【摘要】 目的建立工作场所空气中磷酸三苯酯(TPP)的气相色谱测定方法。方法工作场所空气中的TPP以玻璃纤维滤纸采样后,经乙醚解吸,HP-5气相色谱柱分离,火焰光度检测器检测。结果 TPP在质量浓度为12.50~800.00 mg/L时线性关系良好,相关系数为0.999 9;方法检出限为0.78 mg/L,最低检出浓度为0.09 mg/m3(以采样45 L计算);解吸效率为97.2%~99.4%;加标回收率为99.5%~100.3%;批内相对标准偏差(RSD)为2.7%~3.4%,批间RSD为1.4%~3.2%;采样效率为99.6%~100.0%。样品在室温下至少可保存14 d。结论本方法简便、准确、灵敏度高,适用于工作场所空气中TPP的测定。更多还原

【Abstract】 Objective To establish a method for detecting triphenyl phosphate( TPP) in the workplace air by gas chromatography. Methods TPP in the air of workplace was collected with glass fiber filter paper,desorbed with ether,separated by HP-5 gas chromatographic column,and detected by flame photometric detector. Results This method has good linear range of 12. 50-800. 00 mg/L,with the correlation coefficient of 0. 999 9. The detection limit was 0. 78 mg/L,and the minimum detectable concentration was 0. 09 mg/m3(sample volume was 45 L). Desorption efficiency was 97. 2%-99. 4%; standard recovery rate was 99. 5%-100. 3%. The within-run relative standard deviation( RSD) was 2. 7%-3. 4%and the between-run RSD was 1. 4%-3. 2%. The sampling efficiency was 99. 6%-100. 0%. The samples could be stored at room temperature for at least 14 days. Conclusion The method is simple,accurate and highly sensitive for detecting TPP in workplace air.更多还原