Search Results - "Raposo, Jorge Luiz"

Ultrasound-assisted extraction for the determination of Cu, Mn, Ca, and Mg in alternative oilseed crops using flame atomic absorption spectrometry by Peronico, Vanessa Cruz Dias, Raposo, Jorge Luiz

“…•An efficient sample preparation based on a green chemistry principle was developed.•Diluted nitric acid solution allowed leaching the mineral contents of…”
Get full text

Genotoxic and mutagenic effects of polluted surface water in the midwestern region of Brazil using animal and plant bioassays by Dourado, Priscila Leocádia Rosa, Rocha, Monyque Palagano da, Roveda, Liriana Mara, Raposo, Junior, Jorge Luiz, Cândido, Liliam Sílvia, Cardoso, Claudia Andréa Lima, Morales, Maria Aparecida Marin, Oliveira, Kelly Mari Pires de, Grisolia, Alexeia Barufatti

“…This study aimed to evaluate DNA damage in animal and plant cells exposed to water from the Água Boa stream (Dourados, Mato Grosso do Sul, Brazil) by using…”
Get full text

Determination of organochlorine pesticides in ground water samples using solid-phase microextraction by gas chromatography-electron capture detection by LUIZ RAPOSO JUNIOR, Jorge, RE-POPPI, Nilva

“…A direct immersion solid-phase microextraction coupled with gas chromatography-electron capture detection (SPME-GC-ECD) method was optimized and validated for…”
Get full text

Evaluation of alternate lines of Fe for sequential multi-element determination of Cu, Fe, Mn and Zn in soil extracts by high-resolution continuum source flame atomic absorption spectrometry by Luiz Raposo, Jorge, de Oliveira, Silvana Ruella, Caldas, Naíse Mary, Neto, José Anchieta Gomes

“…The usefulness of the secondary line at 252.744 nm and the approach of side pixel registration were evaluated for the development of a method for sequential…”
Get full text

Internal standardization combined with dilute-and-shoot preparation of distilled alcoholic beverages for Cu determination by high-resolution continuum source flame atomic absorption spectrometry by Raposo, Jorge Luiz, de Oliveira, Adriana Paiva, Jones, Bradley Todd, Neto, José Anchieta Gomes

“…► Bismuth, In, Sn and Te were evaluated as internal standards for Cu in distilled beverages. ► Bismuth and Te were effective internal standards. ►…”
Get full text

Cytotoxicity, Genotoxicity and Mutagenicity of Aluminum, Manganese and Lead in Meristematic Cells of Root Allium cepa by Veiga Francisco, Luiza Flavia, do Amaral Crispim, Bruno, Finoto Viana, Lucilene, dos Santos Nascimento, Helina, Raposo Junior, Jorge Luiz, Barufatti Grisolia, Alexeia

“…Metals are chemical contaminants that are not normally biodegradable and accumulate in living organisms. In addition, they may present toxic effects to plants…”
Get full text

Determination of copper at wide range concentrations using instrumental features of high-resolution continuum source flame atomic absorption spectrometry by Lima, Renata Toledo, Raposo Júnior, Jorge Luiz, Virgílio, Alex, Gomes Neto, José Anchieta

“…This work describes a method to determine Cu at wide range concentrations in a single run without need of further dilutions employing high-resolution continuum…”
Get full text

Mathematical equation correction to spectral and transport interferences in high-resolution continuum source flame atomic absorption spectrometry: determination of lead in phosphoric acid by Raposo Junior, Jorge Luiz, De Oliveira, Silvana Ruella, Nóbrega, Joaquim Araújo, Gomes Neto, José Anchieta

“…In this work, a new mathematical equation correction approach for overcoming  spectral and transport interferences was proposed. The proposal was applied to …”
Get full text

A greener sample preparation procedure using reverse-phase dispersive liquid–liquid microextraction for multielement determination of inorganic species in petroleum-derived samples by Roberta Nogueira da Silva, Kássia, Santos Pereira, Hugo, Aragão do Nascimento, Valter, Raposo Jr, Jorge Luiz

Get full text

Chemical composition and evaluation of antibacterial and antioxidant activities of the essential oil of Croton urucurana Baillon (Euphorbiaceae) stem bark by Simionatto, Euclésio, Bonani, Vanderléa F. L., Morel, Ademir Farias, Poppi, Nilva Ré, Raposo Júnior, Jorge Luiz, Stuker, Caroline Z., Peruzzo, Gisele M., Peres, Marize T. L. P., Hess, Sônia C.

“…The essential oil obtained from the stem bark of Croton urucurana Baillon (Euphorbiaceae) was analysed by GC and GC-MS. 83 compounds were identified and…”
Get full text

Fast sequential multi-element determination of Ca, Mg, K, Cu, Fe, Mn and Zn for foliar diagnosis using high-resolution continuum source flame atomic absorption spectrometry: Feasibility of secondary lines, side pixel registration and least-squares background correction by de Oliveira, Silvana Ruella, Raposo, Jorge Luiz, Gomes Neto, José Anchieta

“…The fast sequential multi-element determination of Ca, Mg, K, Cu, Fe, Mn and Zn in plant tissues by high-resolution continuum source flame atomic absorption…”
Get full text

Characterization of pyroligneous acid used in agriculture by gas chromatography-mass spectrometry by Souza, João Batista G., Ré-Poppi, Nilva, Raposo Jr, Jorge Luiz

“…In this study, two kinds of samples of pyrolysis liquid were analyzed, one produced at laboratory and other acquired from a company that supplies agricultural…”
Get full text

Determination of copper at wide range concentrations using instrumental features of high-resolution continuum source flame atomic absorption spectrometry by Lima, Renata Toledo, Raposo Jr, Jorge Luiz, Virgílio, Alex, Gomes Neto, José Anchieta

“…This work describes a method to determine Cu at wide range concentrations in a single run without need of further dilutions employing high-resolution continuum…”
Get full text

The influence of industrial and agricultural waste on water quality in the Água Boa stream (Dourados, Mato Grosso do Sul, Brazil) by da Rocha, Monyque Palagano, Dourado, Priscila Leocadia Rosa, de Souza Rodrigues, Mayara, Raposo, Jorge Luiz, Grisolia, Alexeia Barufatti, de Oliveira, Kelly Mari Pires

“…Water quality monitoring is used to determine the impact of human activities on the environment. We evaluated water quality in the Água Boa stream, located…”
Get full text

Determination of Silicon in Lubricant Oil by High-Resolution Continuum Source Flame Atomic Absorption Spectrometry Using Least-Square Background Correction and Internal Standardization by Raposo, Jorge Luiz, Oliveira, Silvana Ruella, Neto, José Anchieta Gomes, Nóbrega, Joaquim Araújo, Jones, Bradley Todd

“…The least-squares background correction (LSBC) and internal standardization procedures were combined to eliminate spectral interferences caused by the CS…”
Get full text

Evaluation of different foliar fertilizers on the crop production of sugarcane by Raposo Junior, Jorge Luiz, Neto, José Anchieta Gomes, Sacramento, Luis Vitor Silva

“…Influence of different foliar fertilizers (phosphite, micronutrients, biostimulant, phosphite + micronutrients, phosphite + biostimulant, micronutrients +…”
Get full text

Multi-element determination of calcium, potassium and magnesium in medicinal plant by high-resolution continuum source atomic absorption spectrometry by Silva, Tiago Varão, Rêgo, Jardes Figuerêdo, De Moraes, Mercedes, Cavalheiro, Alberto José, Gomes Neto, José Anchieta, Raposo Júnior, Jorge Luiz

“…A simple and rugged method to determine Ca, K and Mg in a single aliquot of medicinal plants by high-resolution continuum source flame atomic absorption…”
Get full text

Nutritional and chemical characterizations of fruits obtained from Syagrus romanzoffiana, Attalea dubia, Attalea phalerata and mauritia flexuosa by Lescano, Caroline Honaiser, de Oliveira, Ivan Pires, Freitas de Lima, Fernando, Baldivia, Débora da Silva, Justi, Priscilla Narciso, Cardoso, Claudia Andrea Lima, Raposo Júnior, Jorge Luiz, Sanjinez-Argandoña, Eliana Janet

“…Several species of Arecaceae are widely distributed in tropical regions and are economically important as a source of vegetable oil and bioactive nutrients…”
Get full text

Métodos para análises de HPA e BTEX em águas subterrâneas de postos de revenda de combustíveis: um estudo de caso em Campo Grande, MS, Brasil by Gebara, Sâmya Soler, Ré-Poppi, Nilva, Nascimento, André Luiz Carneiro Soares do, Raposo Junior, Jorge Luiz

Get full text

Internal Standardization in Dispersion Systems: an Efficient Application to Determine Mg in Crude Vegetable Oils by FS-FAAS by Roveda, Liriana Mara, Raposo, Jorge Luiz

“…This study established two sample preparation procedures based on dispersion systems for the determination of Mg in crude vegetable oil by IS-FS-FAAS. The…”
Get full text