Arsenic poisoning in the Ganges delta
Arsenic poisoning in the Ganges delta
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DOI：
10.1038/44052
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发表时间：
1999-10-07
期刊：
影响因子：
64.8
通讯作者：
Bhowmik, A
中科院分区：
文献类型：
--
作者：
Acharyya, SK;Chakraborty, P;Bhowmik, A
十年来，我们一直在研究印度西孟加拉的砷污染地下水以及随之而来的人类痛苦，过去四年来，我们一直在研究孟加拉国的砷污染地下水。通过对数千份水和沉积物样本的分析，我们已经能够测试Nicksonet al.to提出的孟加拉国地下水中毒事件的过程。我们不同意Nicksonet等人的观点。的说法，浅（有氧）威尔斯井中的砷浓度大多低于每升50微克。在我们从孟加拉国采集的样本（n= 9 465）中，在已知深度采集的7 800个砷含量超过每升50微克的样本中，有59%是从30米以下的深度采集的，在167个砷含量超过每升1 000微克的样本中，有67%是从11米至15.8米深的威尔斯井中采集的。
We have been studying the contamination of groundwater by arsenic and the attend-ant human suffering in West Bengal, India, for a decade, and in Bangladesh for the past four years. From our analysis of thousands of samples of water and sediment,,,,,,, we have been able to test the course of events proposed by Nicksonet al.to account for the poisoning of Bangladesh groundwater. We disagree with Nicksonet al.'s claim that arsenic concentrations in shallow (oxic) wells are mostly below 50 μg per litre. In our samples from Bangladesh (n=9,465), 59% of the 7,800 samples taken at known depth and containing arsenic at over arsenic 50 μg per litre were collected from depths of less than 30 m, and 67% of the 167 samples with arsenic concentrations above 1,000 μg per litre were collected from wells between 11 and 15.8 m deep.