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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Conductive polymer gas sensor for quantitative detection of methanol in Brazilian sugar-cane spirit

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Author(s):
Peres, Laura O. [1] ; Li, Rosamaria W. C. [2] ; Yamauchi, Elaine Y. [2] ; Lippi, Renata [2] ; Gruber, Jonas [2]
Total Authors: 5
Affiliation:
[1] Univ Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Diadema, SP - Brazil
[2] Univ Sao Paulo, Inst Quim, BR-05513970 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Food Chemistry; v. 130, n. 4, p. 1105-1107, FEB 15 2012.
Web of Science Citations: 32
Abstract

A low-cost chemiresistive gas sensor is described, made by the deposition of a thin film of a conductive polymer, poly(2-dodecanoylsulfanyl-p-phenylenevinylene), doped with dodecylbenzenesulfonic acid (10%, w/w), onto interdigitated electrodes. The sensor exhibits linear electrical conductance changes in function of the concentration of methanol present in sugar-cane spirit in the range between 0.05% and 4.0%. Since the sensor is cheap, easy to fabricate, durable, presents low power consumption, and is not sensitive to ethanol, acetic acid or water, it can be used in portable equipments for monitoring methanol levels in distilled alcoholic beverages such as Brazilian sugar-cane spirit (cachaca). (C) 2011 Elsevier Ltd. All rights reserved. (AU)