首页>
外国专利>
method for continuous determination of dimethylformamid and dimethylamin in aqueous solutions, especially in waste water.
method for continuous determination of dimethylformamid and dimethylamin in aqueous solutions, especially in waste water.
展开▼
机译:连续测定水溶液,特别是废水中二甲基甲酰胺和二甲基胺的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A description is given of a method for the continuous determination of dimethylformamide and/or dimethylamine in aqueous solutions, specifically in industrial waste water, which is characterised in that a constant subflow is continuously collected from the waste water flow, the subflow is subjected to alkaline hydrolysis under constant conditions using an alkaline solution added at a constant rate, the subflow is subjected to a partial evaporation under constant evaporation conditions, the resultant vapour flow is condensed by cooling, the electrical conductivity of the condensate is continuously determined in a flow-type measuring cell, and the measurements obtained are converted into the required concentration values using a calibration curve or known formulae. …IMAGE…
展开▼