Health risk assessment of organochlorine pesticides with emphasis on DDTs and HCHs in abandoned agricultural soils

The aim of this study was to evaluate the consequence of changing land use from agriculture land to other use purposes with respect to OCPs non-cancer and cancer risk on human health, based on concentrations of DDTs and HCHs in soils collected from 55 locations representing 12 different land use types. There were no non-cancer risks of DDTs and γ-HCHs on adults and children, and there were very low cancer risks of DDD, o,p'-DDE, DDT, α-HCH, β-HCH, γ-HCH based on their total concentrations in all samples. Nonetheless, there were significant correlations of DDT to its metabolites (DDE and DDD) (r = 0.506 and r = 0.648) and DDE to DDD (r = 0.438) both at p < 0.01. OCP levels should be routinely monitored in different environmental media and food in order to verify whether there is fresh input. Their potential risks on human health should also be assessed.     

Globalization and environmental problems in developing countries

Environmental Science and Pollution Research -     

ICP-MS法测定电子电器材料中的有害元素铅、镉、砷、铬

建立了电感耦合等离子体质谱测定不同基体的电子电器材料中铅、镉、铬、砷四种有害元素的方法.对仪器的参数、测试稳定性等作了系统研究,优化了对不同基体样品中铅、镉、铬、砷元素分析的前处理条件,探讨了各种材料中基体元素与其它共存元素对待测元素的影响.方法检出限为0.0024-0.46μg·g-1,对标准物质的测定值与参考值相符,相对准偏差为0.6%-5.8%.