Dynamic determination of domestic liquefied petroleum gas down to several ppm levels using a Sr-doped SnO₂ thick film gas sensor

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• 作者：Liang-Dong Feng ; Xing-Jiu Huang and Yang-Kyu Choi
• 关键词：Key words ; Sr ; doped SnO2 sensor ; thick film ; LPG ; dynamic detection.
• 刊名：Microchimica Acta
• 出版年：2006
• 出版时间：December, 2006
• 年：2006
• 卷：156
• 期：3-4
• 页码：245-251
• 全文大小：392 KB

文摘

Sr-doped SnO₂ thick film gas sensors were prepared for domestic liquefied petroleum gas (LPG) determination down to several ppm levels using the screen-printing technique. Characterization of Sr-doped SnO₂ thick film was investigated by XRD, XPS and DTA-TGA analyses. The sensitivity, selectivity, sintering temperature, and static and dynamic measurement were investigated. The results showed that the Sr-doped SnO₂ thick film sensor is suitable for several ppm levels LPG determination because of the high sensitivity (S = 12.7 to 10 ppm LPG). The dynamic measurements showed that the sensor exhibited high sensitivity and selectivity to domestic LPG at 210–300 ¡ãC.