工作场所空气中二乙氧基甲烷的气相色谱法研究因素分析  

Study on determination of ethylal in workplace air by gas chromatography

作　　者：凌伟洁[1] 戎伟丰[2] 陈培仙 唐侍豪 徐绍雄 张海[1] 刘移民[1] Ling Weijie;Rong Weifeng;Chen Peixian;Tang Shihao;Xu Shaoxiong;Zhang Hai;Liu Yimin(Guangzhou Prevention and Treatment Center for Occupational Diseases, Guangzhou 510620, China)

机构地区：[1]广州市第十二人民医院,510620 [2]广东省职业病防治院

出　　处：《中华劳动卫生职业病杂志》2018年第6期471-473,共3页Chinese Journal of Industrial Hygiene and Occupational Diseases

基　　金：广州市医药卫生科技项目（20171A010284）;广州市职业环境与健康效应重点实验室建设专项（2014SY000020）;广州市“121人才梯队工程”后备人才项目;广东省“十二五”医学重点专科项目（粤卫函[2012]20号）;广州市医学重点学科建设项目（穗卫科[2013]21号）;广州市民生科技重大项目（2014Y2-00067）

摘　　要：目的建立工作场所空气中二乙氧基甲烷的溶剂解吸-气相色谱测定方法。方法空气中二乙氧基甲烷经活性炭管采集，二硫化碳解吸，毛细管色谱柱分离，氢火焰离子化检测器检测。结果本方法二乙氧基甲烷质量浓度在0．87—34800．00mg／L线性关系良好，相关系数为0．9997，检出限和定量下限分别为0．25mg／L和0．90mg／L，最低检出质量浓度和最低定量质量浓度分别为0．17、0．60mg／m^3（以采集1．5L空气计）。批内、批间精密度相对标准偏差（RSD）分别为2．93％～6．20％和3．67％～6．44％，平均解吸效率为94．22％～97．27％，样品在室温下至少可保存7d。结论本方法可用于监测工作场所空气中二乙氧基甲烷的水平。Objective A solvent desorption-gas chromatography method for determination of ethylal in workplace air has been established. Methods Ethylal in workplace air was collected by activated carbon tube and desorbed with carbon disulfide, and the desorption solutions were analysed by capillary column GC with FID detector. Results The method presented a good linearity in the range of 0.87~34 800.00 mg/L of ethylal in the standard solution, with the correlation coefficient being r=0.999 7. The limit of detection and the limit of quantification of this method were respectively 0.20 mg/L and 0.80 mg/L, and the minimum detectable concentration and the minimum quantification concentration of this method were respectively 0.17 mg/m^3 and 0.60 mg/m^3 per 1.50 L of air.The within-run precision of the method was 2.93%-6.20%, and the between-run precision 3.67%-6.44%. The desorption efficiency between 94.22%-97.27%. Ethylal in activated carbon tube could be kept at least 7 days at room temperature without significant loss. Conclusion The method could be used for determination of ethylal in workplace air.

关 键 词：二乙氧基甲烷 工作场所 空气 溶剂解吸 气相色谱法 

分 类 号：O657.71[理学—分析化学] R134.4[理学—化学]