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为了对生产环境空气中二甲基二丙烯三胺和四甲基二丙烯三胺实施卫生监督,作者用气相色谱法对其进行测定,浓度范围为0.5～20mg/m~3(工作环境空气中上述两种胺的最高容许浓度为1mg/m~3)。胺属于反应性强的物质,易被氧化,能与大部分气相色谱载体相互作用,使色谱分析复杂化,尤其是测定低浓度胺化合物时更是如此。为了排除吸附活性,通常将载体用碱处理或硅烷化处理。作者将载体Chromaton N用碱处理和先
In order to monitor the air quality of dimethyl dipropylene triamine and tetramethyldipropylene triamine in the production environment, the authors measured the concentration by gas chromatography in the concentration range of 0.5-20 mg / m 3 (working ambient air The maximum allowable concentration of the two amines is 1mg / m ~ 3). Amine is a reactive substance that is easily oxidized and interacts with most GC carriers to complicate chromatographic analysis, especially when measuring low concentrations of amine compounds. In order to exclude adsorption activity, the support is usually treated with an alkali or silanized. The authors treat the carrier Chromaton N with a base and first