Performance evaluation of a surface acoustic wave analyzer to measure VOCs in air and water
Performance evaluation of a surface acoustic wave analyzer to measure VOCs in air and water
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DOI：
10.1002/ep.670220320
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发表时间：
2003-10-01
期刊：
影响因子：
--
通讯作者：
Viswanathan, S
中科院分区：
文献类型：
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作者：
Watson, GW;Staples, EJ;Viswanathan, S
本文对装有表面声波检测器的快速气相色谱仪的性能进行了评价。该仪器是为快速分析空气或水中挥发性有机化合物而研制的。SAW检测器是第一个也是唯一已知的气相色谱仪（GC）积分检测器，通过响应出气相色谱柱的物质质量来工作。附着在SAW表面的材料改变了它的工作频率，由系统电子检测到并转换成色谱图。该系统不需要高电压或放射性电离源，结构紧凑，便于携带。探测器的毫秒级响应允许进行高速分析（以秒为单位测量）。GC/SAW系统的性能在检测极限、精度、准确度和干扰方面与实验室GC相当，同时基本上实时（10秒）筛选环境。介绍了该仪器对空气和水基质中10种常见有机化合物的评价结果。
The performance of a fast gas chromatograph equipped with a Surface Acoustic Wave (SAW) detector is evaluated in this paper. The instrument was developed for the rapid analysis of volatile organic compounds in air or water. The SAW detector, the first and only known integrating detector for gas chromatographs (GCs), operates by responding to the mass of material exiting the GC column. Material adhering to the SAW surface changes its operating frequency, which is detected by the system electronics and converted into a chromatogram. The system requires no high voltages or radioactive ionization sources, and is compact and portable. The millisecond response of the detector allows high speed analysis-measured in seconds-to take place. The performance of the GC/SAW system is comparable to laboratory GCs in terms of limit of detection, precision, accuracy, and interference while screening environments in essentially real time (10 seconds). The results of the instrument evaluation for 10 common organic compounds in air and water matrices are presented.