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Modern agriculture practices reveal an increase in use of pesticides and fertilizers to meet the food demand of increasing population which results in contamination of the environment. In India crop production increased to 100% but the cropping area has increased marginally by 20%. Pesticides have played a major role in achieving the maximum crop production, but maximum usage and accumulation of pesticide residues was highly detrimental to aquatic and other ecosystem. The present study was chosen to know the level of organochlorines contamination in ground water of Thiruvallur district, Tamil Nadu, India. The samples were highly contaminated with DDT, HCH, endosulfan and their derivatives. Among the HCH derivatives, Gamma HCH residues was found maximum of 9.8 microg/l in Arumbakkam open wells. Concentrations of pp-DDT and op-DDT were 14.3 microg/l and 0.8 microg/l. The maximum residue (15.9 microg/l) of endosulfan sulfate was recorded in Kandigai village bore well. The study showed that the ground water samples were highly contaminated with organochlorine residues.
R Jayashree, and
N Vasudevan
June 2006,
Bulletin of environmental contamination and toxicology,
R Jayashree, and
N Vasudevan
January 2005,
Environment international,
R Jayashree, and
N Vasudevan
January 2012,
Environmental monitoring and assessment,
R Jayashree, and
N Vasudevan
November 2004,
Environmental monitoring and assessment,
R Jayashree, and
N Vasudevan
January 1994,
Environmental pollution (Barking, Essex : 1987),
R Jayashree, and
N Vasudevan
January 2005,
Bulletin of environmental contamination and toxicology,
R Jayashree, and
N Vasudevan
January 2022,
Nucleosides, nucleotides & nucleic acids,
R Jayashree, and
N Vasudevan
January 1995,
Bulletin of environmental contamination and toxicology,
R Jayashree, and
N Vasudevan
February 2002,
Food additives and contaminants,
R Jayashree, and
N Vasudevan
January 2000,
Roczniki Panstwowego Zakladu Higieny,
