溶剂解吸-气相色谱法测定空气中的氯丙烯

发布时间：2018-05-25 16:27

本文选题：氯丙烯 + 溶剂解吸　；参考：《中国卫生检验杂志》2016年08期

【摘要】：目的建立工作场所空气中氯丙烯的溶剂解吸-气相色谱法。方法用溶剂解吸型活性炭管采集工作场所中氯丙烯,经二氯甲烷解吸后,经RTX-WAX弹性毛细管色谱柱分离,氢火焰离子化监测器(FID)检测,保留时间定性,外标法定量。结果氯丙烯在一定浓度范围内线性关系良好,相关系数(r)为0.999 9,检出限和最低检出浓度分别为0.20μg/ml和0.03 mg/m~3(采集7.5 L空气计),批内、批间精密度分别为0.8%~3.6%和2.2%~3.6%,采样效率均为100.0%,解吸效率为96.2%~97.5%,氯丙烯在常温下保存可稳定7 d。结论本方法可长时间采样,采样携带方便,解吸效率和灵敏度高,精密度好,样品保存时间长,操作方法简便。所有指标均符合《工作场所空气中毒物检测方法的研制规范》中的要求。适用于工作场所空气中氯丙烯的采样与测定。
[Abstract]:Objective to establish a solvent desorption-gas chromatography for chloropropene in workplace air. Methods Chloropropene was collected from workplace by solvent desorption activated carbon tube, then desorbed by dichloromethane, separated by RTX-WAX capillary column, detected by hydrogen flame ionization monitor (FID), qualitatively determined by retention time and quantified by external standard method. Results the linear relationship of chloropropene in certain concentration range was good, the correlation coefficient was 0.999, the detection limit and the lowest detection concentration were 0.20 渭 g/ml and 0.03 mg / m ~ (-3), respectively. The precision between batches was 0.8% and 2.2% respectively. The sampling efficiency was 100.0. the desorption efficiency was 96.27.5.The propylene chloride could be kept at room temperature for 7 days. Conclusion this method can be used for long time sampling, convenient sampling, high desorption efficiency and sensitivity, good precision, long sample preservation time and simple operation. All the indexes are in accordance with the requirements of the Code for the Development of a method for the Detection of Poison in the Air of the Workplace. Suitable for sampling and determination of chloropropene in workplace air.
【作者单位】：宁夏疾病预防控制中心;江苏省疾病预防控制中心;
【基金】：江苏省医学领军人才项目(LJ201130)
【分类号】：R134.4;O657.71

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