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Assessment of Organic Pollutants and Their Source of Origin in Major Lake System in Pakistan

American Journal of Earth and Environmental Sciences
Vol.1 , No. 2, Publication Date: Apr. 27, 2018, Page: 86-94

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Authors

[1]	Abdul Ghaffar, Isotope Application Division, Hydrological Group, Pakistan Institute of Nuclear Science and Technology, Islamabad, Pakistan.
[2]	Naveed Iqbal, Isotope Application Division, Pakistan Institute of Nuclear Science and Technology, Islamabad, Pakistan.
[3]	Muhammad Rafiq, Isotope Application Division, Pakistan Institute of Nuclear Science and Technology, Islamabad, Pakistan.

Abstract

In Pakistan, there is an increasing apprehension regarding the pollution of drinking water resources due to the excess use of pesticides. Rawal Lake is biggest artificial water reservoir in Pakistan that provides approximately 22 million gallons/day to Rawalpindi and Islamabad, capital territory of Pakistan. Qualitative and quantitative measurement and source of origin of DDT, DDE, DCP, TCP, Cypermethrin and Endrin in the sediments and surface water samples of Rawal Lake, Islamabad, was carried out. The samples were pre-concentrated using SPE and SPME and analyzed by using HPLC and GC-MS. Simultaneous measurement of stable isotope (δ¹⁵N and δ¹⁸O) of nitrate in lake water were applied to identify the sources of organic pollutants in lake water systems. The overall results showed that sediments of Rawal Lake were more contaminated than the surface water and contamination level has crossed the toxic threshold level. Isotopic data revealed that nitrates in lake water were originated from agricultural and manure sources. Data advocated that the agricultural and poultry farmhouse activities in surrounding areas of lake significantly contributed towards induction of organic pollutants in lake.

Keywords

Surface Water, Sediments, Organic pollutants, δ¹⁵N and δ¹⁸O

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