Evaluation of chemometric techniques for the identification and quantification of solvent mixtures using a thin-film metal oxide sensor array
✍ Scribed by A.D. Walmsley; S.J. Haswell; E. Metcalfe
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 629 KB
- Volume
- 250
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
An evaluation was made of stutable chemometnc techmques that can be used m both the selection of smtable sensors for a sensor array and the subsequent tdentixxtion and quantification of analytes usmg such a device Data from a thm-fii tm oxide-based gas sensor were obtamed for a range of analytes, both pure and m nuxtures and analysed umng several chemometnc techmques, mcludmg pnnclpal component analysis, cluster analysis and partlal least squares It was shown that the array produced a charactenstic response pattern for the analytes, and this was then used for the rdentlflcatlon of ethyl acetate, acetone, ethanol and pentane, and the d&-nation of ethanol m various nurtures The chemometnc techmques were not only used to tdentlfy and quantify components m the solvent nurture but also mdxated whxh of the array elements were actmg mdependently and the level of mteractlon which was occumng The results obtamed descnbe a chemometrtc and fabncatton protocol for sensor array design