呼出气中甲苯的固相微萃取气相色谱测定法  

Determination of toluene in exhaled air by solid phase microextraction gas chromatography

作　　者：邹薇[1] 邱爱玲 张梦萍[1] 

机构地区：[1]山东省职业卫生与职业病防治研究院,山东济南250062 [2]南化集团研究院

出　　处：《环境与健康杂志》2014年第4期342-344,共3页Journal of Environment and Health

基　　金：山东省自然科学基金(ZR2011HL036)

摘　　要：目的建立呼出气中甲苯的固相微萃取-气相色谱测定方法。方法将呼出气中甲苯经固相微萃取头富集10 min,在150℃下解吸3 min,经FFAP弹性石英毛细管柱（30 m×0.54 mm,0.25μm）分离,FID检测器检测,以保留时间定性,峰面积定量。结果甲苯在0.173～56.713 mg/m^3线性范围内具有良好线性关系,回归方程为y=14.663x＋6.303 2,r=0.999 3。该方法的检出限为0.01mg/m^3,定量下限为0.03mg/m^3,平均回收率为89.4%～96.2%,RSD为4.1%～8.1%。现场共存物不干扰甲苯的测定。结论该方法具有操作简便快速、污染小、方法重现性好、线性范围宽等特点,适用于呼出气中甲苯的检测。Objective To estabish a method for the determination of toluene in exhaled air by solid phase microextraction gas chromatography. Methods The exhaled toluene was enriched for 10 min by solid phase microextraction head,then desorbed under 150 ℃ for 3 min and was determined with FID after complete separation with FFAP capillary column,and was qualified by retention time and quantified by peak area. Results This method presented a linear relation within 0.173-56.713 mg/m^3,the regression equation was y=14.663x＋6.303 2,r=0.999 3. The limit of detection was 0.01 mg/m^3and quantitative limit was 0.03mg/m^3. Desorption efficiencies were 89.4%-96.2%,RSDs were 4.1%-8.1%. The coexistence content didn＇t interfere with the determination of toluene. Conclusion This method is fast,simple,with good reproducibility and less pollution, and is applicable to the determination of toluene in exhaled air.

关 键 词：呼出气 甲苯 固相微萃取 色谱法 气相 

分 类 号：O657.6[理学—分析化学]