Soil-Air Partitioning of Polychlorinated Biphenyls and Total Dichloro-Diphenyl-Trichloroethanes

作     者：Yaping Zhang Erping Bi Honghan Chen 

作者机构：School of Water Resources and Environment China University of Geosciences (Beijing) Beijing Key Laboratory of Water Resources and Environment Engineering China University of Geosciences (Beijing) 

出 版 物：《Journal of Earth Science》 (地球科学学刊（英文版）)

年 卷 期：2014年第25卷第4期

页      面：741-748页

核心收录：

学科分类：12[管理学] 1204[管理学-公共管理] 082803[工学-农业生物环境与能源工程] 08[工学] 0828[工学-农业工程] 0708[理学-地球物理学] 0704[理学-天文学] 120405[管理学-土地资源管理] 

基　　金：supported by the National Natural Science Foundation of China (No. 41172223) the Fundamental Research Funds for the Central Universities (No. 2652012089) the Commonwealth and Environmental Protection Project of the Ministry of Environmental Protection of the People’s Republic of China (No. 201209053) 

主　　题：soil-air interface partition sorption polychlorinated biphenyl (PCB) dichloro-diphenyltrichloroethanes (DDT). 

摘      要：Soil-air partitioning is an important diffusive process that affects the environmental fate of organic compounds and human health. In this review, factors affecting the soil-air partitioning of polychlorinated biphenyls （PCBs） and total dichloro-diphenyl-trichloroethanes （p,p＇- and o,p＇- isomers of DDT, DDD, and DDE） are discussed. Hydrophobicity is an important factor that influences soil-air partition coefficients （KsA）, and its effect can be explained through enthalpy of phase change for soil-air partitioning transfer （AHsA）. For more hydrophobic compounds, a sharp increase in the KSA of PCBs and organochlorines can be seen in the early aging period. During the aging period, the temperature has a significant effect on the more hydrophobic organic compounds. The content and properties of soil or- ganic matter influence the KSA of the target compounds. Generally, KSA decreases with increasing rela- tive humidity in soils. The linear trend between KSA and temperature （T） changes at 0 ~C. Freezing the air or soil in experiments would change the research results. On the basis of factors influencing soil-air partitioning, a multipleparameter （T, organic carbon fraction （foe）, and octanol-air partition coefficient （KoA）） model is put forward to predict the KSA values for PCBs and total DDTs.