【摘要】 建立了固定污染源废气中丙烯腈的气袋采样-低温浓缩-气相色谱/质谱分析方法。结果表明,该法在丙烯腈质量浓度16.1~4 050μg/m~3范围内具有良好的线性,相关系数R~2>0.999,检出限为9.54μg/m~3,回收率、日内与日间精密度均符合质控要求,能够满足废气中丙烯腈分析的要求。更多还原

【Abstract】 This study established a method for the determination of acrylonitrile using cryogenic pre-concentration followed by GC/MS. The results showed that acrylonitrile was in good linearity within 16. 1 ~ 4 050 μg/m~3,and the correlation coefficient was larger than 0. 999. The detection limit was 9. 54 μg/m~3. Meanwhile,the average recovery,the with-in day and inter-day RSDs also met the requirements of quality control. The recoveries of spiked samples were between 86. 9% and 105. 3%,which were stable enough to realize extensive use.更多还原