多环芳烃在黑土有机-矿质复合体中的老化行为  

Aging Behaviour of Polycyclic Aromatic Hydrocarbons in Organo-Mineral Aggregates from Black Soil

作　　者：黄擎[1] 李发生[2] 陈洪 

机构地区：[1]北京理工大学化工与环境学院,北京100081 [2]中国环境科学研究院,北京100012 [3]华美迅达科技(北京)有限公司,北京102600

出　　处：《北京理工大学学报》2007年第10期937-940,共4页Transactions of Beijing Institute of Technology

基　　金：国家重点基础研究发展计划项目(2004CB418501);国家自然科学基金资助项目(20677055)

摘　　要：研究多环芳烃菲和蒽在黑土不同粒径有机-矿质复合体中的老化现象，采用二氯甲烷提取法测定老化后多环芳烃菲和蒽的可提取性，比较不同粒径有机-矿质复合体中老化的速率．实验结果表明，老化90d后，菲的可提取率下降10％，蒽的可提取率下降30％，粘粒级复合体中最初阶段（0～15d）的老化速率最高，其余粒径复合体老化速率最高阶段基本都在15～28d．Aging behaviour of polycyclic aromatic hydrocarbons （PAHs） phenanthrene and anthracene in organo-mineral aggregates from black soil were studied under laboratory incubation. Changes in their extractability and aging rate in different fractions of organo-mineral aggregates were determined through extraction by dichloromethane. After incubation for 90 days, the extractability of phenanthrene and anthracene were seen to be decreased about 10% and 30%, respectively. In clay fractions, the aging rate in the first period （from 0 to 15 days） appeared highest, while in the other three fractions, the higher aging rates existed basically in the period from 15 to 28 days.

关 键 词：菲 蒽 黑土 有机-矿质复合体 老化行为 

分 类 号：X53[环境科学与工程—环境工程]