Arsenic species and chemistry in groundwater of southeast Michigan
Arsenic species and chemistry in groundwater of southeast Michigan
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DOI：
10.1016/s0269-7491(02)00114-8
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发表时间：
2002-01-01
影响因子：
8.9
通讯作者：
Haack, S
中科院分区：
文献类型：
--
作者：
Kim, MJ;Nriagu, J;Haack, S
1997年，从密歇根州东南部10个县的73口威尔斯井中采集的地下水样本的砷浓度范围为0.5至278 mug/l，平均值为29 mug/l。这些威尔斯井中约有12%的砷浓度超过了美国环保局目前规定的50微克/升的最高污染水平。大多数（53-98%）检测到的砷是亚砷酸盐[As（III）]，其他观察结果支持砷物种分布（低氧化还原电位和DO）。在浅层地下水（< 15 m）中，砷浓度很低，可能是由于形成了不溶性的氢氧化亚铁络合物。在深层地下水（> 15英寸）中，砷的浓度可能受富砷氢氧化铁/羟基氧化物的还原溶解和硫化砷矿物的溶解控制。(C)2002爱思唯尔科技有限公司版权所有。
Groundwater samples, taken from 73 wells in 10 counties of southeast Michigan in 1997 had arsenic concentrations in the range of 0.5 to 278 mug/l, the average being 29 mug/l. About 12% of these wells had arsenic concentrations that exceeded the current USEPA's maximum contaminant level of 50 mug/l. Most (53-98%) of the arsenic detected was arsenite [As(III)] and other observations supported the arsenic species distribution (low redox potential and DO). In shallow groundwater (< 15 m), arsenic concentrations are low likely due to the formation of insoluble ferrosoferric hydroxide complex. In deep groundwater (> 15 in), the concentration of arsenic is possibly controlled by reductive dissolution of arsenic-rich iron hydroxide/oxyhydroxide and dissolution of arsenic sulfide minerals. (C) 2002 Elsevier Science Ltd. All rights reserved.