Dissipation gradients of phenanthrene and pyrene in the Rice rhizosphere

被引：27
|
作者：
Gao, Y. [1 ,2 ]
Wu, S. C. [1 ,2 ]
Yu, X. Z. [1 ,2 ]
Wong, M. H. [1 ,2 ,3 ]
机构：
[1] Hong Kong Baptist Univ, Croucher Inst Environm Sci, Kowloon Tong, Hong Kong, Peoples R China
[2] Hong Kong Baptist Univ, Dept Biol, Kowloon Tong, Hong Kong, Peoples R China
[3] Chinese Acad Sci, Inst Urban Environm, Xiamen, Peoples R China
来源：
ENVIRONMENTAL POLLUTION | 2010年 / 158卷 / 08期
关键词：
Rice; Bacteria; PAHs dissipation gradients; Rhizosphere; POLYCYCLIC AROMATIC-HYDROCARBONS; MASS-TRANSFER LIMITATION; SOIL; PAHS; BIODEGRADATION; DEGRADATION; WATER; BIOREMEDIATION; PHYTOREMEDIATION; ADSORPTION;
D O I：
10.1016/j.envpol.2010.05.012
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
An experiment was conducted to reveal the effects of rice cultivation as well as polycyclic aromatic carbohydrates (PAHs) degrading bacterium (Acinetobacter sp.) on the dissipation gradients of two PAHs (PHE and PYR) in the rhizosphere. The results showed that the presence of rice root and bacteria significantly accelerated the dissipation rate of PHE and PYR. The root exudates contributed to the formation of dissipation gradients of PHE and PYR along the vertical direction of roots, with a higher dissipation rate in the rhizosphere and near rhizosphere zone than the soil far away the rhizosphere. (C) 2010 Published by Elsevier Ltd.
引用
收藏
页码：2596 / 2603
页数：8
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