摘要
利用水杨酸溶液吸收气相ＯＨ自由基,生成的荧光产物２,５－二羟基苯甲酸用高效液相色谱法分离测定,推算得到气相ＯＨ浓度,根据此原理在实验室条件下,建立了气相ＯＨ自由基的测定方法,井利用气相ＯＨ标准发生源确定了最优实验条件,得到了气相ＯＨ浓度与荧光响应关系,由液相吸收－高效液相色谱法测定的浓度与标准ＯＨ气流中的理沦浓度比较一致．
A calibration system for measuring gas-phase hydroxyl radicals (OH) was established by liquid- phase scrubbing and high performance liquid chromatography (HPLC). It was based on the OH reaction with salicylic acid which produces a stable fluorescent product, 2,5 -dihydroxybenzoic acid determined by HPLC and fluorescence detection. The OH concentration deduced from the amount of product is relatively uniformed with that in the calibration OH flow.
出处
《环境化学》
CAS
CSCD
北大核心
2001年第1期81-85,共5页
Environmental Chemistry
基金
国家自然科学基金资助项目(批准号:29837190)
