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考察了在玫瑰红(RB)存在下γ-六氯环己烷(γ-HCH)在冰中的光降解.结果表明,光敏剂RB通过其激发态[RB]~*及其产生的~1O_2~*加速了γ-HCH的光降解,RB浓度是影响光降解率最显著的因素;γ-HCH在较低初始浓度下的光敏化降解更快;无机盐离子的种类和浓度可以改变冰表面上类液层(LLL)的比例从而影响γ-HCH的光解.通过分析γ-HCH光降解产物提出了RB存在时冰中γ-HCH的光降解作用机理.
The photodegradation of γ-HCH in ice was investigated in the presence of RB (rhodamine RB). The results showed that the photosensitizer RB, through its excited state [RB] ~ * and ~ 1O_2 ~ * Accelerated the photodegradation of γ-HCH, RB concentration was the most significant factor affecting photodegradation rate; γ-HCH photodegradation was faster at lower initial concentration; the type and concentration of inorganic salt changed the surface of ice (LLL), which affected the photolysis of γ-HCH.The mechanism of photodegradation of γ-HCH in ice was proposed by analyzing the photodegradation products of γ-HCH.