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首页> 外文期刊>International journal of PIXE >EAST CALCUTTA WETLANDS AS A SINK OF INDUSTRIAL HEAVY METALS: A PIXE STUDY
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EAST CALCUTTA WETLANDS AS A SINK OF INDUSTRIAL HEAVY METALS: A PIXE STUDY

机译：东加尔各答的湿地作为工业重金属的沉陷：像素研究

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摘要

Industrial wastes are considered as critical factors for disturbing natural ecosystems. The East Calcutta Wetlands, a Ramsar site in West Bengal, India, receives composite industrial effluents, subsequently bringing various kinds of heavy metals throughout the year. This wastewater is being utilized by the local people for pisciculture. The present investigation was carried out to study 1) elemental distribution various components of the wetland and 2) potentiality of water hyacinth in metal amelioration. Water and sediments were collected from four different spots along a wastewater-carrying canal having a stretch of 40km from the source point to the final confluence with river and from the wastewater fed fishpond. Fish (three common carps viz. Labeo rohita, Cirrhinus mrigala and Oreochromis niloticus) and water hyacinth were collected from fishpond mentioned above. Samples were analyzed by PIXE with 3MeV tandem Pelletron. Cr, which is a known metal contaminant of tannery effluent, was detected along with S, K, Ca, Ti, V, Mn, Fe, Ni, Cu, Zn, As, Br, Rb, Sr, Zr. Variable concentrations of some elements like Ca, Fe, Zn in different fish organs was noted in the experiment. Accumulation of Cr, Cu from the water bodies by water hyacinth suggesting their crucial role in heavy metal amelioration.
机译：工业废物被认为是干扰自然生态系统的关键因素。位于印度西孟加拉邦拉姆萨尔（Ramsar）的东加尔各答湿地（East Calcutta Wetlands）接收复合工业废水，随后全年引入各种重金属。这些废水被当地人用于养鱼。进行本研究以研究1）湿地的各种成分的元素分布和2）水葫芦在金属改良中的潜力。沿污水输送运河的四个不同点收集水和沉积物，该运河从水源点到与河的最终汇合点之间的距离为40公里，并从喂鱼的污水池中收集。从上述鱼池中收集了鱼（三个普通鲤鱼，即Labeo rohita，Cirrhinus mrigala和Oreochromis niloticus）和水葫芦。通过PIXE和3MeV串联Pelletron分析样品。 Cr是制革厂废水的已知金属污染物，与S，K，Ca，Ti，V，Mn，Fe，Ni，Cu，Zn，As，Br，Rb，Sr，Zr一起被检测到。实验中注意到不同鱼类器官中某些元素（如钙，铁，锌）的浓度变化。水葫芦从水体中积累的Cr，Cu表明其在重金属改善中的关键作用。

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