Singh Sandeep, Mishra R N
Department of Chemistry, Kutir Post Graduate College, Chakkey, Jaunpur, India.
J Environ Biol. 2009 May;30(3):467-8.
Organochlorine pesticides residue (isomers of HCH alpha, beta, gamma and DDT) in Kuano river water at pre-monsoon and post-monsoon period were analyzed for the period June, 2004 to May, 2006 by TLC method. Results indicated that presence of isomers of HCH (alpha, beta, gamma) and DDT in both the study years even though the usage of both these pesticides is restricted. The higher concentration of pesticide was found in post monsoon. The total concentration of HCH ranges from 0.0002 to 0.020 microg l(-1) and 0.0002 to 0.009 microg l(-1) and total DDT concentration ranged from 0.0009 to 0.003 microg l(-1) and 0.00 to 0.0010 microg l(-1) during first and second year of study respectively. No temporal or spatial distribution pattern was found perhaps due to presence of multiple and aleatory sources. In most of the samples the pesticides residues detected were much higher than drinking water quality standards. It can be inferred that the environment maybe considerably degraded by these compounds, providing additional impact to the biota and bringing a potential risk to human health. More detailed Monitoring/studies have to be carried out on different months with a wider spectrum of pesticides to get a clear base line data for the entire location.
采用薄层色谱法，对2004年6月至2006年5月期间库阿诺河在季风期前和季风期后的水中有机氯农药残留（六氯环己烷α、β、γ异构体和滴滴涕）进行了分析。结果表明，尽管这两种农药的使用都受到限制，但在这两个研究年份中均检测到了六氯环己烷（α、β、γ）和滴滴涕的异构体。在季风期后发现农药浓度较高。在研究的第一年和第二年，六氯环己烷的总浓度分别为0.0002至0.020微克/升和0.0002至0.009微克/升，滴滴涕的总浓度分别为0.0009至0.003微克/升和0.00至0.0010微克/升。由于存在多种随机来源，未发现时间或空间分布模式。在大多数样品中，检测到的农药残留远高于饮用水质量标准。可以推断，这些化合物可能会使环境大幅退化，对生物群产生额外影响，并给人类健康带来潜在风险。必须在不同月份对更广泛的农药进行更详细的监测/研究，以便为整个地区获得清晰的基线数据。
