Application of selected ion flow tube mass spectrometry to real-time atmospheric monitoring
Application of selected ion flow tube mass spectrometry to real-time atmospheric monitoring
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DOI：
10.1002/rcm.4574
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发表时间：
2010-06-01
影响因子：
2
通讯作者：
McEwan, Murray J.
中科院分区：
文献类型：
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作者：
Prince, Barry J.;Milligan, Daniel B.;McEwan, Murray J.
介绍了利用选择离子流动管质谱(SIFT-MS)技术对大气中挥发性有机化合物(VOCs)进行实时监测的数据。这些测量是由新一代SIFT-MS仪器之一进行的。结果显示，在4天的时间里，从固定采样点连续监测了五种VOCs：乙烯、乙醇、1，3-丁二烯、苯和甲苯。除乙烯外，研究中的所有分析物至少有两个同时和独立的浓度测量。这些结果显示了近年来在SIFT-MS方面取得的巨大进展。1，3-丁二烯在9PPTV浓度下测定，精密度为44%。对于1-S积分时间，获得了50 PPTV的检测下限。报告了所有五种分析物的仪器灵敏度。版权所有(C)2010 John Wiley&Sons，Ltd.
Data are presented for real-time atmospheric monitoring of volatile organic chemicals (VOCs) in air using selected ion flow tube mass spectrometry (SIFT-MS) technology. These measurements were made by one of the new generation of SIFT-MS instruments. Results are shown for five VOCs that were continually monitored from a stationary sampling point over a 4-day period: ethene, ethanol, 1,3-butadiene, benzene and toluene. All analytes except ethene in the study have at least two simultaneous and independent measures of concentration. These results demonstrate the great advances in SIFT-MS that have been made in recent years. 1,3-Butadiene is measured at a concentration of 9 pptv with a precision of 44%. For a 1-s integration time, a detection limit of 50 pptv is achieved. Instrument sensitivities are reported for all five analytes. Copyright (C) 2010 John Wiley & Sons, Ltd.