The DOI matches its Crossref record; 30 of the 30 references it cites were found in a registry or an index.
Si:WO3 Sensors for Highly Selective Detection of Acetone for Easy Diagnosis of Diabetes by Breath Analysis
Abstract
Acetone in the human breath is an important marker for noninvasive diagnosis of diabetes. Here, novel chemo-resistive detectors have been developed that allow rapid measurement of ultralow acetone concentrations (down to 20 ppb) with high signal-to-noise ratio in ideal (dry air) and realistic (up to 90% RH) conditions. The detector films consist of (highly sensitive) pure and Si-doped WO(3) nanoparticles (10-13 nm in diameter) made in the gas phase and directly deposited onto interdigitated electrodes. Their sensing properties (selectivity, limit of detection, response, and recovery times) have been investigated as a function of operating temperature (325-500 degrees C), relative humidity (RH), and interfering analyte (ethanol or water vapor) concentration. It was found that Si-doping increases and stabilizes the acetone-selective epsilon-WO(3) phase while increasing its thermal stability and, thus, results in superior sensing performance with an optimum at about 10 mol % Si content. Furthermore, increasing the operation temperature decreased the detector response to water vapor, and above 400 degrees C, it was ( or=1800 ppb) can be clearly distinguished by a remarkable gap (40%) in sensor response. As a result, these solid state detectors may offer a portable and cost-effective alternative to more bulky systems for noninvasive diabetes detection by human breath analysis.
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Self-citationBreath acetone monitoring by portable Si:WO3 gas sensors
Righettoni, M., Tricoli, A., Gass, S., Schmid, A., Amann, A., & Pratsinis, S. E. (2012) · Analytica Chimica Acta · doi:10.1016/j.aca.2012.06.002 · Cited by 317
Self-citation
Metadata
- Authors
- Righettoni, M., Tricoli, A., & Pratsinis, S. E.
- Venue
- Analytical Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-04-12
- Volume
- 82
- Issue
- 9
- Pages
- 3581-3587
- ISSN
- 0003-2700 (ISSN-L)
- 1520-6882
- OpenAlex
- W2071124979
- Cited by
- 630
- References
- 30
- FWCI
- 15.45
- Type
- journal article
- Language
- en
- Open access
- closed
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