工作场所空气中丙烯腈含量的二次热解吸-毛细管气相色谱法测定  

Determination on acrylonitrile in workplace air by two-stage thermal desorption-capillary gas chromatography

作　　者：康译友[1] 王宏伟[1] 宋月[1] KANG Yi-you;WANG Hong-wei;SONG Yue(Dalian City Center for Disease Control and Prevention,Dalian,Liaoning,116021,China)

机构地区：[1]大连市疾病预防控制中心理化技术检验科,辽宁大连116021

出　　处：《预防医学论坛》2022年第2期143-144,148,共3页Preventive Medicine Tribune

摘　　要：目的建立二次热解吸-毛细管气相色谱测定工作场所空气中丙烯腈的方法。方法采用PerkinElmer Tenax TA吸附管采样,二次热解吸后进样,经毛细管色谱柱分离,氢火焰离子化检测器检测,以保留时间定性,峰面积定量。结果以采集1.5 L空气样品计,丙烯腈的线性范围为0.04~8.60 mg/m^(3),检出限0.05×10^(-1) mg/m^(3);回归方程相关系数0.9997;RSD为4.10%~5.48%(n=6);解吸效率为98.87%~104.06%;穿透容量>1.60 mg。结论该方法适用于工作场所空气中丙烯腈的有效分离和准确测定。Objective To establish a two-stage thermal desorption-capillary gas chromatography method for determination of acrylonitrile in workplace air.Methods The samples were collected with PerkinElmer Tenax TA adsorption tubes,desorbed and analyzed by two-stage thermal desorption capillary gas chromatography,and measured by flame ionization detector,qualified by retention time and quantified by peak area.Results The linear ranges was 0.04-8.60 mg/m^(3)(the sample volume was 1.5 L),and the limit of detection was 0.05×10^(-1) mg/m^(3);the correlation coefficient was 0.9997 and the relative standard deviation was 4.10%-5.48%(n=6),and the desorption efficiency was in the range of 98.87%-104.06%.The break through capacity was greater than 1.60 mg.Conclusion This method is sensitive,accurate and applicable for the separation and determination of acrylonitrile in workplace air.

关 键 词：工作场所空气 丙烯腈 二次热解吸-气相色谱法 含量测定 Tenax TA吸附管 

分 类 号：R134.4[医药卫生—劳动卫生]