2004
DOI: 10.1007/s00604-004-0291-6
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Chemical Sensors for Electronic Nose Systems

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Cited by 355 publications
(239 citation statements)
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“…Dilution was required to avoid sensor saturation and to ensure the minimum 2 % oxygen concentration for optimal operation of metal oxide gas sensors [27]. To avoid biogas sample contamination, sample was sent to the gas sensor array by placing the sample bag in a tight pressurized drum at around 0.1 bar.…”
Section: Monitoring With the E-nosementioning
confidence: 99%
“…Dilution was required to avoid sensor saturation and to ensure the minimum 2 % oxygen concentration for optimal operation of metal oxide gas sensors [27]. To avoid biogas sample contamination, sample was sent to the gas sensor array by placing the sample bag in a tight pressurized drum at around 0.1 bar.…”
Section: Monitoring With the E-nosementioning
confidence: 99%
“…Because of the lack of cost-efficient sensing technologies to provide an objective assessment on the strength and origin of odors it is currently difficult to localize smells and subsequently establish accountability for the culprit. In the past, odor quantification has been approached using electronic noses [2,3], which have used e.g., semiconducting metal oxides, conductive polymers, or piezoelectric materials as gas sensitive transducer [4]. Because of the poor selectivity of the basic gas sensing methods used in electronic noses, the use of pattern recognition schemes is necessary for many scenarios [5].…”
Section: Introductionmentioning
confidence: 99%
“…Uma alternativa estudada para a melhoria das propriedades dos sensores feitos a partir de óxidos metálicos foi a introdução de dopantes (ouro, platina, nióbio, crômio, ósmio, ferro) nos mesmos 5,15 . Entretanto, a descoberta da possibilidade de condução no poliacetileno (vide seção 1.2), que é um polímero conjugado, originou uma nova classe de materiais para serem utilizados nesses dispositivos.…”
Section: Sensores Químicos De Gases E Compostos Orgânicos Voláteisunclassified
“…Todo sensor químico é constituído por uma camada quimicamente seletiva, isto é, um material cuja função é interagir química ou fisicamente com o analito e gerar um sinal que possa ser usado para sua qualificação e/ ou quantificação 1,[5][6][7] .…”
Section: Sensores Químicosunclassified
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