Sorption kinetic characteristics of polybrominated diphenyl ethers on natural soils

被引：52

作者：

Liu, Wenxin ^{[1
]}

Li, Weibo ^{[1
]}

Hu, Jing ^{[1
]}

Ling, Xi ^{[1
]}

Xing, Baoshan ^{[2
]}

Chen, Jianglin ^{[3
]}

Tao, Shu ^{[1
]}

机构：

[1] Peking Univ, Coll Urban & Environm Sci, Lab Earth Surface Proc, Beijing 100871, Peoples R China

[2] Univ Massachusetts, Dept Plant Soil & Insect Sci, Amherst, MA 01003 USA

[3] SOA, N China Sea Standard & Metrol Ctr, Qingdao 266033, Peoples R China

来源：

ENVIRONMENTAL POLLUTION | 2010年 / 158卷 / 09期

基金：

中国国家自然科学基金;

关键词：

BDE-28; BDE-47; Soil sorption; Kinetics; PHENANTHRENE; FATE;

D O I：

10.1016/j.envpol.2010.06.021

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Sorption kinetic characteristics of BDE-28 and BDE-47 on five natural soils with different organic carbon fractions were investigated, and could be satisfactorily described by a two (fast and slow)-compartment first-order model with the ratio of rate constants ranged from 9 to 94 times. The fast compartment made a dominant contribution (71% similar to 94%) to the total sorption amount in the whole process, and accounted for over 90% of the increase in the total sorption amount at initial 5 h. The influence of the slow compartment on the increase in the total sorption amount became principal (above 90%) in the subsequent stage approximately from 9 h or 25 h to the apparent equilibrium at 265 h. The results proposed the different sorption behaviors of the mathematically classified compartments for BDE-28 and BDE-47, which may correspond to the different soil components, such as soil organic fractions with amorphous and condensed structures, respectively. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2815 / 2820

页数：6

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