摘要
以高压汞灯为光源,分别研究了六氯苯在正己烷和邻苯二甲酸二异辛酯(DIOP)为有机气溶胶表层模拟介质时的光解,发现六氯苯在正己烷和DIOP中的光解半衰期分别约为<5 min和5 h,相差70倍以上.研究发现蒽醌和甲氧酚类气溶胶组分对六氯苯的光解具有光敏化作用,其反应机制可能分别为能量转移和抽氢反应.六氯苯光解的主要产物是五氯酚.
Hexachlorobenzene photolyzed completely in hexane solvent within several minutes under the radiation of a 500W high pressure mercury lamp, while its photolysis rate in diisooctyl phthalate solvem, which was chosen as a model for the organic phase of atmospheric combustion aerosols, was over 70 times slower. Anthaquinone and methoxyl phenols that known as aerosol constitutes accelerated the photodegradations of hexachlorobenzene though possible energy transfer and hydrogen abstraction mechanisms, respectively. Pentachlorobenzene was the main photoproduct of hexachlorobenzene.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2006年第12期2392-2395,共4页
Environmental Science
基金
国家自然科学基金项目(20507010
50578074)
关键词
六氯苯
气溶胶
光解
邻苯二甲酸二异辛酯
hexachlorobenzene
aerosol
photodegradation
diisooctyl phthalate
