环境工程学报2011，Vol.5Issue(6)：1419-1424,6.
有机质对污染土壤中DDTs热脱附行为的影响
Impact of organic matter on thermal desorption of DDTs in contaminated soils
摘要
Abstract
Two different soils, black earth and brown earth, were chosen as test samples. They were bothmixed with DDT pesticide ( known as DDTs, including p, p'DDT,o, p'~DDT,p, p'-DDD and p, p'-DDE). Un-der six gradually increase levels of residue times, 5,10,20,30,40 and 50 rain, respectively, thermal desorptiontechnology was adopted to study the removal rates and residual concentrations of DDTs in soils at 300 ~C. The re-sults showed that the removal of p,p'-DDT could be significantly enhanced by organic matter. In addition, or-ganic matter could remarkably influence the transformation and desorption of p,p'-DDE. By contrast, it had littleimpact on the removal of o,p'-DDT and p,p'-DDD. Moreover, there were significant differences in the removalrates of DDTs in soils before the removal of organic matter and after that.关键词
有机质/热脱附/污染土壤/DDTsKey words
organic matter/ thermal desorption/ contaminated soils/ DDTs分类
资源环境引用本文复制引用
王瑛,李扬,黄启飞,张增强..有机质对污染土壤中DDTs热脱附行为的影响[J].环境工程学报,2011,5(6):1419-1424,6.基金项目
国家科技支撑计划(2007BAC16B03,2006BAC02A19) （2007BAC16B03,2006BAC02A19）
