Ethanol interference in light alkane sensing by metal-oxide solid solutions

被引：11
作者：
Carotta, M. C. [1 ]
Cervi, A. [1 ,2 ]
Giberti, A. [1 ]
Guidi, V. [1 ,2 ]
Malagu, C. [1 ]
Martinelli, G. [1 ,2 ]
Puzzovio, D. [1 ,2 ]
机构：
[1] Univ Ferrara, Dept Phys, I-44100 Ferrara, Italy
[2] Ist Nazl Fis Nucl, Sect Ferrara, I-44100 Ferrara, Italy
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2009年 / 136卷 / 02期
关键词：
Metal-oxide chemoresistive sensors; Light alkane detection; Ethanol interference; Active carbon filtre; FILM GAS SENSORS; OXIDATIVE DEHYDROGENATION; BUTANE;
D O I：
10.1016/j.snb.2008.12.052
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A Study of the sensing properties of chemoresistive metal oxides vs. light alkanes has been undertaken under wet condition and in presence of ethanol. Screen-printed films of a solid solution of mixed Sri and Ti oxides have been selected for the purpose. We demonstrated that the films are capable of detecting 100 ppm of light alkanes or 500ppm of methane in wet condition, two concentration levels by far lower than their alarm thresholds, respectively. Ethanol is known to be a harmful interfering gas, though its concentration can be reduced to values lower than 10ppm by proper filtering. We show that, even in presence of 10 ppm of ethanol, the films steadily responded to alkanes. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：405 / 409
页数：5
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