工作场所空气中叔丁醇测定的溶剂解吸气相色谱法.pdfVIP

中华劳动卫生职业病杂志 2016 年 8 月第 34 卷第 8 期 Chin J Ind Hyg Occup Dis , Aug 2016 ,Vo 1.34 ,No.8 615 ·监测与检验技术· 工作场所空气中叔丁醇测定的溶剂解吸气相色谱法 李添姊刘奋谢玉璇陈剑辉 [摘要] 目的 建立工作场所空气中叔丁醇的榕剂解吸气相色谱测定方法。方法采用活性炭管采 集工作场所空气中叔丁醇，2%异丙醇-二硫化碳溶液解吸，经硝基对苯二甲酸改性的聚乙二醇(DB­ FFAP)毛细管色谱柱分离，火焰离子化检测器测定。结果该方法叔丁醇检出限为 0.2mg儿，定量下限为 0.6mgfL，线性范围为 oι2264.0 mgIL，最低定量浓度为 0.4 mglml{以采集l.5 L 空气样品计);该方法重 现性好，批内精密度为 2.8%-3.21j岛，批间精密度为 3.8%-5.7% ，解吸效率为 93.9%-98.1 % ，采样效率为 95.8%-1∞.0% ， I00mg 活性炭的穿透容量大于7.1 mg，样品在室温下至少可保存 14 d。结论该方法 适用于工作场所空气中叔丁醇的测定。 [关键词] 叔丁醇;工作场所;空气;色谱法，气相 Determination of tert-butyl alcohol in the air of the workplace by solvent desorption gas chromatography Li Tiandi , Liu Fen , Xie Yuxuan , Chen }imthui. Shenzhen Prevention and Treatment centerfor Occupational Diseases , Shenzhen 518001 , China [Abstract] Objective To establish solvent desorption gas chromatographic method for determination of tert-butyl alcohol in the air of the workplace. Methods After tert-butyl alcohol in the air of the workplace collected with activated carbon tube and desorbed with 2% 2-propanol in CS2 , and then sep缸ated with DB- FFAP capillary column and detected with flame ionization detector. Results ηle linearity ranges were 0.6- 2 264.0 mgIL. The limit of quantification was 0.6 mgIL. The determination has a good reproducibility. The intraassay and interassay precisions were 2.8%-3.29品 and 3.8%-5.7%. The desorption efficiencies were 93.9% -98 .1%. Absorption efficiencies were 95.8%-100.0%. The breakthrough volume was above 7.1 mg in l00mg activated carbon. The samples in activated carbon tube could be stored for at least 14 days at ambient temperature. Conclusion The method is feasible for determination of tert-butyl alcohol in the air of the workplace. [Keywords] Tert-butylalcohol; Workplace; Air; Chromatography ,gas 叔丁醇(tert-butyl alcoh