Portable battery-powered flow injection analyser for volatile alcohols using semiconductor gas sensors

被引：8

作者：

DiBenedetto, LT

Alexander, PW

Hibbert, DB

机构：

[1] UNIV TASMANIA,DEPT PHYS SCI,LAUNCESTON,TAS 7250,AUSTRALIA

[2] UNIV NEW S WALES,DEPT ANALYT CHEM,SYDNEY,NSW 2052,AUSTRALIA

来源：

ANALYTICA CHIMICA ACTA | 1996年 / 321卷 / 01期

关键词：

sensors; flow injection; battery-powered FI analyser; tin-oxide semiconductor gas sensors; ethanol determination;

D O I：

10.1016/0003-2670(95)00564-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The response characteristics of Taguchi TGS812 and TGS824 type semiconductor gas sensors were evaluated for flow injection monitoring of alcohol concentrations in liquid samples. The detection method was based on the head space analysis of vapour above aqueous samples containing ethanol. A low cost, hand-held monitor has been developed for this application in which an air carrier stream is pumped through a twin sensor cell. Different sensitivities to aqueous ethanol samples were observed at each sensor. Analysis of commercial liquor samples such as beers, wines and liqueurs showed a correlation coefficient as high as 0.9999 in comparison with gas chromatography analysis. This system is therefore applicable as a portable, hand-held flow injection monitor for process control during production and for monitoring the quality of products containing ethanol.

引用

页码：61 / 67

页数：7

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