工作场所空气中多氯联苯类化合物的气相色谱-质谱测定法  

Method for determination of polychlorinated biphenyl in occupational atmospheres by gas chromatography-mass spectrometry

作　　者：王玉江[1] 黄传峰[2] 赵建忠[1] 于秋红[1] 闫慧芳[2] 刘裕婷[1] 杨大鹏[1] 

机构地区：[1]北京市丰台区疾病预防控制中心理化检验科,北京100071 [2]中国疾病预防控制中心职业卫生与中毒控制所

出　　处：《环境与健康杂志》2014年第3期259-261,共3页Journal of Environment and Health

基　　金：北京市科学技术委员会资助项目(Z111107056811042)

摘　　要：目的建立工作场所空气中多氯联苯类化合物的气相色谱-质谱（GC-MS）检测方法。方法空气中的多氯联苯用超细玻璃纤维滤膜采集，用正己烷和丙酮洗脱，经色谱柱分离，质谱检测器检测，以保留时间和特征离子定性，峰面积定量。结果空气中的多氯联苯在5—500ng／ml范围内有良好的线性关系，相关系数r=0．9994，最低检出浓度为0．11mg／m3（以采集15L空气样品计），批内精密度RSD为3．2％-4．9％，批间精密度RSD为4．4％～6．2％，加标回收率为91．6％～94．9％。结论该方法灵敏、准确，适用于工作场所空气中多氯联苯类化合物的测定。Objective To develop the method for determination of polychlorinated biphenyl （PCBs） in occupational atmosphere by gas chromatography-mass spectrometry （GC-MS）. Methods Polychlorinated biphenyl was absorbed by ultra-fine glass fiber filter and then desorbed by hexane and acetone and analyzed by GC-MS. Results PCBs in the range of 5-500 ng/ml had a good linear relationship, the correlation coefficient was 0.999 4, the minimum detectable concentration was 0.11 mg/m3 （15 L to collect air samples）, within run precision relative standard deviation was 3.2%-4.9%, between run precision relative standard deviation was 4.4%-6.2%, the recovery rate was 91.6%-94.9%. Conclusion The method is applicable to the determination of PCBs in the air of workplace.

关 键 词：多氯联苯 工作场所 空气 气相色谱-质谱 

分 类 号：O657.7[理学—分析化学]