农业环境科学学报Issue(5)：943-950,8.DOI:10.11654/jaes.2014.05.017
DOM及pH对典型PAHs在土壤中迁移影响模拟实验研究
Influences of DOM and pH on PAHs Migrations in Soil Columns
摘要
Abstract
Vertical migrations of polycyclic aromatic hydrocarbons(PAHs)in soils are influenced by many factors. In a simulated experiment, vertical migrations of PAHs in soil columns were investigated at different levels of DOM and pH. Chloride ion(Cl-)was used to correct the migration rates of PAHs. The migration rates of PAHs were influenced by DOM concentrations. At low concentrations, DOM restrained the vertical migrations of PAHs, due to its cumulative adsorption and co-adsorption. At high concentrations, however, DOM formed surfactant colloids, and the PAHs could enter the colloids, leading to increased migrations. The migrations of PAHs in the columns increased with in-creasing pH values, due to promoted electrostatic exclusion from more charges of DOM from the dissociation at higher pH.关键词
再生水灌溉/多环芳烃/溶解性有机质(DOM)/pHKey words
reclaimed water irrigation/polycyclic aromatic hydrocarbons(PAHs)/dissolved organic matter(DOM)/pH分类
资源环境引用本文复制引用
乔肖翠,何江涛,杨蕾,邹合萍..DOM及pH对典型PAHs在土壤中迁移影响模拟实验研究[J].农业环境科学学报,2014,(5):943-950,8.基金项目
水利部公益项目（201101051-2）；2012环保部公益项目 （）
