Distribution and Ecotoxicological Risk Assessment of Persistent Organic Pollutants (POPs) In River Sediments from Delhi, India

Kumar Bhupander, Mishra Meenu, Goel Gargi, Gaur Richa, Singh Satish Kumar, Prakash Dev, Kumar Sanjay, Sharma Chandra Shekhar

Abstract


Persistent organochlorine pesticides (OCPs) like hexachlorocyclohexane (HCH), and dichlorodiphenyltrichloroethane (DDT) and polychlorinated biphenyls (PCBs) and their ecotoxicological risks were investigated in river bank sediments from Yamuna in Delhi, India. The concentration of HCH, DDT and PCBs ranges between 19.25-731.82 (208.17±20.66) ng g-1, <0.01-21.21 (1.32±0.36) ng g-1 and 0.16 to 30.05 (7.69±0.90) ng g-1, respectively. The composition analysis of HCH and ratio of ±-HCH/-HCH reflects the usage of technical HCH and lindane.  The ratios of DDT and their metabolites indicate historical inputs of DDT or the biotransformation of DDTs in this area. Tri and tetra chlorinated biphenyls (PCB-37 and PCB-44) contributed >80% of the PCBs contamination. Concentration of HCHs, DDT and PCBs did not exceed sediment quality guidelines with the exception of lindane which was above sediment guidelines as lindane formulation are registered in India for use in public health practices to control vector borne diseases.

Keywords: Pesticides, POPs, HCH, DDT, PCBs, River Sediment, India


Full Text: PDF
Download the IISTE publication guideline!

To list your conference here. Please contact the administrator of this platform.

Paper submission email: ALST@iiste.org

ISSN (Paper)2224-7181 ISSN (Online)2225-062X

Please add our address "contact@iiste.org" into your email contact list.

This journal follows ISO 9001 management standard and licensed under a Creative Commons Attribution 3.0 License.

Copyright © www.iiste.org