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Photolysis of polycyclic aromatic hydrocarbons on soil surfaces under UV irradiation

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Xu Chengbin 1   Dong Dianbo 2 *   Meng Xuelian 3   Su Xin 4   Zheng Xu 1   Li Yaoyao 1  
文摘 Photolysis of some polycyclic aromatic hydrocarbons (PAHs) on soil surfaces may play an important role in the fate of PAHs in the environment.Photolysis of PAHs on soil surfaces under UV irradiation was investigated.The effects of oxygen,irradiation intensity and soil moisture on the degradation of the three PAHs were observed.The results showed that oxygen,soil moisture and irradiation intensity enhanced the photolysis of the three PAHs on soil surfaces.The degradation of the three PAHs on soil surfaces is related to their absorption spectra and the oxidation-half-wave potential.The photolysis of PAHs on soil surfaces in the presence of oxygen followed pseudo first-order kinetics.The photolysis half-lives ranged from 37.87 days for benzo[a]pyrene to 58.73 days for phenanthrene.The results indicate that photolysis is a successful way to remediate PAHs-contaminated soils.
来源 Journal of Environmental Sciences ,2013,25(3):569-575 【核心库】
DOI 10.1016/s1001-0742(12)60083-7
关键词 photolysis ; soil surfaces ; polycyclic aromatic hydrocarbons ; UV irradiation
地址

1. School of Environmental Science, Liaoning University, Shenyang, 110036  

2. Liaoning Academy of Environmental Sciences, Shenyang, 110031  

3. School of Pharmacy, Liaoning University, Shenyang, 110036  

4. Shenyang Resident Audit Office of the People's Republic of China, Shenyang, 110013

语种 英文
文献类型 研究性论文
ISSN 1001-0742
学科 化学;环境科学基础理论
基金 国家自然科学基金国家杰出青年科学基金 ;  the Open Foundation of Key Laboratory of Industrial Ecology and Environmental Engineering ;  the Liaoning Doctoral Funds ;  Liaoning University Environment Institute Key Discipline Project
文献收藏号 CSCD:4776001

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