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标题：Contamination profile of organophosphorus pesticides (OPPs) residues in water, sediments and fish tissues of the Thamirabarani river system, South India
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作者：U. Arisekar ; Robinson Jeya Shakila ; Geevaretnam Jeyasekaran 等
期刊名称：International Research Journal of Environmental Sciences
电子版ISSN：2319-1414
出版年度：2018
卷号：7
期号：7
页码：7-15
语种：English
出版社：International Science Community Association
摘要：This study was undertaken to examine the extent of organophosphorus pesticides (OPPs) contamination in water, sediments and fish samples collected from the five sampling sites of Thamirabarani river viz. Manimuthar (site 1), Tirunelveli (site 2), Srivaikuntam (site 3), Authoor (site 4) and Punnakayal (site 5) following the standard protocol EPA 525.5 and AOAC 2007.01 QuEChERS using GC-MS. The concentration of OPPs in surface waters ranged from 0.01 to 13.74µg l-1; sediments from 0.81 to 19.05µg kg-1; and muscle of catla, rohu and tilapia from 0.01 to 1.89µg kg-1.Disulfoton, methyl parathion, phorate and parathion were the predominant OPPs found in Thamirabarani river system. Disulfoton (2.41µg l-1) and phorate (1.69µg l-1) were detected nearly the MRLs of 3µg l-1 and 2µg l-1, respectively in the water at site 4 is a concern of safety. The levels of OPP residues found in the muscles were below the maximum residual limits set by Joint committee on Food and Agriculture Organization and World Health Organization. A positive correlation existed between fat content and OPPs levels in fish muscle tissues. The results indicated that OPPs contamination is not prevalent in the Thamirabarani river basin, phorate and disulfoton levels need to be tested routinely to have a check on threshold levels. Accumulation of OPPs in sediments was relatively high and in accordance with the organic matter, except site 5, which have saline alkaline soil.
关键词：OPPs;Thamirabarani river;QuEChERS kit;GC-MS;Fishes;Bioaccumulation;Methyl parathion;MRLs