Fábio Alan Carqueija Amorim
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View article: A new method employing extraction induced by emulsion breaking and MIP OES for multi-element determination of inorganic elements in handmade chocolate
A new method employing extraction induced by emulsion breaking and MIP OES for multi-element determination of inorganic elements in handmade chocolate Open
The objective of this work was the multielement determination of Ca, Zn, Sr, Ba, Cu, Mn, Mg and Cr in chocolate barr samples after extraction induced by emulsion breakage (EIEB) and quantification by optical emission spectrometry whit plas…
View article: Adsorção de chumbo (II) em solução aquosa usando carvão ativado do caroço da manga (Mangifera indica L.)
Adsorção de chumbo (II) em solução aquosa usando carvão ativado do caroço da manga (Mangifera indica L.) Open
RESUMO Uma maneira eficaz de se aproveitar os resíduos agrícolas é convertê-los na forma de carvão ativado, o qual possui diversas utilidades, incluindo a purificação de água. Com este objetivo o carvão ativado derivado do caroço de manga …
View article: Application of multivariate analysis techniques in the evaluation of metal content in industrialized spices sold in sachets
Application of multivariate analysis techniques in the evaluation of metal content in industrialized spices sold in sachets Open
Industrialized powdered spices are widely used by the population in food preparation, although they are associated with several health problems.In this work, six metals (Zn, Fe, Ca, Mg, Na, and K) were determined in samples of dry industri…
View article: Application of multivariate analysis techniques in the evaluation of metal content in industrialized spices
Application of multivariate analysis techniques in the evaluation of metal content in industrialized spices Open
Industrialized powdered spices are widely used by the population in food preparation, although they are associated with several health problems. This relationship between spices and health problems can be explained due to the presence of s…
View article: Determination of lanthanide and actinide elements by energy dispersive x-ray fluorescence spectrometry applying DLLME preconcentration and dried spot
Determination of lanthanide and actinide elements by energy dispersive x-ray fluorescence spectrometry applying DLLME preconcentration and dried spot Open
View article: Multivariate Analysis: Use of Doehlert Design (DD) for Optimization of a Simple Sample Preparation Procedure for the Determination of Inorganic Constituents in Cocoa Beans Employing Microwave Acid Digestion and ICP OES
Multivariate Analysis: Use of Doehlert Design (DD) for Optimization of a Simple Sample Preparation Procedure for the Determination of Inorganic Constituents in Cocoa Beans Employing Microwave Acid Digestion and ICP OES Open
This study presents a microwave-assisted procedure for sample preparation of cocoa beans using diluted HNO3 with H2O2 for the determination of Ba, Ca, Cu, K, Mg, Mn, P, S, Sr and Zn by inductively coupled plasma optical emission spectromet…
View article: Multivariate optimization of ultrasound-assisted liquid–liquid microextraction based on two solvents for cadmium preconcentration prior to determination by flame atomic absorption spectrometry
Multivariate optimization of ultrasound-assisted liquid–liquid microextraction based on two solvents for cadmium preconcentration prior to determination by flame atomic absorption spectrometry Open
A method based on ultrasound-assisted emulsification liquid–liquid microextraction (USAEME) for cadmium determination by flame atomic absorption spectrometry (FAAS) was developed in this work.
View article: Artificial neural network employment for element determination in <i>Mugil cephalus</i> by ICP OES in Pontal Bay, Brazil
Artificial neural network employment for element determination in <i>Mugil cephalus</i> by ICP OES in Pontal Bay, Brazil Open
Mixture design applied to sample preparation of Mugil cephalus and exploratory evaluation of the concentrations of chemical elements using Kohonen Self-Organizing Map (KSOM) combined with Artificial Neural Network (ANNs).
View article: Multivariate Analysis: Use of Doehlert Design (DD) for Optimization of a Simple Sample Preparation Procedure for the Determination of Inorganic Constituents in Cocoa Beans Employing Microwave Acid Digestion and ICP OES
Multivariate Analysis: Use of Doehlert Design (DD) for Optimization of a Simple Sample Preparation Procedure for the Determination of Inorganic Constituents in Cocoa Beans Employing Microwave Acid Digestion and ICP OES Open
This study presents a microwave-assisted procedure for sample preparation of cocoa beans using diluted HNO 3 with H 2 O 2 for the determination of Ba, Ca, Cu, K, Mg, Mn, P, S, Sr and Zn by inductively coupled plasma optical emission spectr…
View article: Application of a Novel Ion-Imprinted Polymer to the Separation of Traces of CdII Ions in Natural Water: Optimization by Box-Behnken Design
Application of a Novel Ion-Imprinted Polymer to the Separation of Traces of CdII Ions in Natural Water: Optimization by Box-Behnken Design Open
This study describes the preparation of a novel ion-imprinted polymer (IIP) to apply pre-concentration of cadmium ions in water samples of the Pontal Bay in Ilhéus, Brazil. First, cadmium ion was complexed with 2-(2-thiazolylazo)-p-cresol …
View article: PRECONCENTRATION BASED ON COPRECIPITATION USING SILVER CHROMATE AS A CARRIER FOR COPPER DETERMINATION BY FAAS
PRECONCENTRATION BASED ON COPRECIPITATION USING SILVER CHROMATE AS A CARRIER FOR COPPER DETERMINATION BY FAAS Open
In the present paper, a preconcentration procedure based in the coprecipitation of copper by silver dichromate (Ag2CrO4) and consecutive determination by flame atomic absorption spectrometry (FAAS) was proposed. The experimental factors we…
View article: DESCARTE DE RESÍDUOS EM AULAS DE LABORATÓRIO DE QUÍMICA: CONCEPÇÕES E PRÁTICAS DE DISCENTES NO ENSINO SUPERIOR
DESCARTE DE RESÍDUOS EM AULAS DE LABORATÓRIO DE QUÍMICA: CONCEPÇÕES E PRÁTICAS DE DISCENTES NO ENSINO SUPERIOR Open
View article: AVALIAÇÃO DOS ÍNDICES DE ACIDEZ E PERÓXIDOS DO ÓLEO DE SOJA UTILIZADO EM FRITURAS DE ALIMENTOS COMERCIALIZADOS NO CENTRO DA CIDADE DE ILHÉUS-BA
AVALIAÇÃO DOS ÍNDICES DE ACIDEZ E PERÓXIDOS DO ÓLEO DE SOJA UTILIZADO EM FRITURAS DE ALIMENTOS COMERCIALIZADOS NO CENTRO DA CIDADE DE ILHÉUS-BA Open
View article: Application of Factorial Design and Desirability Function to Develop a Single Analytical Procedure for the Determination of Metals in Different Tissues of Blue Crab (Callinectes danae)
Application of Factorial Design and Desirability Function to Develop a Single Analytical Procedure for the Determination of Metals in Different Tissues of Blue Crab (Callinectes danae) Open
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View article: PRÉ-CONCENTRAÇÃO BASEADA NA COPRECIPITAÇÃO USANDO CROMATO DE PRATA COMO CARREADOR PARA DETERMINAÇÃO DE COBRE POR FAAS
PRÉ-CONCENTRAÇÃO BASEADA NA COPRECIPITAÇÃO USANDO CROMATO DE PRATA COMO CARREADOR PARA DETERMINAÇÃO DE COBRE POR FAAS Open
In the present paper, a preconcentration procedure based in the coprecipitation of copper by silver dichromate (Ag2CrO4) and consecutive determination by flame atomic absorption spectrometry (FAAS) was proposed. The experimental factors we…
View article: Application of Factorial Design and Desirability Function to Develop a Single Analytical Procedure for the Determination of Metals in Different Tissues of Blue Crab (Callinectes danae)
Application of Factorial Design and Desirability Function to Develop a Single Analytical Procedure for the Determination of Metals in Different Tissues of Blue Crab (Callinectes danae) Open
In this scientific work, it was developed a single analytical procedure for the sample preparation of different tissues of blue crabs using microwave-assisted digestion for the determination of Cu, Mn, Fe and Zn by fast sequential flame at…
View article: Use of Mixture Design with Minimal Restrictions to Optimize an Extraction Procedure Employing Diluted Acids Assisted by Ultrasound and Microwave for Nutrient Element Determination in Vegetal Samples
Use of Mixture Design with Minimal Restrictions to Optimize an Extraction Procedure Employing Diluted Acids Assisted by Ultrasound and Microwave for Nutrient Element Determination in Vegetal Samples Open
In this work, it was developed an alternative analytical strategy for the preparation of vegetal samples extracted with diluted acids and assisted by ultrasound and microwave radiation for the determination of nutrients elements by fast se…
View article: Application of a Novel Ion-Imprinted Polymer to the Separation of Traces of CdII Ions in Natural Water: Optimization by Box-Behnken Design
Application of a Novel Ion-Imprinted Polymer to the Separation of Traces of CdII Ions in Natural Water: Optimization by Box-Behnken Design Open
This study describes the preparation of a novel ion-imprinted polymer (IIP) to apply preconcentration of cadmium ions in water samples of the Pontal Bay in Ilhéus, Brazil.First, cadmium ion was complexed with 2-(2-thiazolylazo)-p-cresol (T…
View article: Study of the Cu(II) Removal from Aqueous Medium Using Carbon Prepared from Licuri Shell (Syagrus coronata)
Study of the Cu(II) Removal from Aqueous Medium Using Carbon Prepared from Licuri Shell (Syagrus coronata) Open
Different alternatives for the removal of metals in waters and effluents are used, and the adsorption is a widely used method. This study aimed to preparation of the activated carbon from the shell of licuri (Syagrus coronata) coconut (LAC…
View article: Use of Mixture Design with Minimal Restrictions to Optimize an Extraction Procedure Employing Diluted Acids Assisted by Ultrasound and Microwave for Nutrient Element Determination in Vegetal Samples
Use of Mixture Design with Minimal Restrictions to Optimize an Extraction Procedure Employing Diluted Acids Assisted by Ultrasound and Microwave for Nutrient Element Determination in Vegetal Samples Open
In this work, it was developed an alternative analytical strategy for the preparation of vegetal samples extracted with diluted acids and assisted by ultrasound and microwave radiation for the determination of nutrients elements by fast se…
View article: Aplicação do Extrato De Amêndoa de Cacau (Theobroma Cacao. L) como um Novo Indicador em Titulações Ácido-Base
Aplicação do Extrato De Amêndoa de Cacau (Theobroma Cacao. L) como um Novo Indicador em Titulações Ácido-Base Open
Neste trabalho, foi proposto a utilizacao de um indicador natural obtido das sementes do Theobroma cacao L. (cacau) que e uma planta encontrada em abundância no sul da Bahia, Brasil. O extrato que contem os corantes a partir de sementes …