尿中甲乙酮测定的顶空气相色谱法

Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases(2019)

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Abstract
目的 建立尿中甲乙酮的顶空气相色谱测定方法.方法 尿液样品中甲乙酮经过顶空技术预处理后,取一定量的顶空气体注入气相色谱仪,经过毛细管柱分离,氢火焰离子化检测器检测,保留时间定性,峰高或峰面积定量.结果 该方法尿中甲乙酮浓度在0.01~6.0 μg/ml呈线性,回归方程y=13.316x+0.849 7,r=0.999 7;最低检出浓度0.01 μg/ml,方法回收率为96.0%~100.4%;日内、日间相对标准偏差(RSD)分别为2.2%~5.5%和2.5%~6.1%,尿样在4℃冰箱中可保存21 d.结论 该方法的灵敏度高、准确度好,操作步骤简便,适用于尿中甲乙酮的检测.
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Key words
Chromatography,Headspace,Methyl ethyl ketone,Urine
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