Jain C K
National Institute of Hydrology, Roorkee-247 667, Uttaranchal.
Indian J Environ Health. 2002 Jul;44(3):238-43.
The ground water in a huge alluvial tract along the river Hooghly covering a stretch of about 470 km., encompassing eight districts in the state of West Bengal (India) is affected by arsenic pollution of ground water. The probable source of arsenic has been reported to be through geological formations. Occurrence of iron-pyrite and the change of geo-chemical environment due to over-exploitation of ground water or excessive fluctuation of ground water table are the possible reasons of decomposition of pyrite to ferrous sulphate, ferric sulphate and sulfuric acid. However, no definite explanation regarding the source of arsenic could be established so far. Keeping in view the severity of the problem, an attempt has been made to bring out the nature and extent of arsenic problem in ground water of West Bengal, India, as well as need for watershed management to combat the situation.
胡格利河沿岸一片巨大的冲积地带，绵延约470公里，涵盖印度西孟加拉邦的八个区，其地下水受到砷污染影响。据报道，砷的可能来源是地质构造。黄铁矿的存在以及由于过度开采地下水或地下水位过度波动导致的地球化学环境变化，是黄铁矿分解为硫酸亚铁、硫酸铁和硫酸的可能原因。然而，迄今为止，关于砷的来源尚未有明确解释。鉴于该问题的严重性，已尝试阐明印度西孟加拉邦地下水砷问题的性质和程度，以及流域管理应对该情况的必要性。
