Development of a Method Based on Slurry Sampling for Determining Ca, Fe, and Zn in Coffee Samples by Flame Atomic Absorption Spectrometry

Autor: Darci Santos Silva, Sulene Alves Araújo, Marcos A. Bezerra, Joabes Santos Trindade, Fábio Alan Carqueija Amorim, Rosane Moura Aguiar, Juscelia Pereira dos Santos Alves, Ariadna Chaves Trindade

Publikováno v: Food Analytical Methods. 13:203-211

Coffee is a source of mineral nutrients and, therefore, analytical procedures are needed for fast and reliable determination of metals in this matrix. This work proposes the development of a procedure for the determination of calcium, iron, and zinc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0af94bd2d8eaf42c1f51fdfcad4976aa
https://doi.org/10.1007/s12161-019-01578-5

Mineral Nutrients and Plant-Fungal Interaction in Cocoa Trees (Theobroma cacao L.)

Autor: André Luiz S. da Silva, Marcos A. Bezerra, Gregório M. Santana, Hélio R. Sousa, Vinnícius Henrique Cerqueira da Silva, José O. de Souza, Raildo Mota de Jesus, Juscelia Pereira dos Santos Alves

Publikováno v: Journal of the Brazilian Chemical Society, Volume: 32, Issue: 2, Pages: 337-346, Published: 01 FEB 2021
Journal of the Brazilian Chemical Society v.32 n.2 2021
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ

An infection of the fungus Moniliophthora perniciosa in cocoa trees reduces productivity of the plant. In this study, the concentrations of mineral nutrients in healthy leaves and in leaves of vegetative broom of the cocoa plant were determined, and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f3ebc7fcb5a48b5b06e02071bc464df
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532021000200337&lng=en&tlng=en

An alkaline dissolution-based method using tetramethylammonium hydroxide for metals determination in cow milk samples

Autor: Cleber Galvão Novaes, Marcos A. Bezerra, Jeferson Alves Barreto, Juscelia Pereira dos Santos Alves, Sulene Alves Araújo, Uillian Mozart Ferreira da Mata Cerqueira, Joabes Santos Trindade

Publikováno v: Food Chemistry. 334:127559

This study approaches the development of a method for the determination of Ca, Mg, Zn, and Fe in liquid and powdered cow milk. The method is based on sample dissolution assisted by ultrasound energy in tetramethylammonium hydroxide (TMAH) media and d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4aa66fc627affd460fce80faa498251e
https://doi.org/10.1016/j.foodchem.2020.127559

Automation of continuous flow analysis systems – a review

Autor: Sulene Alves Araújo, Djalma Menezes de Oliveira, Queila Oliveira dos Santos, Cleber Galvão Novaes, Valfredo Azevedo Lemos, Marcos A. Bezerra, Uillian Mozart Ferreira da Mata Cerqueira, Jeferson Alves Barreto, Juscelia Pereira dos Santos Alves

Publikováno v: Microchemical Journal. 155:104731

This review approaches the automation of continuous flow analysis systems. The characteristics and working principles of the devices necessary for automation of the steps of the system are presented and discussed. Automation can be performed by a sim

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4cb7ad4b265cae7b154244499bfad7f6
https://doi.org/10.1016/j.microc.2020.104731

Application of mixture design in analytical chemistry

Autor: Cleber Galvão Novaes, Valfredo Azevedo Lemos, Juscelia Pereira dos Santos Alves, Sulene Alves Araújo, Hélio Rocha Souza Filho, Marcos A. Bezerra, Raildo Mota de Jesus

Publikováno v: Microchemical Journal. 152:104336

This manuscript approaches the use of mixture design in the optimization of any stage of an analytical method. In addition to addressing the basic principles of this type of design, examples of applications showing the potential of these chemometric

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::049cf972b344e3f681c671c1d56238bc
https://doi.org/10.1016/j.microc.2019.104336