摘要
建立饮用水中55种挥发性有机物的吹扫捕集气相色谱质谱分析方法。采用吹扫捕集法对饮用水55种挥发性有机物进行富集,热解吸后导入气相色谱-质谱仪,并选用选择离子模式(SIM)进行检测。其回收率在87.90%~118.03%,其中40种化合物的两个水平回收率均在90%~110.0%范围;相对标准偏差均小于10%;进样量为5 m L时,方法的定量下限(LOQ)范围为0.006μg/L^0.123μg/L(S/N=10)。该方法且具有富集效率高、无试剂再污染等特点,适用饮用水中55种挥发性化合物的分析测定。
The analytical method for determining 55 volatile organic compounds （VOCs） in water was estab-lished by purge and trap gas chromatography/mass spectrometry（P＆amp;T-GC/MS）. The suitable method with high enrichment efficiency and no reagent re contamination for determination of 55 VOCs in water was obtained using the following optimized procedure：enriching the 55 VOCs with purge-and-trap methods, thermal desorption, 5 mL injection volume, and finally determining VOCs by gas chromatography/mass spectrometry with selection ion mode （SIM）. The recovery rate of 55 VOCs ranged from 87.90 % to 118.03 %,and 40 of the 55 VOCs ranged from 90.0%to 110.0%, with the relative standard deviations（RSDs） were less than 10%. The limits of quantification（LOQ） of the method were between 0.006μg/L to 0.123μg/L（Signal/Noise=10）.
作者
周静峰
施家威
何雄
ZHOU Jing-feng SHI Jia-wei HE Xiong(College of Food , Zhejiang Pharmaceutical College, Ningbo 315000, Zhejiang, China Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315000, Zhejiang, China)
出处
《食品研究与开发》
CAS
北大核心
2017年第7期138-143,共6页
Food Research and Development
关键词
吹扫捕集气相色谱-质谱法
离子模式
挥发性有机物
purge and trap gas chromatography/mass spectrometry
selection ion mode
volatile organic compound
