Search Results - "Arnaldo Alves Cardoso"

A Hyphenated Preconcentrator-Infrared-Hollow-Waveguide Sensor System for N2O Sensing by da Silveira Petruci, João Flavio, Wilk, Andreas, Cardoso, Arnaldo Alves, Mizaikoff, Boris

“…Following the Kyoto protocol, all signatory countries must provide an annual inventory of greenhouse-gas emission including N 2 O. This fact associated with…”
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A portable luminescent thermometer based on green up-conversion emission of Er3+/Yb3+ co-doped tellurite glass by Manzani, Danilo, Petruci, João Flávio da Silveira, Nigoghossian, Karina, Cardoso, Arnaldo Alves, Ribeiro, Sidney J. L.

“…The determination of temperature is essential in many applications in the biomedical, technological, and industrial fields. Optical thermometry appears to be…”
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Colorimetric paper-based device for gaseous hydrogen cyanide quantification based on absorbance measurements by Petruci, João Flávio da Silveira, Hauser, Peter C., Cardoso, Arnaldo Alves

“…•An optimized analytical method for gaseous HCN detection is presented.•Colorimetric reaction is performed on a microfluidic paper-based analytical device.•The…”
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Analysis of cassine and spectaline in the Senna spectabilis ethanolic extracts by capillary zone electrophoresis with indirect UV detection by Barbosa, Marilia Fontes, Pivatto, Marcos, Cardoso, Arnaldo Alves, Silveira Petruci, João Flávio

“…Introduction 2,6‐Disubstituted piperidin‐3‐ols are an important group of piperidine alkaloids found in species such as Senna spectabilis, whose main…”
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Online Analysis of H2S and SO2 via Advanced Mid-Infrared Gas Sensors by Petruci, João Flavio da Silveira, Wilk, Andreas, Cardoso, Arnaldo Alves, Mizaikoff, Boris

“…Volatile sulfur compounds (VSCs) are among the most prevalent emitted pollutants in urban and rural atmospheres. Mainly because of the versatility of sulfur…”
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A Micro-impinger Sampling Device for Determination of Atmospheric Nitrogen Dioxide by Filho, Juliano Passaretti, Costa, Maria Angélica Martins, Cardoso, Arnaldo Alves

“…There is an increasing demand for the determination of gaseous pollutants present in both outdoor and indoor environments. It is the result of a growing…”
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An Automated, Self-Powered, and Integrated Analytical Platform for On-Line and In Situ Air Quality Monitoring by da Silva Sousa, Danielle, Leal, Vanderli Garcia, dos Reis, Gustavo Trindade, da Silva, Sidnei Gonçalves, Cardoso, Arnaldo Alves, da Silveira Petruci, João Flávio

“…Air quality monitoring networks are challenging to implement due to the bulkiness and high prices of the standard instruments and the low accuracy of most of…”
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Construção e calibração de tubos de permeação by Cardoso, Arnaldo Alves, Locateli, Ana Flávia, Carloni Filho, João, Franco, Reinaldo

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Da escassez ao estresse do planeta: um século de mudanças no ciclo do nitrogênio by Garcia, Gabriel, Cardoso, Arnaldo Alves, Santos, Oalas Aparecido Morais dos

“…Heavy metals and pesticides are usually associated with the main problems humankind has created in the natural environment. However, compounds with…”
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Elementos traço em material particulado atmosférico de uma região agroindustrial do sudeste do Brasil by Oliveira, Patrícia Lopes de, Figueiredo, Bernardino Ribeiro, Cardoso, Arnaldo Alves, Angélica, Rômulo Simões

“…Trace element concentrations were measured in atmospheric particulate matter collected in 2009 and 2010, in a Brazilian region influenced by pre-harvest…”
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Ozonized oils: a qualitative and quantitative analysis by Guinesi, Adriana Simionatto, Andolfatto, Carolina, Bonetti Filho, Idomeo, Cardoso, Arnaldo Alves, Passaretti Filho, Juliano, Farac, Roberta Vieira

“…Most of the problems of endodontic origin have a bacterial etiological agent. Thus, there is a continued interest in seeking more effective chemical substances…”
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Exploratory study on sequestration of some essential metals by indigo carmine food dye by Zanoni, Thalita Boldrin, Cardoso, Arnaldo Alves, Zanoni, Maria Valnice Boldrin, Ferreira, Antonio Aparecido Pupim

“…Indigo carmine forms a stable complex with different ions, and the stability constant of the complexes were evaluated as log K equal to 5.75; 5.00; 4.89 and…”
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Real-Time and Simultaneous Monitoring of NO, NO2, and N2O Using Substrate–Integrated Hollow Waveguides Coupled to a Compact Fourier Transform Infrared (FT-IR) Spectrometer by Petruci, João Flávio da Silveira, Tütüncü, Erhan, Cardoso, Arnaldo Alves, Mizaikoff, Boris

“…Nitrogen-based fertilizers have been used in modern agricultural activities resulting in a relevant emission source of nitrogen gases into the atmosphere,…”
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Portable and Disposable Paper-Based Fluorescent Sensor for In Situ Gaseous Hydrogen Sulfide Determination in Near Real-Time by Petruci, João Flávio da Silveira, Cardoso, Arnaldo Alves

“…Hydrogen sulfide is found in many environments including sewage systems, petroleum extraction platforms, kraft paper mills, and exhaled breath, but its…”
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Absorbance detector for high performance liquid chromatography based on a deep-UV light-emitting diode at 235 nm by da Silveira Petruci, João Flavio, Liebetanz, Michael G., Cardoso, Arnaldo Alves, Hauser, Peter C.

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Real-Time and Simultaneous Monitoring of NO, NO 2 , and N 2 O Using Substrate-Integrated Hollow Waveguides Coupled to a Compact Fourier Transform Infrared (FT-IR) Spectrometer by Petruci, João Flávio da Silveira, Tütüncü, Erhan, Cardoso, Arnaldo Alves, Mizaikoff, Boris

“…Nitrogen-based fertilizers have been used in modern agricultural activities resulting in a relevant emission source of nitrogen gases into the atmosphere,…”
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Development of a simple method for determination of NO2 in air using digital scanner images by Passaretti Filho, Juliano, da Silveira Petruci, João Flávio, Cardoso, Arnaldo Alves

“…Nitrogen dioxide (NO2) is an important indicator of atmospheric pollution that is mainly derived from combustion processes. The gas is often present at…”
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Evaluation of the efficiency of a Venturi scrubber in particulate matter collection smaller than 2.5 µm emitted by biomass burning by Costa, Maria Angélica Martins, da Silva, Bruno Menezes, de Almeida, Sâmilla Gabriella Coelho, Felizardo, Marcos Paulo, Costa, Ana Flávia Martins, Cardoso, Arnaldo Alves, Dussán, Kelly Johana

“…Energy demand has increased worldwide, and biomass burning is one of the solutions most used by industries, especially in countries that have a great potential…”
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Colorimetric Determination of Sulfur Dioxide in Air Using a Droplet Collector of Malachite Green Solution by Milani, Márcio Raimundo, Gomes Neto, José Anchieta, Cardoso, Arnaldo Alves

“…The measurement of sulfur dioxide in air at the parts-per-billion level is described. The experimental arrangement consists of two optical fibers placed on…”
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New and Simple Visual Technique Based on Indigo Dye for Determination of Ozone in Ambient Air by Garcia, Gabriel, Allen, Andrew George, Cardoso, Arnaldo Alves

“…Episodes of pollution resulting from high concentrations of environmental ozone frequently occur in different parts of the world. The ozone can affect human…”
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