Journal
ECOTOXICOLOGY
Volume 23, Issue 9, Pages 1713-1721Publisher
SPRINGER
DOI: 10.1007/s10646-014-1332-5
Keywords
OCPs; Water; Sediment; Risk assessment; River Chenab; Pakistan
Categories
Funding
- Higher Education Commission of Pakistan (HEC) under the IRSIP (International Research Support Initiative Program)
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Residue levels, distribution patterns and ecological risk assessment of OCPs in water and sediment samples collected from two upstream feeding tributaries of the River Chenab, Pakistan were monitored. I OCPs pound levels in water and sediment ranged between 8 and 76 ng L-1 and 17 and 224 ng g(-1), respectively. The mean concentration of I HCH pound (hexachlorocyclohexane) was 3.3 +/- A 3.2 ng L-1 and 8.4 +/- A 9 ng g(-1) for water and sediment samples, respectively, while I DDT pound (dichlorodiphenyltrichloroethane) exhibited the average concentration of 9.07 +/- A 6.15 ng L-1 and 40.3 +/- A 26.2 ng g(-1) for water and sediment samples, respectively. The concentration of DDT and HCHs in both water and sediment samples were about 80 % of total OCPs and DDTs were the predominant organochlorines in the investigated matrix. DDTs and HCHs in sediment samples posed higher ecotoxicological risk and results were significant when compared with the quality guidelines. Results of the present study should be taken seriously by higher authorities as there is a serious threat to ecological integrities by OCPs exposure.
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