Detection of Contrabands in Cargo Containers Using a High-Speed Gas Chromatograph with Surface Acoustic Wave Sensor
Detection of Contrabands in Cargo Containers Using a High-Speed Gas Chromatograph with Surface Acoustic Wave Sensor
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使用带有表面声波传感器的高速气相色谱仪检测货物集装箱中的违禁品
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
S. Viswanathan
中科院分区：
文献类型：
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作者：
E. Staples;S. Viswanathan
描述了一种用于货物集装箱的便携式化学分析系统，该系统使用单个无涂层高 Q 表面声波传感器以及高速色谱仪和色谱柱、可编程门阵列微处理器和蒸气预浓缩器。该装置在 20 秒内或近乎实时地以皮克级灵敏度提供可能包含数百种不同化学物质的特定蒸汽混合物（香料）的 N 维空间（其中 N 等于传感器数量）中可识别的视觉矢量图像。这种基于快速色谱的新方法将技术与采样系统相结合，经证明可以解决复杂的违禁品检测和测量问题，检测概率等于或大于 90%，误报率为 1%。
A portable chemical profiling system for cargo containers using a single, uncoated, high Q surface acoustic wave sensor, along with a high-speed chromatograph and column, a programmable gate array microprocessor, and a vapor preconcentrator, is described. This unit provides a recognizable visual vectorial image in N-dimensional space (where N equals the number of sensors) of specific vapor mixtures (fragrances) containing possibly hundreds of different chemical species in 20 s or near real time with picogram sensitivity. This new approach, based upon fast chromatography, which combines the technology with sampling system is proven to solve complex contraband detection and measurement problems with the probability of detection equal to or greater than 90% with a false alarm rate of 1%.