研究简报
常理文,Giam C S.水和正已烷中痕量四氯联苯光降解研究[J].环境科学学报,1992,12(2):242-248
水和正已烷中痕量四氯联苯光降解研究
- STUDIES ON PHOTODEGRADATION OF TETRACHLO ROBIPHENYL IN WATER AND IN HEXANE BY GC-MS
- 基金项目：
- 作者
- 单位
- 常理文
- 中国科学院化学研究所, 北京 100080
- Giam C S
- Texas A&M University at Galveston USA
- 摘要：多氯联苯(PCBs)已成为全球性污染物,在人类生存的各种环境因素中,包括空气、水体、土壤、生物体,甚至远离大陆的海洋中已都发现PCBs的存在.自从发现PCBs能吸收190—240nm和280—310nm紫外光以来,人们推断PCBs吸收阳光中的紫外线后的光降解可能是从环境中除去PCBs的一种有效途径.因此对PCBs的光降解.
- Abstract：The photodegradation of trace tetrachlorobiphenyl(TCB) in water was carried out and compared with those in hexane. Dechlorina-tion processes during the photodegradation of TCB in water were observed and the photoproducts were identified by GC retention time and GC-MS. The photodegradation rate of TCB in water was 2-3 times slower than that in hexane.
- Key words：polychlorinated biphenyls photodegradation GC/MS
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