Padma. The Buriganga River and few locations in the Turag, Balu, Sitalakhya, and Karnaphuli rivers have dissolvable oxygen (DO) levels of almost zero. Many waterways contain traces of NO3, NO2, and PO4-3 pollutants. The majority of the rivers in Bangladesh also have Zn, Cu, Fe, Pb, Cd, Ni, Mn, As, and Cr concentrations that exceed the WHO permissible limits for safe drinking water, while their metal concentrations exceed the safety threshold for irrigation. Mercury poses the greatest hazard with 90.91% of the samples falling into the highest risk category. Mercury is followed by zinc 57.53% and copper 29.16% in terms of the dangers they pose to public health and the ecosystem. Results show that a considerable percentage of the population is at risk, being exposed to contaminated water. Despite hundreds of cryptosporidiosis cases reported, fecal contamination, i.e., Cryptosporidium, is totally ignored and need serious considerations to be regularly monitored in source water.
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