Increased retention of polycyclic aromatic hydrocarbons in soils induced by soil treatment with humic substances

被引:124
作者
Conte, P
Zena, A
Pilidis, G
Piccolo, A
机构
[1] Univ Naples Federico II, Dipartimento Sci Chim Agr, I-80055 Portici, Na, Italy
[2] Univ Ioannina, Dept Chem, GR-45110 Ioannina, Greece
关键词
soil; humic acid; polycyclic aromatic hydrocarbon; recovery efficiency; hydrophobicity;
D O I
10.1016/S0269-7491(00)00101-9
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The analytical recovery of a mixture of polycyclic aromatic hydrocarbons (PAHs) was determined from a soil before and after oxidation with hydrogen peroxide, and subsequently treated with increasing amounts of an exogenous humic acid and subjected to different incubation periods. The release of PAHs from soil depended on the specific structure and physico-chemical properties of each PAH, and increased with additions of exogenous humic materials for both the oxidized and non-oxidized soil as well as with time of PAH permanence in soil. PAH recoveries were lower in the non-oxidized soil, thereby revealing the importance of native organic matter in increasing PAH retention in soils. This study shows that mobility of PAHs in soils can be controlled by soil conditioning with humic substances. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:27 / 31
页数:5
相关论文
共 19 条