Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Rosivan dos Santos de Assis"'
Autor:
Rosivan dos Santos de Assis, Ricardo J. Cassella, Cleber Galvão Novaes, Valfredo Azevedo Lemos, Luana Bastos Santos, Jeferson Alves Barreto
Publikováno v:
Talanta. 238(Pt 1)
Dispersive liquid-liquid microextraction (DLLME) has recently been widely used in the separation and preconcentration of various chemical species. Among the various approaches using DLLME are systems that use a syringe as an extraction environment. I
Autor:
Valfredo Azevedo Lemos, Uneliton Neves Silva, Rosivan dos Santos de Assis, Luana Bastos Santos
Publikováno v:
Talanta. 238:123038
An on-line system employing switchable-hydrophilicity solvent-based liquid-phase microextraction (SHS-LPME) is described in this work. The method is based on the preconcentration of the species formed between cobalt and the reagent 1-nitroso-2-naphth
Autor:
Sergio Luis Costa Ferreira, Rosivan dos Santos de Assis, Valfredo Azevedo Lemos, Jeferson Alves Barreto, Cleber Galvão Novaes, Cheilane T. de Souza, Luana Bastos Santos
Publikováno v:
Water, Air, & Soil Pollution. 231
Recently, analytical procedures based on computer vision related to the colorimetric analysis of digital images have been described in the scientific literature. In this sense, a novel analytical approach is presented based on digital image colorimet
Autor:
Raquel Carvalho Montenegro, Edimara Lima dos Santos, Sebastião Gomes Silva, Caroline Pâmella Ferreira Drigo, Rosivan dos Santos de Assis, Francisco Hermes Santos da Silva, José Guilherme S. Maia, Waldiclécio Ribeiro Farias, Yara Karolini Cirilo, Eleonora Celli Carioca Arenare, Lucilene Cândida dos Santos, Alessandra Bernardo de Oliveira, Cristiana de Barcellos Passinato, Emanuela Feitoza da Costa, Joyce Kelly do Rosário da Silva, Jamile S da Costa, Vilmara Fabrícia dos Santos Moura, Andreia do Socorros Silva da Costa, Rosa Helena Veras Mourão, J. C. B. Silva, Valfredo Azevedo Lemos, Natalia Lázara Gouveia, Rogério Pacheco Rodrigues, João Augusto Pereira da Rocha, Jordana Américo Zei Andrade, Adenilson de Sousa Barroso, Pablo Luis B. Figueiredo, Otavio Augusto Artifon Zanatta, Maria de Fátima Vilhena da Silva, Elaine Cristina Medeiros da Rocha, Laine Celestino Pinto, Ernandes Sávio Negreiros de Alcantara, Reginaldo Ferreira da Silva, Ana Raquel Araujo da Silva, Marcos A. Bezerra, João Lucas Isidio Oliveira de Almeida, Danielle Ferreira Tizzo, Diego Raniere Nunes Lima, Israel Bezerra Silva, Renato Araújo da Costa, Lucas Miranda Vieira, Dilaine Suellen Caires Neves, Ananda Michelle Lima, Alfredo Alberto Muxel, Daniele Silva de Lisboa, Bárbara Nascimento Aud, Flávia Oliveira Monteiro da Silva Abreu, Anne Kamille Silva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4800d97321b06a148e16ca1acd3d49b
https://doi.org/10.22533/at.ed.867200204
https://doi.org/10.22533/at.ed.867200204
Autor:
Marcos A. Bezerra, Rosivan dos Santos de Assis, Valfredo Azevedo Lemos, Dilaine Suellen Caires Neves
Publikováno v:
O Conhecimento Científico na Química
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39cae94ab99e0669ff09637d836eb227
https://doi.org/10.22533/at.ed.8672002044
https://doi.org/10.22533/at.ed.8672002044
Autor:
Cleber Galvão Novaes, Rosivan dos Santos de Assis, Raildo Mota de Jesus, Franciele Castro Novais, Ivana Lago da Silva Romão, Ana Maria Pinto dos Santos, Vinnícius Henrique Cerqueira da Silva
Publikováno v:
Journal of the Brazilian Chemical Society.
This study is the first to propose the simultaneous quantification of 10 elements in fruits of Casearia fasciculata by inductively coupled plasma optical emission spectrometry (ICP OES). A method of digestion using dilute nitric acid was optimized by
Autor:
Rosivan dos Santos de Assis, Valfredo Azevedo Lemos, Jeferson Alves Barreto, Cleber Galvão Novaes, Marcos A. Bezerra, Luana Bastos Santos
Publikováno v:
TrAC Trends in Analytical Chemistry. 146:116478
In recent years, the search for the principles of green chemistry in analytical methods has grown considerably. In green analytical chemistry, solvents occupy an essential place. Some criteria are necessary for a solvent to be qualified as a green me
Autor:
Ricardo J. Cassella, Rosivan dos Santos de Assis, Luana Bastos Santos, Jeferson Alves Barreto, Valfredo Azevedo Lemos
Publikováno v:
Microchemical Journal. 157:105064
In the present work, preconcentration by pressure variation in-syringe dispersive liquid-liquid microextraction (PV-IS-DLLME) was used for the determination of cobalt by digital image colorimetry. The detection system, built in the laboratory, involv
Autor:
Ricardo J. Cassella, Jeferson Alves Barreto, Rosivan dos Santos de Assis, Valfredo Azevedo Lemos
Publikováno v:
Talanta. 193
In this work, a novel approach was developed to perform dispersive liquid–liquid microextraction using a rapid pressure variation to disperse the extraction solvent in an aqueous medium. A glass syringe was used to produce an environment subject to