Assessment of DDT levels in selected environmental media and biological samples from Mexico and Central America

作者：Perez Maldonado Ivan N; Trejo Antonio; Ruepert Clemens; del Carmen Jovel Reyna; Patricia Mendez Monica; Ferrari Mirtha; Saballos Sobalvarro Emilio; Alexander Carlos; Yanez Estrada Leticia; Lopez Dania; Henao Samuel; Pinto Emilio R; Diaz Barriga Fernando^*

来源：Chemosphere, 2010, 78(10): 1244-1249.

DOI：10.1016/j.chemosphere.2009.12.040

• DDE
• Mexico
• Children
• Pollutant organic persistents
• Plasma
• Soil

Taking into account the environmental persistence and the toxicity of DDT, the Pan American Health Organization (PAHO) organized a surveillance program in Mesoamerica which included the detection of residual DDT in environmental (soil) and biological samples (fish tissue and children's blood). This program was carried out in communities from Mexico, Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica and Panama. This paper presents the first report of that program. As expected, the results show that the levels for Sigma DDT in soil (outdoor or indoor) and fish samples in the majority of the locations studied are below guidelines. However, in some locations, we found children with high concentrations of DDT as in Mexico (mean level 50.2 ng/mL). Furthermore, in some communities and for some matrices, the DDT/DDE quotient is higher than one and this may reflect a recent DDT exposure. Therefore, more efforts are needed to avoid exposure and to prevent the reintroduction of DDT into the region. In this regard it is important to know that under the surveillance of PAHO and with the support of UNEP, a regional program in Mesoamerica for the collection and disposal of DDT and other POPs stockpiles is in progress.

• 出版日期2010-3