Organochlorine Pesticide Residues and Metabolites in Fish from Lake Naivasha, Kenya  

作　　者：P.M. Njogu J.M. Keriko J.J. Kitetu 

机构地区：[1]Institute for Energy and Environmental Technology, Jomo Kenyatta University of Agriculture and Technology, Nairobi62000-00200, Kenya [2]Nairobi Campus, Jomo Kenyatta University of Agriculture and Technology, Nairobi 62000-00200, Kenya

出　　处：《Journal of Environmental Science and Engineering》2010年第6期19-23,共5页环境科学与工程（英文版）

摘　　要：This paper reports on the levels of 8 organochlorine pesticide residues and metabolites in three fish species; Tilapia （Oreochromis leucostictus）. Common carp （Cyprinus carpio） and Mirror carp （Cuprinus spectacularlus） from Lake Naivasha, Kenya. p,p＇-DDT, p,p＇-DDE, p,p＇-DDD, heptachlor, heptachlor epoxide, aldrin, dieldrin and methoxychlor were analyzed in fish specimens collected from Lake Naivasha during the months of November - December in 2008. The pesticide concentrations （in ~ag/Kg, wet weight） ranged within 0.42-4.185 p,g/Kg, for Heptachlor, BDL-0.291 Heptachlor epoxide, 0.433-4.733 Aldrin, BDL -0.341 Dieldrin, p,p＇ DDT, BDL-6.691 p,p＇ DDE, BDL-27.153 p,p＇ DDD, and BDL-28.867 methoxychlor. The pesticide residue levels varied widely between and within species. C. spectacularhts showed high pesticide levels followed by C. carpio and O. leueostictus respectively; this was attributed to the trophic position and age/size of fish. The occurrences of the pesticides indicate recent use in the catchment. The mean values and ranges of residues found in fish ware below the FAO/WHO maximum acceptable limits in fish and sea food however increased monitoring is recommended to detect any changes.

关 键 词：PESTICIDES ORGANOCHLORINE pollution METHOXYCHLOR DDT HEPTACHLOR 

分 类 号：S937[农业科学—渔业资源] TS272[农业科学—水产科学]