Contamination Of Agricultural Soil By ArsenicContaining Irrigation Water In Bangladesh:Overview Of Status And A Proposal For NovelBiological Remediation
Contamination Of Agricultural Soil By ArsenicContaining Irrigation Water In Bangladesh:Overview Of Status And A Proposal For NovelBiological Remediation
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孟加拉国农业土壤受含砷灌溉水污染：现状概述及新型生物修复建议
DOI：
10.2495/etox060301
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Kazuo Yamamoto
中科院分区：
文献类型：
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作者：
S. Islam;K. Fukushi;Kazuo Yamamoto
孟加拉国地下水中的砷毒性对公众健康构成严重威胁。那里有超过3500万人在饮用砷污染的地下水。迄今为止，人们为寻找安全的饮用水做了很多努力，但还没有找到合适的解决方案，而继续使用受砷污染的灌溉水进行种植，增加了农业用地的污染程度。本文的目的是回顾有关砷污染水灌溉的孟加拉国农业土壤中砷浓度的信息。此外，本文还对生物修复土壤中砷的研究进展进行了综述。每年高达10公斤/公顷的砷通过灌溉水循环并沉积在孟加拉国的表层土壤上，导致其累积积累。灌溉农田表层土壤砷含量高达83 mg /kg，而非灌溉农田表层土壤砷含量为3 ~ 9 mg /kg。考虑到土壤中砷浓度的上升趋势，有必要建立一些土壤中砷的净化程序。对于孟加拉国这样的发展中国家来说，生物清理可能是一个可行的解决方案。一项研究证实了生物去除土壤中砷的可行性。
Arsenic toxicity in the groundwater of Bangladesh poses a serious threat to public health. More than 35 million people are consuming arsenic-polluted groundwater there. So far, a lot of effort has been made to find safe drinking water but no suitable solution has yet been established, while continued cropping with arsenic contaminated irrigation water increases the extent of contamination in agricultural land. The objective of this paper is to review information on the arsenic concentration in the agricultural soil of Bangladesh irrigated with arsenic-contaminated water. In addition, this study overviews the literature, which focus on the biological remediation of arsenic from soil. Arsenic as high as 10 kg/ha per year is cycled through irrigated water and deposited on surface soil of Bangladesh, which results in its cumulative accumulation. It was observed to be as high as 83 mgAs/kg arsenic in the topsoil of irrigated agricultural land whereas in non-irrigated land arsenic was reported as 3-9 mgAs/kg. Considering the increasing trend of arsenic concentration in soil, it is necessary to establish some procedure for arsenic cleanup from soil. Biological cleanup could be a feasible solution for a developing country like Bangladesh. The feasibility of biological removal of arsenic from soil has been established in one study.