Presence of persistent organochlorine pesticides in estuaries of the subtropical Mexican Pacific

被引:10
作者
Robledo-Marenco, ML
Botello, AV
Romero-Bañuelos, CA
Díaz-González, G
机构
[1] Univ Autonoma Nayarit, CEMIC, Lab Contaminac & Toxicol, Tepic Nayarit 63190, Mexico
[2] Univ Nacl Autonoma Mexico, Inst Ciencias Mat & Limnol, Lab Contaminac Marina, Mexico City 04510, DF, Mexico
[3] Univ Autonoma Metropolitana, Dept Prod Agr & Anim, Mexico City 04960, DF, Mexico
关键词
organochlorine pesticides; sediments; shrimps; estuaries;
D O I
10.1504/IJEP.2006.009112
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A set of 40 samples of sediments and shrimps (Litopenaeus spp.) from two estuaries in the subtropical Mexican Pacific (San Bias, Nayarit) was analysed to determine the levels of organochlorine pesticides (OCPs). These pesticides have been widely used and dispersed in the study area, either for agriculture crops or control of malaria. For sediments of both estuaries (Pozo-Rey and San Cristobal), the results show that the most frequent compounds were the HCH isomers, endosulphan and DDT group. The shrimp's tissues follow the same pattern of pesticide distribution. The HCH isomers being the most frequent compounds, they demonstrated their broad use. The concentration of OCPs detected in this study area was lower than those previously reported in other wetlands from the Mexican Pacific. All OCPs identified in this work are banned by the Mexican legislation, with their consequent risks to the environment and the public health.
引用
收藏
页码:284 / 294
页数:11
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