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May 18, 2016
Effects of Heavy Metals of Bleaching and Dyeing Effluent on Soil, Vegetables, and Fruits in the Maheshtala Region in West Bengal, India
Authors: Biman Gati Gupta, Kamales M. Agrawal, and Jayanta Kumar Biswas [email protected]Author Affiliations
Publication: World Environmental and Water Resources Congress 2016
Abstract
The environmental exposure to heavy metals is a well-known risk factor for several gastrointestinal (GI) disorders. The present study was conducted at Maheshtala textile, bleaching dyeing industrial area for two consecutive years (2012–2013) to study the impact of bleaching and dyeing effluent discharge on accumulation of heavy metals in canal water, soil, fruits, and vegetable as a part of environment management of the area and ecological planning. During experiment, we investigated the levels of heavy metals (Pb, Zn, Ni) in effluent of small bleaching and dyeing units in soil, fruits, and vegetable samples of Maheshtala region of South 24-Pargana district of West Bengal, India, where gastrointestinal disorders have become an epidemic dimension among the people inhabiting that area. Heavy metals contents of the samples were determined by atomic absorption spectrophotometer. Three heavy metals (Pb, Cd, and Ni) were present in 2–40 fold higher concentrations whereas zinc level was present in 50 fold lower concentrations in vegetable and fruits. The higher concentrations of heavy metals in aquaphytes, vegetables, and fruit samples tested were found to be strongly correlated with the concentrations of metals present in soil or water matrix contaminated with effluents of bleaching and dyeing industries. The soil, fruits, and vegetable samples contained potentially toxic heavy metals in such high levels that these elements could be related to higher prevalence and/or vulnerability of GI disorder, ulcer, and cancer risks in Maheshtala region under study.
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© 2016 American Society of Civil Engineers.
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Published online: May 18, 2016
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Biman Gati Gupta
Dept. of Ecological Engineering and Environment Management and International Centre for Ecological Engineering, Univ. of Kalyani, Kalyani, West Bengal 741235, India.
Kamales M. Agrawal
Dept. of Environment Management, Indian Institute of Social Welfare and Business Management, College Square West, Kolkata -73.
Dept. of Ecological Engineering and Environment Management and International Centre for Ecological Engineering, Univ. of Kalyani, Kalyani, West Bengal 741235, India. E-mail: [email protected]
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