Jayashree R, Vasudevan N
Centre for Environmental Studies, Anna University, Chennai, 600025, Tamil Nadu, India.
Environ Monit Assess. 2007 May;128(1-3):209-15. doi: 10.1007/s10661-006-9306-6. Epub 2006 Oct 3.
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.
现代农业实践表明，为满足不断增长的人口对食物的需求，农药和化肥的使用量有所增加，这导致了环境污染。在印度，作物产量增长了100%，但种植面积仅略有增加，为20%。农药在实现最大作物产量方面发挥了重要作用，但农药残留的大量使用和积累对水生生态系统及其他生态系统极为有害。本研究旨在了解印度泰米尔纳德邦蒂鲁瓦勒尔区地下水有机氯污染水平。样本受到滴滴涕、六氯环己烷、硫丹及其衍生物的高度污染。在六氯环己烷衍生物中，在阿鲁姆巴卡姆露天井中发现γ-六氯环己烷残留量最高，为9.8微克/升。对，对'-滴滴涕和邻，对'-滴滴涕的浓度分别为14.3微克/升和0.8微克/升。硫丹硫酸盐的最大残留量（15.9微克/升）记录在坎迪盖村的井中。研究表明，地下水样本受到有机氯残留的高度污染。
