空气中丁二烯的毛细管气相色谱测定法  

Determination of butadiene in air of workplace by gas chromatography

作　　者：焦燕妮[1] 陈金东[1] 张霞[1] 程学美[1] 单宝德[1] 

机构地区：[1]山东省疾病预防控制中心理化所,山东济南250014

出　　处：《环境与健康杂志》2013年第1期64-66,共3页Journal of Environment and Health

基　　金：山东省医药卫生研究项目(2009HZ050)

摘　　要：目的建立工作场所空气中丁二烯的溶剂解吸、毛细管气相色谱测定方法。方法以活性炭管吸附空气中丁二烯，用二氯甲烷解吸，毛细管色谱柱分析，FID检测器检测。结果空气中丁二烯的浓度在0．1～4．0mg／m3（以采集100L空气样品计，相当于丁二烯标准溶液浓度10～400μg／ml）时，回归方程y=0．898x-2．06，相关系数为0．9997，最低检出限为0．6μg／ml，最低检测质量浓度为6μg／m3（以采集100L空气样品计）。平均解吸效率为93．2％，样品在4℃下可保存3d。结论该方法采样方便，测定灵敏、准确，适用于工作场所空气中丁二烯的浓度测定。Objective To establish a gas chromatography method for the determination of butadiene in the air of workplace by solvent desorption. Methods Butadiene in the air was adsorbed by active carbon tube, and dichloromethane was used for solvent desorption , then the sample was analyzed by GC （FID） with capillary column. Results The linear regression equation was y=0.898x-2.06,at the target concentration of 0.1-4.0 mg/m3 in air（r=0.999 7）. The detection limit was 0.6 μg/ml. The average desorption efficiency was 93.2%. Active carbon tube sampling butadiene tightly closed could be stored for three days at 4 ~C and the resuhs still remained stable. Conclusion This method is simple, sensitive, accurate and applicable to the determination of butadiene in the air of workplace.

关 键 词：丁二烯 色谱法 气相 工作场所 空气 溶剂解吸 

分 类 号：O657.7[理学—分析化学]