| Ecotoxicological risks associated with tannery effluent wastewater. | |
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MedLine Citation:
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PMID: 22522427 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The problem of water pollution acquires greater relevance in the context of a developing agrarian economy like Pakistan. Even though, the leather industry is a leading economic sector in Pakistan, there is an increasing environmental concern regarding tanneries because they produce large amounts of potentially toxic wastewater containing both trivalent and hexavalent chromium, which are equally hazardous for human population, aquaculture and agricultural activities in the area. Therefore, we defined the scope of the present study as to employ different bioassays to determine the eco-toxic potential of tannery effluent wastewater (TW) and its chromium based components, i.e., potassium dichromate (K(2)Cr(2)O(7)) and chromium sulfate Cr(2)(SO(4))(3). Particle-induced X-ray emission (PIXE) analysis of TW was carried out to determine the concentration of chromium in TW and then equal concentrations of hexavalent (K(2)Cr(2)O(7)) and trivalent chromium Cr(2)(SO(4))(3) were obtained for this study. Cytotoxicity assay, artemia bioassay and phytotoxicity assay was utilized to investigate the eco-toxicological potential of different concentrations of TW, K(2)Cr(2)O(7) and Cr(2)(SO(4))(3). All the dilutions of TW, K(2)Cr(2)O(7) and Cr(2)(SO(4))(3) presented concentration dependent cytotoxic effects in these assays. The data clearly represents that among all three tested materials, different dilutions of K(2)Cr(2)O(7) caused significantly more damage (P<0.001) to vero cell, brine shrimp and germination of maize seeds. Interestingly, the overall toxicity effects of TW treated groups were subsequent to K(2)Cr(2)O(7) treated group. Based on biological evidences presented in this article, it is concluded that hexavalent chromium (K(2)Cr(2)O(7)) and TW has got significant eco-damaging potential clearly elaborating that environmental burden in district Kasur is numerous and high levels of chromium is posing a considerable risk to the human population, aquaculture and agricultural industry that can obliterate ecosystem surrounding the tanneries. |
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Authors:
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Lubna Shakir; Sohail Ejaz; Muhammad Ashraf; Naureen Aziz Qureshi; Aftab Ahmad Anjum; Imran Iltaf; Aqeel Javeed |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-3-11 |
Journal Detail:
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Title: Environmental toxicology and pharmacology Volume: 34 ISSN: 1872-7077 ISO Abbreviation: - Publication Date: 2012 Mar |
Date Detail:
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Created Date: 2012-4-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9612020 Medline TA: Environ Toxicol Pharmacol Country: - |
Other Details:
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Languages: ENG Pagination: 180-191 Citation Subset: - |
Copyright Information:
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Crown Copyright © 2012. Published by Elsevier B.V. All rights reserved. |
Affiliation:
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Angiogenesis and Toxicology Research Laboratory, Department of Pharmacology & Toxicology, University of Veterinary and Animal Sciences, Lahore, Pakistan; School of Pharmacy, Hajvery University, Lahore, Pakistan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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