气相色谱直接进样法分析环己烷氧化废液中的有机酸

Gas chromatographic estimation of organic acids in waste liquor of oxidized cyclohexane with direct sample injection

环己烷氧化废液经酸化、抽滤等预处理后 ,采用气相色谱直接进样法分离了样品中的 1 0种有机酸 ,并测定了其含量。测定废液中各有机酸的回收率在 95 %～ 1 0 5 %之间。气相色谱固定相为 5 %新戊二醇己二酸酯 +0 .2 %磷酸/1 0 1酸洗白色担体。

A gas chromatography method was used for estimating ten organic acids in waste liquor of oxidized cyclohexane. The waste liquor, after being acidified and filtered, was injected directly into the column. The NPGA packed column was used. The recoveries of the ten organic acids were in the range of 95%～105%.