文章基本信息

标题：Lake Hydro Geochemistry: An Implication to Chemical Weathering, Ion-exchange Phenomena and Metal Interaction
本地全文：下载
作者：Dutta, G. ; Dutta, G. ; Gupta, S. 等
期刊名称：Pollution
印刷版ISSN：2383-451X
电子版ISSN：2383-4501
出版年度：2019
卷号：5
期号：4
页码：803-819
DOI：10.22059/poll.2019.280504.620
语种：English
出版社：University of Tehran
摘要：Present study aims to unravel the hydro geochemical interaction of sediment and water of Saheb bandh lake, West Bengal, India with an emphasis on heavy metal assessment. Lake water belongs to Ca2+ –HCO3 − type hydro geochemical faces and water-rock interaction primarily controls the lake water chemistry. Based on different Hydro chemical characteristics it is suggested that silicate weathering is the major hydro geochemical process operating in Saheb bandh lake water. Regarding point source contribution of pollutants the average value of NO3-N, TP and Hg are much higher in inlet water (7.5 mg/L, 1.29 mg/L and 8.5 µg/L) than the lake water (1.5 mg/L, 0.05 mg/L and 0.42 µg/L). Risk assessment indices suggest advanced decline of the sediment quality. Water-sediment interaction of heavy metals reveals that Cd, As, Pb and Hg metals enter into lake water as a result of not only natural processes but also of direct and indirect activities of humans. This study recommends that continuous monitoring of these metals in water and sediment and other aquatic biota of Saheb bandh should be directed to assess the risk of these vital heavy metals in order to maintain the safe ecology in the vicinity of this lake.
关键词：Hydro geochemistry; Heavy metal assessment; Water-rock interaction; Risk assessment; Saheb Bandh Lake