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

Autor(es)

Peres, Laura O. ^[1] ; Li, Rosamaria W. C. ^[2] ; Yamauchi, Elaine Y. ^[2] ; Lippi, Renata ^[2] ; Gruber, Jonas ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Diadema, SP - Brazil

^[2] Univ Sao Paulo, Inst Quim, BR-05513970 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Food Chemistry; v. 130, n. 4, p. 1105-1107, FEB 15 2012.
• Citações Web of Science: 32

Resumo

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)

• Processo FAPESP: 06/59464-2 - Desenvolvimento de sensores para avaliação de poluentes tóxicos presentes no ar de ambientes internos
• Beneficiário: Rosamaria Wu Chia Li
• Modalidade de apoio: Auxílio à Pesquisa - Programa Primeiros Projetos