کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10411062 | 894540 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Selectivity enhancement of metal oxide gas sensors using a micromachined gas chromatographic column
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
For this reason, a highly selective hybrid microsystem based on a gas chromatographic-like (GC) approach is proposed. In this miniaturized gas chromatographic system a solid state gas sensor is used as detector, together with a Silicon micromachined packed GC column, a zero grade air unit, a commercial minipump and a minivalve. With this prototype, Benzene, Toluene and m-Xylene eluted in synthetic or real indoor air were reliably detected and measured at concentrations as low as 5Â ppb. The use of chromatographic units together with solid state gas sensors both integrated in silicon allows to develop low-cost, handheld portable devices having exceptional selectivity and reproducibility. Possible applications which could benefit of these performances include security control, air quality monitoring as well as food quality control.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 105, Issue 2, 28 March 2005, Pages 400-406
Journal: Sensors and Actuators B: Chemical - Volume 105, Issue 2, 28 March 2005, Pages 400-406
نویسندگان
S. Zampolli, I. Elmi, J. Stürmann, S. Nicoletti, L. Dori, G.C. Cardinali,