Understanding the Potential of WO3 Based Sensors for Breath Analysis

被引：81
作者：
Staerz, Anna [1 ,2 ]
Weimar, Udo [1 ,2 ]
Barsan, Nicolae [1 ,2 ]
机构：
[1] Univ Tubingen, Inst Phys & Theoret Chem IPTC, Morgenstelle 15, D-72076 Tubingen, Germany
[2] Univ Tubingen, Ctr Light Matter Interact Sensors & Analyt LISA, Morgenstelle 15, D-72076 Tubingen, Germany
来源：
SENSORS | 2016年 / 16卷 / 11期
关键词：
WO3; breath analysis; gas sensors; SMOX based sensors; EXHALED NITRIC-OXIDE; TUNGSTEN-OXIDE; SENSING PROPERTIES; QUANTITATIVE-ANALYSIS; HYDROGEN-SULFIDE; GAS; ACETONE; NANOFIBERS; TOLUENE; HALITOSIS;
D O I：
10.3390/s16111815
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Tungsten trioxide is the second most commonly used semiconducting metal oxide in gas sensors. Semiconducting metal oxide (SMOX)-based sensors are small, robust, inexpensive and sensitive, making them highly attractive for handheld portable medical diagnostic detectors. WO3 is reported to show high sensor responses to several biomarkers found in breath, e.g., acetone, ammonia, carbon monoxide, hydrogen sulfide, toluene, and nitric oxide. Modern material science allows WO3 samples to be tailored to address certain sensing needs. Utilizing recent advances in breath sampling it will be possible in the future to test WO3-based sensors in application conditions and to compare the sensing results to those obtained using more expensive analytical methods.
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页数：16
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