γ辐射对水溶液中五氯苯酚（PCP）的辐射分解作用。

Radiolysis of pentachlorophenol (PCP) in aqueous solution by gamma radiation.

作者信息

Xue Jun, Wang Jianlong

机构信息

Laboratory of Environmental Technology, INET Tsinghua University, Beijing 100084, China.

出版信息

J Environ Sci (China). 2008;20(10):1153-7. doi: 10.1016/s1001-0742(08)62203-2.

DOI:10.1016/s1001-0742(08)62203-2

PMID:19143337

Abstract

Steady-state radiolysis experiments were performed to investigate the y-irradiation treatment of pentachlorophenol (PCP) in aqueous solution. The effect of initial concentration on the PCP degradation was also investigated. The experimental results showed that gamma-irradiation was able to degrade PCP in aqueous solution successfully, and the radiolytical degradation process of PCP could be described by the first-order kinetic model. When the initial concentration of PCP was 25 and 50 mg/L and the radiation dose was 4 and 6 kGy, respectively, the degradation efficiency was 100%. A luminescence bacterial test was used for evaluating the toxicity of the radiolytic intermediate products. Total detoxification of a 75 mg/L PCP solution could be achieved by carrying out the irradiation procedure at the dose of 15 kGy.

摘要

进行了稳态辐射分解实验，以研究γ射线辐照处理水溶液中的五氯苯酚（PCP）。还研究了初始浓度对PCP降解的影响。实验结果表明，γ射线辐照能够成功降解水溶液中的PCP，PCP的辐射降解过程可用一级动力学模型描述。当PCP的初始浓度分别为25和50mg/L，辐射剂量分别为4和6kGy时，降解效率为100%。采用发光细菌试验评估辐射分解中间产物的毒性。通过在15kGy的剂量下进行辐照程序，可以实现75mg/L PCP溶液的完全解毒。