摘要
建立了便携式顶空-气相色谱-质谱(HS-GC/MS)、台式HS-GC/MS和台式吹扫捕集-气相色谱-质谱(P&T-GC/MS)3种方法测定水中22种挥发性有机物(VOCs)。通过测定模拟水样中的VOCs,比较了3种方法测定结果的准确度、精密度和检出限。实验结果表明,台式HS-GC/MS和台式P&T-GC/MS测定结果的准确度高、精密度好。与前两种方法相比,便携式HS-GC/MS测定结果的准确度和精密度相对逊色,但其检出限较低,能够满足应急监测工作的需要。
The methods for portable and bench-top gas chromatography and mass spectrometry （GC/MS） were established to analyze 22 kinds of volatile organic compounds （VOCs） in water.Portable headspace HS-GC/MS,bench-top HS-GC/MS and bench-top purge and trap （P＆T）-GC/MS were employed to determine the VOCs in water.The analytic precision,accuracy and limit of detection of three methods were compared.The results show that the bench-top HS-GC/MS and bench-top P＆T-GC/MS have excellent precision and accuracy,while the portable HS-GC/MS has lower limit of detection,which can meet the needs for emergency monitoring.
出处
《质谱学报》
EI
CAS
CSCD
北大核心
2014年第2期179-184,共6页
Journal of Chinese Mass Spectrometry Society
