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arsenic contamination in soils, water and plants

arsenic contamination in soils, water and plants

arsenic contamination in soils, water and plants

... 0.3 mg/kg in plants and 0.001-0.01 mg/l in surface water. Contamination in soils and plants were found higher much larger than those in surface water flown from the tailing of gold mining disposal ... management in near future, the samples of top soils, water and plants were collected from the surrounding area of Gold Mine, within watershed covering gold mine and nearby watershed, to conduct the contamination ... 1 Arsenic contamination in soils, water and plants surrounding gold mine in Thailand Thares Srisatit 1 , Wanpen Wirojanagud 2 , Thanes Weerasiri 3 1 Faculty of Environmental Engineering,...
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Effects of compost and phosphate amendments on arsenic mobility in soils and arsenic uptake by the hyper

Effects of compost and phosphate amendments on arsenic mobility in soils and arsenic uptake by the hyper

... contamination from the leaching lossesof wood preservatives. As arsenic accumulates in soils, there may be an increase in health risks resulting fromAs leaching into ground and surface water and ... amendment increases the effectiveness of Chinese brake fern to remediate As-contaminated soils, by increasing As uptake and decreasing As leaching.AbstractChinese brake fern (Pteris vittata L.), an arsenic ... public health and the environment (Hingston etal., 2001). Arsenic contamination in soils results fromvarious human activities including milling, combustion,wood preservation, and pesticide...
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Heavy metal contamination in soils of urban highways (comparision between runoff and soil concentration

Heavy metal contamination in soils of urban highways (comparision between runoff and soil concentration

... fraction whereas Cu is mainly in the stronglybound organic and residual phases. Hewitt and Candy (1990), examined levels ofPb, Cd and Zn in soil and dust samples collected in and around the city ... background values. The contamination decreases as depth increases and it increases as the amount of organic C increases in the soil. The relationship between amount of contamination and amount of organicC ... also investigatedpartitioning of metals and solids in storm water. Their results indicated that Zn, Cd,Cu were mostly in dissolved form whereas Pb, Fe and Al were particulate-bound in storm water. In...
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Arsenic fractionation in soils using an improved sequential extraction procedure

Arsenic fractionation in soils using an improved sequential extraction procedure

... commonly used SEPs in fractionat-ing As and Se using standard minerals and mixturesthereof [17]. They showed that during reductive and oxidative dissolution of As from a certain mineralphase, re-adsorption ... 98/83/EC [2] has fixed a limit of 10 ␮gAsl−1 in drinking water in accordance with the WHO limit[3]. Arsenic contamination may be prevalent at mining0003-2670/01/$ – see front matter © 2001 ... remove As in the solution entrapped in the remaining soil aftercentrifugation; 10 ml deionized water were added tothe remaining soil. After 2 min shaking, the solutionwas separated and further...
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Báo cáo

Báo cáo " Preparation of nano-structural MnO2 in ethanol-water media coated on calcinated laterite and study of its arsenic adsorption capacity " docx

... solution was concerning to changing water structure, competition of hydration and solvation and for long chain molecule solvent, there appeared net-like of solvent molecules in water solution; ... approximate 60 nm and the width 20 nm. The effect of organic solvents on formation of chemical elements existing in water solution was revealed [6] and applied in chemistry since a long time ... dropped into 250 ml arsenic solution of 1000 ppb concentration. The solution was stirred continuously. Periodically arsenic concentration was determined. The investigation results were showed in...
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Poisoning the Well: How the EPA is Ignoring Atrazine Contamination in Surface and Drinking Water in the Central United States pot

Poisoning the Well: How the EPA is Ignoring Atrazine Contamination in Surface and Drinking Water in the Central United States pot

... Widespread Atrazine Contamination and Inadequate Regulation and MonitoringNRDC analyzed in combination for the first time—the results of surface water and drinking water monitoring required by ... CouncilPoisoning the Well: How the EPA is Ignoring Atrazine Contamination in Surface and Drinking Water in the Central United StatesNRDC ReportAugust 2009The full report on atrazine contamination ... reduced. Poisoning the Well: How the EPA is Ignoring Atrazine Contamination in Surface and Drinking Water in the Central United States Atrazine concentration (ppb)Watershed name Sampling year...
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