Rapid hydrocarbon analysis using a miniature rectilinear ion trap mass spectrometer.
Rapid hydrocarbon analysis using a miniature rectilinear ion trap mass spectrometer.
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使用微型直线离子阱质谱仪进行快速碳氢化合物分析。
DOI：
10.1039/b805813j
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
R. Cooks
中科院分区：
文献类型：
--
作者：
E. Sokol;K. Edwards;K. Qian;R. Cooks
将微型离子陷阱质谱仪应用于气相和水溶液中痕量碳氢化合物和简单杂原子的分析。丙酮、醋酸、乙腈、苯、丁硫醇、二硫化碳、己烷、二氯甲烷、萘、甲苯和二甲苯的蒸气被检测和定量，在某些情况下，通过膜界面的通道。用膜界面研究了苯、甲苯、二甲苯、正己烷和一种石油石脑油馏分的水溶液。所有化合物的采样、检测和鉴定在不到一分钟的时间内完成。甲苯和苯的气相样品的检测限分别为200ppt和600ppt。水溶液中苯和二甲苯的检出限分别为200 ppb和400 ppb。在水相样品的两个数量级和气相样品的三个数量级的线性动态范围内进行了定量。
A miniature ion trap mass analyzer was applied to the analysis of traces of hydrocarbons and simple heteroatomics in the vapor phase and in aqueous solution. Vapors of acetone, acetic acid, acetonitrile, benzene, butanethiol, carbon disulfide, hexane, dichloromethane, naphthalene, toluene and xylenes were detected and quantified using solid sorbent trapping and, in some cases, by passage through a membrane interface. Aqueous solutions of benzene, toluene, xylenes, hexane and a petroleum naphtha distillate were examined using the membrane interface. Sampling, detection and identification of all compounds was completed in times of less than one minute. The gas-phase samples of toluene and benzene were detected at 200 ppt (limit of detection, LOD) for toluene and 600 ppt for benzene. Identification of benzene and xylene in aqueous solutions was readily achieved with LODs of 200 and 400 ppb, respectively. Quantification over a linear dynamic range of two orders of magnitude for the aqueous samples and three orders of magnitude for the vapor-phase samples was demonstrated.