Výsledky vyhledávání - "Jacira Teixeira Castro"

Toxic Elements and Microbiological Content of Food: Evidence from a Case Study in a Brazilian City Heavily Contaminated by Lead and Cadmium

Autor: Fernanda Freitas, Fábio Santos de Oliveira, Kelly Menezes Macêdo, Jacira Teixeira Castro, Daniele Cristina Muniz Batista dos Santos, Isabella de Matos Mendes da Silva, Maykson Costa de Jesus

Publikováno v: Journal of the Brazilian Chemical Society v.28 n.7 2017
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 28, Issue: 7, Pages: 1220-1228, Published: JUL 2017

Food security has become a major concern of the world population and this is even more prominence in polluted areas. This study aimed to evaluate microbiological and toxic elements content of local food itens from Santo Amaro, Bahia. The determinatio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4869b5bd3dfd4ec86f90692b73bdf69
https://doi.org/10.21577/0103-5053.20160283

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Geographical Characterization of Beans Based on Trace Elements After Microwave-Assisted Digestion Using Diluted Nitric Acid

Autor: Daniele Cristina Muniz Batista dos Santos, Jacira Teixeira Castro, Wagna Piler Carvalho dos Santos, Maria das Graças Andrade Korn, Andréa Pires Fernandes

Publikováno v: Food Analytical Methods. 6:1133-1143

In this paper, multivariate optimization was applied for the development of microwave-assisted digestion using diluted nitric acid for the determination of essential (Ca, Co, Cr, Cu, K, Mg, Mn, Mo, Ni, P, Se, and Zn) and nonessential (Al, As, Ba, Pb,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a79db30aae4a027dd16b877d11a5cda4
https://doi.org/10.1007/s12161-012-9520-5

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Determination of lead in water samples after its separation and preconcentration by 4,5-dihydroxy-1,3-benzenedisulfonic acid functionalised polyurethane foam

Autor: Juracir Silva Santos, Valfredo Azevedo Lemos, Sergio Luis Costa Ferreira, Jacira Teixeira Castro, Adriana da Silva Lima

Publikováno v: International Journal of Environmental Analytical Chemistry. 92:1121-1134

A new sorbent based on polyurethane foam functionalised with 4,5-dihydroxy-1,3-benzenedisulfonic acid (Tiron-PUF) was synthesised. This material was used in the development of a procedure for preconcentration of lead, with subsequent detection by fla

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a7206d52514a7bb513d8d825cb8e9550
https://doi.org/10.1080/03067319.2010.520129

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A critical evaluation of digestion procedures for coffee samples using diluted nitric acid in closed vessels for inductively coupled plasma optical emission spectrometry

Autor: Mauro Korn, Jacira Teixeira Castro, Elisângela Costa Santos, Joaquim A. Nóbrega, Maria das Graças Andrade Korn, Wagna Piler Carvalho dos Santos, Letícia M. Costa

Publikováno v: Talanta. 78:1378-1382

The efficiency of diluted nitric acid solutions for digesting regular coffee samples was evaluated employing two closed vessel procedures: one was based on microwave-assisted heating and the other was based on conductive heating using pressurized Par

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4cc1b664d874573f0b691fd30a68c25c
https://doi.org/10.1016/j.talanta.2009.02.030

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Application of multivariate optimization in the development of an ultrasound-assisted extraction procedure for multielemental determination in bean seeds samples using ICP OES

Autor: Andréa Pires Fernandes, Marcos A. Bezerra, Sergio Luis Costa Ferreira, Wagna Piler Carvalho dos Santos, Maria das Graças Andrade Korn, Jacira Teixeira Castro

Publikováno v: Microchemical Journal. 91:153-158

In this paper, multivariate optimization was applied for the development of an ultrasound-assisted multielemental extraction procedure for analysis of bean samples by inductively coupled plasma optical emission spectrometry. For this procedure, powde

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d07b4b9f4273800af5aa67efff502dda
https://doi.org/10.1016/j.microc.2008.10.001

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New Materials for Solid‐Phase Extraction of Trace Elements

Autor: Valfredo Azevedo Lemos, Antonio Celso Spinola Costa, Djane Santiago de Jesus, Elenir Souza Santos, Leonardo S. G. Teixeira, Marcos A. Bezerra, Jacira Teixeira Castro, Patrícia Xavier Baliza, Luiz Augusto Martins Cardoso, Luana Novaes Santos

Publikováno v: Applied Spectroscopy Reviews. 43:303-334

The development of new sorbents and their application in preconcentration methods for determination of trace elements is a subject of great interest. This review summarizes and discusses several analytical methods involving the preparation and use of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3a3604d9d83631c1670a3ce2e94502e3
https://doi.org/10.1080/05704920802031341

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Evaluation of sample preparation (grinding and sieving) of bivalves, coffee and cowpea beans for multi-element analysis

Autor: Francisco Barros, Vanessa Hatje, Jacira Teixeira Castro, S.V. Trignano, Wagna Piler Carvalho dos Santos, L.N. Lima, Maria das Graças Andrade Korn

Publikováno v: Microchemical Journal. 89:123-130

Elemental analyses of food samples require several pre-treatment steps that constitute a great potential source of errors. In this study, the influence of cryogenic, ball and knife mill devices and also sieving using different sizes of sieve (100, 30

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::05e2be21a77a002af926cd7d6c8ae169
https://doi.org/10.1016/j.microc.2008.01.003

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Sample Preparation for the Determination of Metals in Food Samples Using Spectroanalytical Methods—A Review

Autor: Wagna Piler Carvalho dos Santos, Andréa Pires Fernandes, Elane Santos da Boa Morte, Daniele Cristina Muniz Batista dos Santos, Alete Paixão Teixeira, Mauro Korn, José Tiago Pereira Barbosa, Eduardo Batista Guimarães Nunes dos Santos, Bernhard Welz, Jacira Teixeira Castro, Maria das Graças Andrade Korn

Publikováno v: Applied Spectroscopy Reviews. 43:67-92

The present article gives an overview of recent publications and modern techniques of sample preparation for food analysis employing atomic and inorganic mass spectrometric techniques, such as flame atomic absorption spectrometry, chemical vapor gene

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0ad5ceeb700b60c05a4d9634b26cf58a
https://doi.org/10.1080/05704920701723980

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Planejamento fatorial aplicado à digestão de amostras de feijão assistida por radiação microondas

Autor: Edivan V. Carvalho, Maria das Graças Andrade Korn, Ana Rita A. Nogueira, Letícia M. Costa, Jacira Teixeira Castro, Wagna Piler Carvalho dos Santos

Publikováno v: Química Nova, Vol 29, Iss 1, Pp 149-152 (2006)

The use of factorial design was evaluated for optimization of focused-microwave-assisted digestion of bean samples. Calcium, Fe, Mg, Mn and Zn percentual recoveries were determined in digestates after focused-microwave-assisted digestion according to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0e55e0123df275df3374825d69c51cf
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422006000100026&tlng=pt

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