A sensor array based on mass and capacitance transducers for the detection of adulterated gasolines

Wiziack, Nadja Karolina Leonel; Catini, Alexandro; Santonico, Marco; D’Amico, A.; Paolesse, Roberto; Paterno, Leonardo G.; Fonseca, Fernando Josepetti; Natale, Corrado Di

doi:10.1016/j.snb.2009.05.033

Cited by 29 publications

(16 citation statements)

References 22 publications

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“…Other important features mentioned in this work are long-term stability, high sensitivity and fast response time. Wiziack et al (Wiziack et al, 2009) used an array of eight capacitive polymeric sensors to discriminate gasoline, diesel, ethanol and some common fuel adulterants as toluene, hexane and water. These results depend on the polymeric material used as active layer and their interaction with organic volatile compounds.…”

Section: Fuel Analysis Based On Capacitance Changementioning

confidence: 99%

Analytical Methods for Determining Automotive Fuel Composition

Gruber¹,

Lippi²,

Li³

et al. 2011

New Trends and Developments in Automotive System Engineering

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Section: Fuel Analysis Based On Capacitance Changementioning

confidence: 99%

Analytical Methods for Determining Automotive Fuel Composition

Gruber¹,

Lippi²,

Li³

et al. 2011

New Trends and Developments in Automotive System Engineering

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“…As a starting point it is useful to use PCA to interpret the response of the sensor array, both to compare with previous approaches in the literature [30][31][32] as well as to compare with our SVM results. In PCA the aim is to describe the bulk of the variance of the data with a few eigenvectors of the covariance matrix, thus providing the best low-dimensional view of the problem.…”

Section: Array Characterizationmentioning

confidence: 99%

Efficient orthogonalization in gas sensor arrays using reciprocal kernel support vector regression

Dougherty

Beach

Morris

et al. 2010

Sensors and Actuators B: Chemical

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“…Alguns trabalhos são encontrados na literatura para este fim, que relatam: 1) O desenvolvimento e aplicação de dois tipos de narizes eletrônicos, um baseado em sensores piezoelétricos e outro baseado em sensores capacitivos, com polímeros condutores e metaloporfirinas como materiais sensoativos, utilizados simultaneamente para análise de combustíveis. Este trabalho foi publicado como fruto deste estudo, e será detalhado nos capítulos posteriores [51];…”

Section: -Gasolinaunclassified

“…A utilização simultânea de diferentes tecnologias de sensores tem sido demonstrada no passado [49,50] e é um método eficiente para aumentar o desempenho dos sistemas de sensores químicos. Entre as tecnologias disponíveis, transdutores de massa e capacitância são particularmente interessantes porque podem ser vantajosos também a partir de camadas sensoativas não condutivas, tais como a maioria dos mais interessantes sistemas de reconhecimento molecular [51].…”

Section: -Introduçãounclassified

Desenvolvimento de sistemas multissensoriais híbridos, língua e narizes eletrônicos para a avaliação de combustíveis.

Wiziack¹

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The simultaneous use of different sensor technologies is an efficient method to increase the performance of sensor systems. Aiming to contribute to a better quality control of Brazilian fuels, sensors were developed in this work to be used in electronic tongue and electronic noses. These multisensor systems were used separately and simultaneously integrating them to evaluation the quality of gasoline and ethanol. Thus, two types of multisensor hybrid systems were manufactured. The first system was composed by the integration of an Electronic Tongue (LE) and an Electronic Nose (NE), called SH-1. In this multisensor system, the electrical impedance of all the different sensors, based on nanostructured films of conducting polymers deposited on different gold microelectrodes, was measured simultaneously in both liquid and vapor fuel samples. The second multisensor hybrid system, SH-2, was composed by the union of two types of NEs and was fabricated by integrating sensors made from quartz microbalance and an array of capacitors, both functionalized with the same sensitive materials, conducting polymers and metalloporphyrins. The oscillation frequency of quartz crystal, and the capacitance of the array of capacitors were measured in the fuel vapor. These hybrid systems are easy to fabricate, simple to operate and sensitive to a wide variety of chemicals of interest. Tools for multivariate analysis were used for calibration and validation of the sensors, as well as for the interpretation of results.

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A sensor array based on mass and capacitance transducers for the detection of adulterated gasolines

Cited by 29 publications

References 22 publications

Analytical Methods for Determining Automotive Fuel Composition

Analytical Methods for Determining Automotive Fuel Composition

Efficient orthogonalization in gas sensor arrays using reciprocal kernel support vector regression

Desenvolvimento de sistemas multissensoriais híbridos, língua e narizes eletrônicos para a avaliação de combustíveis.

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