NATURAL ARSENIC IN GROUNDWATER: OCCURRENCE, REMEDIATION AND MANAGEMENT - CHAPTER 4 doc

... 69 .42 12.37 5.30 0.56 2.00 1.92 1.88 2.65 0.08 0.12 18 0 .46 17.8 48 . 74 14. 86 14. 85 1.13 5.36 1. 14 1.05 3.26 0.22 0.15 80 1 .49 20.5 70.03 11.95 4. 88 0.67 1. 74 2 .43 1.90 2.39 0.09 0. 14 15 0 .44 21.5 ... 60* Leaching does not occur 3 .4 84* Leaching does not occur 4. 0 19.8* Leaching does not occur 6 .4 49.7* 0.071 8.3 2 .48 0.252 10 .4 62.10* 0.103 16.3 2.35 0.112 17.2...

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... 19.9 49 .2 16 .4 0.3 118.0 108.1 91.61 1 .45 0.08 N-18 27.553 83. 742 29.0 6. 74 Ϫ0.197 5 04 45.6 bdl 6.2 64. 1 1.3 34. 5 90.8 19.5 0.9 177.8 170.2 95.72 2. 64 0.23 N-20 27.5 74 83.7 34 43.9 6.81 Ϫ0.168 40 7 ... Ϫ0.178 46 0 25.1 bdl bdl 11.1 2.1 39.7 116 .4 17.6 2.1 3 14. 2 313.9 99.93 16 .4 0 .46 N-23 27.613 83.651 27 .4 7.16 Ϫ0.1 54 407 0.9 1.9 bdl 36.8 1 .4 20.7 84. 8 17.7 1...

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... geochemical conditions (an oxidizing environment with neutral pH) that suggest significant immobilization by 73 -7 5 -7 0 -6 5 -6 0 -5 5 -5 0 -1 1 -7 δ 2 Η ‰ δ 18 Ο ‰ -1 0 -9 -8 y = 7.97x + 11.03 Figure 5. ... hydrological system, (2) to investigate the source(s) of 67 Natural Arsenic in Groundwater: Occurrence, Remediation and Management –...

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... composition the water characterization in the aquifer of the study area fit into the three main types, viz. Na-(K)-Cl-SO 4 , Ca-(Mg)-Na-(K)-SO 4 and Ca-(Mg)-Na-(K)-HCO 3 das reported by the earlier ... which high levels of arsenic were obtained in the soils collected 85 Natural Arsenic in Groundwater: Occurrence, Remediation and Management – Bundschuh, Bhattachar...

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... water and quality conform to the drinking water standards for arsenic and iron. 1 INTRODUCTION An alarmingly large population of India and Bangladesh, 66 million in the Gangetic belt of India and 79.9 ... Primary Drinking Water Regulations; Arsenic and Clarifications to Compliance and New Source Contaminants Monitoring; Final Rule, Federal Register 66 ( 14) , 6975. USEPA 20...

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... 2002). 2 ARSENIC AFFECTED FLOOD-DELTA PLAINS IN WEST BENGAL Pandemic arsenic contamination in the Bengal Basin is essentially confined to the low-lying Ganga-Brahmaputra flood-delta plain located ... Holocene entrenched floodplain in parts of lower-middle Gangetic plain in Bihar and eastern UP. Sediment cover on Pleistocene uplands in the Bengal Basin as well as, in interflu...

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... safe drinking water (1.5 mg/L; WHO 1993) in 16 out of the 40 sampled wells. 61 80 80 20 HCO 3 2 0 40 60 80 Ca 2+ 20 40 60 80 80 Na + + K + 40 f 20 80 60 4 0 60 - 40 40 SO 4 60 20 d b a 40 60 e c 20 g Ca ... ranging between 0 .4 1 .4 mg/kg (Fig. 5). Comparison of Fe, Al and Mn concentrations extracted by oxalate clearly indicated dominance of Al- and Mn-oxides an...

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... 95 Natural Arsenic in Groundwater: Occurrence, Remediation and Management – Bundschuh, Bhattacharya and Chandrasekharam (eds) © 2005, Taylor & Francis Group, London, ISBN 04 1536 700 X Arsenic ... possible contamination from arsenic through the food chain. In Groundwater Arsenic Contamination in the Bengal Delta Plains of Bangladesh (Proceedings of the KTH-Dh...

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... 2001. Arsenic uptake and metabolism in Bangladesh rice varieties. Arsenic in the Asia-Pacific Region Abstracts, p. 45 46 , CSIRO-ACIAR, Australia. Portman, J.E. & Riley, J.P. 19 64. Determination ... nutrient recycling process. This is obviously a major concern vis-a-vis soil pollution and contamination of the food chain through water-soil-crop transfer of contaminants. This...

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... Settling of As-rich smelter particulates, wind dispersion of solid tailings, and leachate run- off from tailings has contaminated soils around smelters and tailings. In addition, natural subsur- face ... Zimapán inhabitants. 6 CONCLUSIONS Arsenic is widely distributed in Zimapán. Mining wastes and natural arsenic- bearing mineraliza- tion release As to water, soils and plan...

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