直接进样气相色谱法测定水中6种有机溶剂残留

Determination of six residual organic solvents in water by direct injection gas chromatography

建立了直接进样气相色谱氢火焰检测器法同时测定水中丙酮、乙酸乙酯、甲醇、乙醇、异丙醇、乙腈的方法。6种有机溶剂检出限为0.06～0.18mg/L。回收试验的回收率为94.7%～106.4%,相对标准偏差为0.6%～4.4%(n=6)。结果表明:该法操作方便,准确度和精密度均较好,可用于水中6种有机溶剂的测定。

The detected residual organic solvents in water are acetone,ethyl acetate,methanol,ethanol,isopropanol and acetonitrile.The detection limits range 0.06—0.18 mg/L.The recovery is 94.7%—106.4%,and the relative standard deviation is 0.6%—4.4%(n=6).the method can be used for determination of six organic solvents in water.