Evaluation of the use of Leptodactylus ocellatus (Anura: Leptodactylidae) frog tissues as bioindicator of metal contamination in Contas River, Northeastern Brazil

by CORREIA,LÍVIA O., SIQUEIRA JÚNIOR,SÉRGIO, CARNEIRO,PAULO L.S., BEZERRA,MARCOS A.
Published 2014

Determination of Copper and Cadmium in Petroleum Produced Formation Water by Electrothermal Atomic Absorption Spectrometry after Cloud Point Extraction

by Souza,Valdinei S., Teixeira,Leonardo S. G., Santos,Queila O., Gomes,Ivaldo S., Bezerra,Marcos A.
Published 2020

Evaluation of Two Statistical Tools (Least Squares Regression and Artificial Neural Network) in the Multivariate Optimization of Solid-Phase Extraction...

by Sousa Filho,Hélio R., Oliveira,Daniel M., Lemos,Valfredo A., Bezerra,Marcos A.
Published 2015

Application of modified simplex on the development of a preconcentration system for cadmium determination in sediments, food and cigarettes

by SANTOS,QUEILA O., MORENO,ISLANIA, SANTOS,LEANDRO DOS, SANTOS,ALDENOR G., SOUZA,VALDINEI S., BEZERRA,MARCOS A.
Published 2016

Characterization, fractionation and mobility of trace elements in surface sediments of the Jequiezinho River, Bahia, Brazil

by SILVA,DARCI S., CERQUEIRA,UILLIAM M.F.M., AGUIAR,ROSANE M., CARNEIRO,PAULO LUIS S., BEZERRA,MARCOS A.
Published 2020

Use of Constrained Mixture Design in the Optimization of a Method Based on Extraction Induced by Emulsion Breaking for the Determination of Ca, Mg, Mn, Fe and Zn from Palm Oil by F...

by Valasques,Gisseli S., Santos,Ana M. P. dos, Silva,Darllen G. da, Alves,Juscelia P. S., Bezerra,Marcos A.
Published 2018

Multivariate optimization of a method for antimony determination by hydride generation atomic fluorescence spectrometry in hair samples of patients undergoing chemotherapy against...

by CARDOZO,MANUELLE C., CAVALCANTE,DANNUZA D., SILVA,DANIEL L.F., SANTOS,WALTER N.L. DOS, BEZERRA,MARCOS A.
Published 2016

Development of a Methodology Based on Extraction Induced by Emulsion Breaking for Copper Determination in Gasohol by Graphite Furnace Atomic Absorption Spectrometry

by Souza,Valdinei S. de, Teixeira,Leonardo S. G., Korn,Maria G. A., Cerqueira,Uillian M. F. M., Bezerra,Marcos A.
Published 2021

Multivariate optimization of an ultrasound-assisted extraction procedure for Cu, Mn, Ni and Zn determination in ration to chickens

by BARROS,JOÉLIA M., BEZERRA,MARCOS A., VALASQUES,GISSELI S., NASCIMENTO JÚNIOR,BARAQUÍZIO B. DO, SOUZA,ANDERSON S., ARAGÃO,NÁDIA M. DE
Published 2013

Multivariate Optimization of a Simultaneous Cloud Point Extraction Procedure of Cd, Cu and Ni from Sediments Samples and Determination by ICP OES

by Santos,Leandro dos, Santos,Queila O. dos, Moreno,Islania, Novaes,Cléber G., Santos,Márcio J. S. dos, Bezerra,Marcos A.
Published 2016

Use of Doehlert and constrained mixture designs in the development of a photo-oxidation procedure using UV radiation/H2O2 for decomposition of landfill leachate samples and determi...

by Bezerra,Marcos A., Souza,Antônio D.S., Oliveira,Rafael V., Oliveira,Djalma M., Cardoso,Luiz A.M., Sousa Filho,Hélio R.
Published 2015

Use of Arduino in the Development of a New and Fast Automated Online Preconcentration System Based on Double-Knotted Reactor for the Mn Determination in Tea Samples by Flame Atomic...

by Barreto,Jeferson A., Lemos,Valfredo A., Oliveira,Djalma M. de, Cerqueira,Uillian Mozart F. M., Meira,Lucília A., Bezerra,Marcos A.
Published 2020

Application of simplex optimization in the development of an automated online preconcentration system for manganese determination

by Santos,Queila O. dos, Novaes,Cléber G., Bezerra,Marcos A., Lemos,Valfredo A., Moreno,Islania, Silva,Douglas G. da, Santos,Leandro dos
Published 2010

Use of Mixture Design with Minimal Restrictions to Optimize an Extraction Procedure Employing Diluted Acids Assisted by Ultrasound and Microwave for Nutrient Element Determination...

by Costa,Vinícius C., Silva,Erik G. P., Lima,Daniel C., Franco,Marcelo, Jesus,Raildo M., Bezerra,Marcos A., Amorim,Fábio A. C.
Published 2018

Importância dos programas de triagem para o gene da hemoglobina S

by Bandeira,Flávia M. G. C., Bezerra,Marcos A. C., Santos,Magnun N. N., Gomes,Yara M., Araújo,Aderson S., Abath,Frederico G. C.
Published 2007

Development of a Simple and Fast Procedure Based on Acid Dilution for Determination of Macro and Microelements in Guarana-Based Beverages by ICP OES

by Silva,Vinnícius Henrique C. da, Silva Jr.,André Luiz S. da, Santos,Herick M., Lôbo,Ivon P., Bezerra,Marcos A., Jesus,Raildo M. de
Published 2021

Concentration of Metals in Plant Litter Produced in Regions of Caatinga in Southwest Bahia, Brazil

by Lima,Joaly S. S. O., Gomes,Ivaldo S., Cerqueira,Uillian M. F. M., Carneiro,Paulo L. S., Sousa Filho,Hélio R., Jesus,Raildo M. de, Bezerra,Marcos A.
Published 2020

Evaluation of the oxidative stability of biodiesel blends from soybean, tallow and castor bean using experimental mixture design

by Carvalho,Anaildes L., Santana,Sarah M. F., Silva,Cristiane S., Pepe,Iuri M., Bezerra,Marcos A., Aragão,Leandro M., Quintella,Cristina M., Teixeira,Leonardo S. G.
Published 2013

Synthesis, characterization and application of ion imprinted poly(vinylimidazole) for zinc ion extraction/preconcentration with faas determination

by Santos,Queila O. dos, Bezerra,Marcos A., Lima,Giovana de Fátima, Diniz,Kristiany M., Segatelli,Mariana G., Germiniano,Talitha O., Santos,Vivian da Silva, Tarley,César R. T.
Published 2014

Production, purification and characterization of a thermostable β-1,3-glucanase (laminarinase) produced by Moniliophthora perniciosa

by Sena,Amanda R., Júnior,Gildomar L.V., Góes Neto,Aristóteles, Taranto,Alex G., Pirovani,Carlos P., Cascardo,Júlio C.M., Zingali,Russolina B., Bezerra,Marcos A., Assis,Sandra A.
Published 2011