环境空气中二甲胺的测定

利用二甲胺与氯化铜及二硫化碳作用生成黄棕色二甲氨基二硫代甲酸铜的反应，分析测试环境空气中二甲胺的含量。确定了环境空气中二甲胺分析测试的显色温度和时间，采用2cm比色皿，以水为参比，在430nm处比色测定。结果表明，当采样流量为0．5L／min、采样时间为60min时，本方法检出限为0．007mg／m^3。该方法操作方便，精密度较好，能够满足环境空气中二甲胺的分析测试要求。

Determination on Dimethylamine in Air

Dethylamine, copper chloride and carlton dioxide produced yellow brown dimethylamino acid copper dithioearbamate. We utilized the response analysis the contents of dimethylamine in ambient air. The paper identified the color temperature and time, using a 2 cm width color plate, with water as reference in the 430 nm wavelength. When the sample collection rate of flow was 0.5 L/min, the time is 60 min, the limit of delection is 0.007 mg/m^3. Experamental dam showed that the method was easy to operate, with better accuration, that could meet the requiement of testing the content of dimethylamine in amibient air.