标题：Assessment of organochlorine pesticides contamination of Oued Souss estuary (South of Morocco): Seasonal variability in sediment and a detritivore annelid Neries diversicolor,
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2014
卷号：5
期号：2
页码：581-586
出版社：University of Mohammed Premier Oujda
摘要：The Oued Souss river drains an agricultural region with intense use of pesticides. In order to assess the organochlorine pesticides (OCPs) contamination in Oued Souss estuary, surface sediment and Neries Diversicolor samples are collected, seasonally, between July 2007 and June 2008. Ten OCPs residues are detected in this ecosystem: Endosulfan A, Endosulfan B, Endosulfan S, Dichlo fluanide, Fenarimol , Tetradifon, Lambda-Cyalothrin, vinclozolin, Lindane and Dichlo fluanide. Total OCPs in sediment oscillate between 82.6 and 4058.70 ng/g dw (dry weight). In Neries Diversicolor , the values are situated between 192.68 and 6949.68 ng/ g dw. Seasonal variations are noted in the surface sediment as well as in the Neries Diversicolor. These variations of contaminant concentrations can be explained by the reproductive cycle and also by the seasonal use of pesticides in agriculture. In fact these products are used mainly in spring
