Your search found 6 records
1 Simmons, Robert W.; Blümmel, M.; Reddy, R. C.; Khan, A. A. 2007. Impact of wastewater irrigation on Cd and Pb concentrations in rice straw and paragrass: implications for food safety. Paper presented at the First International Conference on Food Safety of Animal Products, Amman, Jordan, 12-14 November 2007. 4p.
Wastewater irrigation ; Fodder ; Feed grasses ; Rice straw ; Cadmium ; Lead ; Health hazards ; Risks ; Food safety / India / Hyderabad / Musi River
(Location: IWMI HQ Call no: IWMI 631.7.5 G635 SIM Record No: H040570)
https://food-safety.uni-hohenheim.de/fileadmin/einrichtungen/food-safety/Conferece_Contributions/Impact_of_wastewater_irrigation_on_Cd_and_Pb_concentrations_in_rice_straw_and_paragrass__Implications_for_food_safety..pdf
https://vlibrary.iwmi.org/pdf/H040570.pdf
https://vlibrary.iwmi.org/pdf/H040570.pdf
(0.11 MB) (50.50KB)
2 Dutta, S. K.; Singh, D.; Sood, Aditya. 2011. Effect of soil chemical and physical properties on sorption and desorption behavior of lead in different soils of India. Soil and Sediment Contamination, 20(3):249-260. [doi: https://doi.org/10.1080/15320383.2011.560979]
Soil chemicophysical properties ; Sorption ; Desorption ; Lead ; Statistical methods ; Analytical methods ; Multiple regression analysis ; Models ; Soil sampling ; Chemical composition / India
(Location: IWMI HQ Call no: e-copy only Record No: H043832)
(0.25 MB)
Lead (Pb) is a non-biodegradable contaminant, present in the environment, especially near lead-based industrial sites, agricultural lands, and roadside soils. Bioavailability of Pb in the soil is controlled by the sorption and desorption behavior of Pb, which are further controlled by the soil chemical and physical properties. In this study, sorption and desorption amounts of Pb in soil were compared with soil physical (sand, silt, clay content) and chemical (pH; electrical conductivity, EC; percent organic carbon, (%OC);cation exchange capacity, CEC) properties. Twenty-six surface soils (0–5cm), expected to vary in physical and chemical properties, were collected from different parts of India and were treated with known concentration of Pb solution (40 µg/L). The amount of Pb sorbed and desorbed were measured and correlated with soil properties using simple linear regressions. Sorption was significantly (p = 0.05) and positively correlated with pH, and %OC; desorption was significantly (p = 0.05) negatively correlated with the same two factors. Stepwise multiple regressions were performed for better correlations. Predicted sorption and desorption amounts, based on multiple regression equations, showed reasonably good fit (R2 = 0.79 and 0.83, respectively) with observed values. This regression model can be used for estimation of sorption and desorption amounts at contaminated sites.
3 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).
4 Haroon, B.; Ping, A.; Pervez, A.; Faridullah; Irshad, M. 2019. Characterization of heavy metal in soils as affected by long-term irrigation with industrial wastewater. Journal of Water Reuse and Desalination, 9(1):47-56. [doi: https://doi.org/10.2166/wrd.2018.008]
Wastewater irrigation ; Industrial wastewater ; Irrigated soils ; Heavy metals ; Contamination ; Lead ; Nickel ; Manganese ; Copper ; Cadmium ; Iron ; Zinc ; Soil properties ; Fractionation ; Farmers / Pakistan / Hattar
(Location: IWMI HQ Call no: e-copy only Record No: H049121)
https://iwaponline.com/jwrd/article-pdf/9/1/47/522943/jwrd0090047.pdf
https://vlibrary.iwmi.org/pdf/H049121.pdf
https://vlibrary.iwmi.org/pdf/H049121.pdf
(0.21 MB) (216 KB)
Investigation of heavy metals (HM) fractions in soils irrigated with wastewater (WW) would ascertain their bioavailability and contamination level in soils. This study investigated HM fractions in soils after long-term WW irrigation. WW irrigation profoundly affected HM fractions in soil. The ranges of HM concentrations in soils irrigated with WW were apparently wide. All fractions were significantly higher in the fields irrigated with industrial WW than rain-fed fields. HM concentrations varied in the soils as Pb > Cu > Ni > Zn > Fe > Cd > Mn after WW irrigation. In rainfed fields, HM concentrations differed in soils as Fe > Zn > Mn > Pb > Cd > Cu > Ni. The HM fractions were dominant in the residual form followed by oxides bound and carbonate associated fractions in WW-irrigated soils. Lower contents of HM in the soil were obtained in the exchangeable fraction. WW irrigation resulted in the transformation of HM into different fractions as residual > oxide associated > carbonate associated > organically bound > exchangeable form. Repeated WW irrigation increased pH values of the soils. The higher EC of soil indicated an accumulation of salts in the soils due to WW irrigation. Mitigation of HM contamination in Hattar industrial effluent is required before irrigation.
5 Nyachoti, S.; Godebo, T. R.; Okwori, O. F.; Jeuland, M. A.; Manthrithilake, Herath. 2022. Dietary exposures to metals in relation to chronic kidney disease of unknown cause (CKDu) in Sri Lanka. Exposure and Health, 14(1):63-73. [doi: https://doi.org/10.1007/s12403-021-00418-4]
Kidney diseases ; Chronic course ; Dietary factors ; Rice ; Toxic substances ; Metals ; Risk factors ; Arsenic ; Lead ; Cadmium ; Selenium / Sri Lanka
(Location: IWMI HQ Call no: e-copy only Record No: H050676)
(2.29 MB)
Exposure to metals has been hypothesized as possible cause of chronic kidney disease of unknown cause (CKDu) in Sri Lanka; however, evidence is inconclusive. We measured the concentrations of nephrotoxic metals (As, Pb, and Cd), as well as Se in rice (a staple grain in Sri Lanka) and other grains consumed in CKDu endemic and non-endemic regions using Inductively Coupled Mass Spectrometry (ICP-MS). Our results showed comparable mean concentrations (in µg/kg) of 24.5±18, 7.3±6.4, and 14.2±15 for As, Pb, and Cd, respectively, in rice from endemic regions and 17.7±4.7, 12.7±6.8, and 17.8±16 in rice from non-endemic regions. Selenium concentrations (in mg/kg) were 0.05±0.02 in rice cultivated in both endemic and non-endemic regions. Arsenic and Cd concentrations were significantly higher in rice compared to other grains, which themselves had higher Se than rice. All samples were below the Codex standards established for Cd (400 µg/kg for rice; 100 µg/kg for cereal grains), Pb (200 µg/kg) and inorganic As (200 µg/kg) for white rice. Our findings show that dietary exposure to low levels of As, Pb, Cd, and inadequate Se in staple grains cannot be clearly linked to CKDu, suggesting that the disease could be multifactorial. Additional research is needed to determine the contribution of other risk factors such as lifestyle habits and heat stress to plan preventive strategies for reducing CKDu health cases in Sri Lanka.
6 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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