Search Results - "Manuel Castro Carneiro"

Hydrofluoric Acid‐Free Digestion of Geological Samples for the Quantification of Rare Earth Elements by Inductively Coupled Plasma‐Optical Emission Spectrometry by Bezerra de Oliveira, Andrey Linhares, Afonso, Júlio Carlos, Silva, Lilian, Alcover Neto, Arnaldo, Castro Carneiro, Manuel, Dias da Silva, Lílian Irene, Couto Monteiro, Maria Inês

“…Rare earth elements (REEs) are very important to technological development as well as to geochemical and environmental studies. In this work, hydrofluoric acid…”
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Anthropogenic Perturbations to the Atmospheric Molybdenum Cycle by Wong, Michelle Y., Rathod, Sagar D., Marino, Roxanne, Li, Longlei, Howarth, Robert W., Alastuey, Andres, Alaimo, Maria Grazia, Barraza, Francisco, Carneiro, Manuel Castro, Chellam, Shankararaman, Chen, Yu‐Cheng, Cohen, David D., Connelly, David, Dongarra, Gaetano, Gómez, Darió, Hand, Jenny, Harrison, R. M., Hopke, Philip K., Hueglin, Christoph, Kuang, Yuan‐wen, Lambert, Fabrice, Liang, James, Losno, Remi, Maenhaut, Willy, Milando, Chad, Monteiro, Maria Inês Couto, Morera‐Gómez, Yasser, Querol, Xavier, Rodríguez, Sergio, Smichowski, Patricia, Varrica, Daniela, Xiao, Yi‐hua, Xu, Yangjunjie, Mahowald, Natalie M.

“…Molybdenum (Mo) is a key cofactor in enzymes used for nitrogen (N) fixation and nitrate reduction, and the low availability of Mo can constrain N inputs,…”
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Impact of the Analytical Blank in the Uncertainty Evaluation of the Copper Content in Waters by Flame Atomic Absorption Spectrometry by DE OLIVEIRA, Elcio Cruz, COUTO MONTEIRO, Maria Inês, MARINHO PONTES, Fernanda Veronesi, DE ALMEIDA, Marcelo Dominguez, CASTRO CARNEIRO, Manuel, DA SILVA, Lílian Irene Dias, ALCOVER NETO, Arnaldo

“…Chemical analysts use analytical blanks in their analyses, but seldom is this source of uncertainty evaluated. Generally, there is great confusion. Although…”
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Traffic and catalytic converter – Related atmospheric contamination in the metropolitan region of the city of Rio de Janeiro, Brazil by da Silva, Lílian Irene Dias, de Souza Sarkis, Jorge Eduardo, Zotin, Fátima Maria Zanon, Carneiro, Manuel Castro, Neto, Arnaldo Alcover, da Silva, Alzira dos Santos Amaral Gomes, Cardoso, Mauri José Baldini, Monteiro, Maria Inês Couto

“…In this work, 24-h PM 10 samples were collected in Rio de Janeiro, Brazil, and analysed for trace elements (Cd, Ce, Cu, La, Mo, Ni, Pb, Pd, Rh, Sb and Sn). The…”
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Evaluation of the chromium bioavailability in tanned leather shavings using the SM&T sequential extractions scheme by Irene Dias da Silva, Lílian, Veronesi Marinho Pontes, Fernanda, Castro Carneiro, Manuel, Inês Couto Monteiro, Maria, Dominguez de Almeida, Marcelo, Alcover Neto, Arnaldo

“…Tanned leather shavings from Brazilian tanneries were analysed in order to assess the chromium extractability and bioavailability, and consequently its…”
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A novel method for leaching rare earth element from fluorescent lamp waste via acid fusion by Vaz, Guilherme Vieira, Pontes, Fernanda Veronesi Marinho, Salgado, Lucas André Bezerra, Carneiro, Manuel Castro, Paulino, Jéssica Frontino

“…Spent fluorescent lamps are alternatives to primary sources of rare earth elements. For recycling, the most common hydrometallurgical processes involve…”
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Comparação de métodos convencional e alternativo para determinação de sódio, potássio e fósforo em extratos de solos obtidos com solução de mehlich-1 by Ricardo Soares, Viviane Escaleira, David Vilas Boas de Campos, Maria Inês Couto Monteiro, Manuel Castro Carneiro, Ricardo Erthal Santelli, Alberto Carlos de Campos Bernardi

“…Foram comparadas as concentrações de Na, K e P em extratos de solos, obtidas por um método de extração convencional, no qual é utilizada uma razão…”
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Fast and Greener Ultrasound-Assisted Acid Extraction for the Determination of Potentially Toxic Elements in Fluorescent Lamp Waste Using ICP OES by Duarte, Vitor Busto, Gonçalves, Felippe Ceraso, Guimarães, Júlia Concordido, Braz, Bernardo Ferreira, Carneiro, Manuel Castro, Santelli, Ricardo Erthal, Paulino, Jéssica Frontino, Pontes, Fernanda Veronesi Marinho

“…Understanding the chemical composition of fluorescent lamp residue, particularly potentially toxic elements, is crucial for reducing environmental impacts and…”
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Evaluation of bioaccessible heavy metal fractions in PM10 from the metropolitan region of Rio de Janeiro city, Brazil, using a simulated lung fluid by da Silva, Lílian Irene Dias, Yokoyama, Lídia, Maia, Lucas Barros, Monteiro, Maria Inês Couto, Pontes, Fernanda Veronesi Marinho, Carneiro, Manuel Castro, Neto, Arnaldo Alcover

“…Bioaccessibility studies are important for the estimation of the potential effects on human health caused by metals present in inhalable airborne particulate…”
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Ultrasound-assisted purge-and-trap extraction for simultaneous determination of low-molecular weight amines and ammonium in high salinity waters by ion chromatography by Ferreira, Fernanda Nunes, Afonso, Julio Carlos, Pontes, Fernanda Veronesi Marinho, Carneiro, Manuel Castro, Neto, Arnaldo Alcover, Junior, Rainério Escalfoni, Monteiro, Maria Inês Couto

“…Direct determination of ammonium and amines in high salinity water samples by ion chromatography using conductivity detection is impossible due to the presence…”
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Determination of low-molecular-weight amines and ammonium in saline waters by ion chromatography after their extraction by steam distillation by Ferreira, Fernanda Nunes, Afonso, Julio Carlos, Pontes, Fernanda Veronesi Marinho, Carneiro, Manuel Castro, Neto, Arnaldo Alcover, Tristão, Maria Luiza Bragança, Monteiro, Maria Inês Couto

“…A new method was developed for the determination of ammonium ion, monomethylamine and monoethylamine in saline waters by ion chromatography. Steam distillation…”
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Determination of low-molecular-weight amines and ammonium in saline waters by ion chromatography after their extraction by steam distillation: Liquid Chromatography by Ferreira, Fernanda Nunes, Afonso, Julio Carlos, Pontes, Fernanda Veronesi Marinho, Carneiro, Manuel Castro, Neto, Arnaldo Alcover, Tristão, Maria Luiza Bragança, Monteiro, Maria Inês Couto

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Determinação das formas de nitrogênio e nitrogênio total em rochas-reservatório de petróleo por destilação com arraste de vapor e método do indofenol by Silva, Lílian Irene Dias da, Carneiro, Manuel Castro, Emídio, Vanessa dos Santos, Henrique Junior, Sérgio de Souza, Monteiro, Maria Inês Couto

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Comparação de métodos convencional e alternativo para determinação de sódio, potássio e fósforo em extratos de solos obtidos com solução de mehlich-1 by Soares, Ricardo, Escaleira, Viviane, Campos, David Vilas Boas de, Monteiro, Maria Inês Couto, Carneiro, Manuel Castro, Santelli, Ricardo Erthal, Bernardi, Alberto Carlos de Campos

“…Foram comparadas as concentrações de Na, K e P em extratos de solos, obtidas por um método de extração convencional, no qual é utilizada uma razão…”
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Simultaneous speciation of chromium by spectrophotometry and multicomponent analysis by Soares, Ricardo, Castro Carneiroa, Manuel, Inês Couto Monteiro, Maria, de Souza Henrique Junior, Sérgio, Veronesi Marinho Pontes, Fernanda, Irene Dias da Silva, Lílian, Alcover Neto, Arnaldo, Erthal Santelli, Ricardo

“…A simple, fast and sensitive spectrophotometric method for the simultaneous determination of Cr(III) and Cr(VI) in effluents and contaminated waters using a…”
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