Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Tatiane Alfonso de Araujo"'
Autor:
Magno Trindade, P. A. C. Cunha, Tatiane Alfonso de Araujo, Glaucia Maria Silva, Valdir S. Ferreira
Publikováno v:
Eclética Química, Vol 31, Iss 1, Pp 31-38 (2018)
This work presents an electroanalytical method for the determination of moxifloxacin (MOXI) in tablets by its interaction with Cu(II) ion and subsequent electrochemical reduction at hang- ing mercury drop electrode (HMDE). A well-defined reduction pe
Externí odkaz:
https://doaj.org/article/33f26d1f9cb14112a272af7b43cbf021
Autor:
Bruno Gabriel Lucca, Natália Canhete de Moraes, Jacqueline Marques Petroni, Tatiane Alfonso de Araujo, Valdir Souza Ferreira
Publikováno v:
Mikrochimica acta. 188(12)
A new contact stamping method for fabrication of paper-based analytical devices (PADs) is reported. It uses an all-purpose acrylic varnish and 3D-printed stamps to pattern hydrophobic structures on paper substrates. The use of 3D printing allows quic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b57f8d6da5a77f609753d7aec0a4ffec
https://pubmed.ncbi.nlm.nih.gov/34837526
https://pubmed.ncbi.nlm.nih.gov/34837526
Autor:
Luiz Henrique Viana, Magno Aparecido Gonçalves Trindade, Adriana Garabini de Freitas Andrade, João Batista Gomes de Souza, Tatiane Alfonso de Araujo, Valdir Souza Ferreira, Ricardo Pini Caramit
Publikováno v:
Fuel. 105:306-313
An electroanalytical method for the simultaneous detection and quantification of tert -butylhydroquinone (TBHQ) and butyl hydroxyanisole (BHA) in biodiesel was developed using a voltammetric technique and screen-printed electrodes. The supporting ele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27583fefac40124d786333dd9dbec319
https://doi.org/10.1016/j.fuel.2012.06.062
https://doi.org/10.1016/j.fuel.2012.06.062
Autor:
Valdir Souza Ferreira, Antonio Marcos Jacques Barbosa, Magno Aparecido Gonçalves Trindade, Tatiane Alfonso de Araujo
Publikováno v:
Journal of Electroanalytical Chemistry. 681:127-132
Solid silver mercury amalgam electrodes (AgSAEs) represent a suitable alternative to mercury electrodes due to their similar electrochemical properties and non-toxicity of the amalgam material. Based on this knowledge, we report the use of silver sol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88cd517c7db3f34b1ca10c02fc6f2ec2
Autor:
Magno Aparecido Gonçalves Trindade, Tatiane Alfonso de Araujo, J. B. G. Júnior, Valdir Souza Ferreira
Publikováno v:
International Journal of Cosmetic Science. 34:91-96
An electroanalytical method was developed to detect and quantify the sunscreen agent octocrylene (OCR) in cosmetic products. The method was based on electrochemical reduction, using voltammetric techniques. OCR was reduced at -0.97 V vs. Ag/AgCl on a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f7bcfdc3cc387b44e82ea03b4f55824
https://doi.org/10.1111/j.1468-2494.2011.00686.x
https://doi.org/10.1111/j.1468-2494.2011.00686.x
Autor:
Tatiane Alfonso de Araujo, Valdir Souza Ferreira, Antonio Marcos Jacques Barbosa, Magno Aparecido Gonçalves Trindade
Publikováno v:
Microchemical Journal. 98:297-302
In this paper we present a new electroanalytical method for determination of ceftiofur based on the hydrolysis of this antibiotic in 0.04 mol L−1 Britton–Robinson buffer at pH 10 and 60 °C for 60 min (reduction peak at − 0.70 V). Conditions we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba1c4e426a9367359aaaa3e36bdcde39
https://doi.org/10.1016/j.microc.2011.02.014
https://doi.org/10.1016/j.microc.2011.02.014
Autor:
Valdir Souza Ferreira, Luiz Henrique Viana, Antonio Marcos Jacques Barbosa, Tatiane Alfonso de Araujo
Publikováno v:
Fuel. 90:707-712
This paper reports an electroanalytical method developed for tert-butylhydroquinone (TBHQ) determination in biodiesel in the presence of surfactant Triton X-100 (T-100). T-100 was shown to improve the electroanalytical signal and its use was decisive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49a1a8e644640cc412c00f49eb7a7b65
https://doi.org/10.1016/j.fuel.2010.09.022
https://doi.org/10.1016/j.fuel.2010.09.022
Autor:
Antonio Marcos Jacques Barbosa, Magno Aparecido Gonçalves Trindade, Valdir Souza Ferreira, Tatiane Alfonso de Araujo
Publikováno v:
Journal of Applied Electrochemistry. 41:249-255
A simple electroanalytical method was developed to determine the antibiotic ceftiofur (CF) in milk. The method is based on the adsorptive accumulation of the drug on a hanging mercury-drop electrode (HMDE) and the accompanying initiation of a negativ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::550920ce7a3188e771e75746049e6c0f
https://doi.org/10.1007/s10800-010-0232-5
https://doi.org/10.1007/s10800-010-0232-5
Autor:
Valdir Souza Ferreira, Nilva Ré Poppi, Jorge Luiz Raposo, Bruna Milca Lenzi Armondes, Juliano Carvalho Cardoso, Tatiane Alfonso de Araujo
Publikováno v:
Microchemical Journal. 85:301-307
The voltammetric behavior of 4-methylbenzelidene camphor (MBC) was studied by square wave voltammetry (SWV) using mercury electrode. The experimental condition that provided the highest peak current with the best reduction signal definition of MBC wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40b6069fecb679a8852416ad2b27a2fe
https://doi.org/10.1016/j.microc.2006.07.006
https://doi.org/10.1016/j.microc.2006.07.006
Autor:
Luiz Henrique Viana, Tatiane Alfonso de Araujo, Valdir Souza Ferreira, Magno Aparecido Gonçalves Trindade, Adriana Garabini de Freitas Andrade, João Batista Gomes de Souza, Ricardo Pini Caramit
Publikováno v:
Orbital: The Electronic Journal of Chemistry, Vol 7, Iss 2, Pp 87-98 (2015)
In this work, different procedures were compared for the extraction of synthetic antioxidants such as propyl gallate (PG), tert-Butylhydroquinone (TBHQ), 3-tert-butyl-4-hydroxyanisole (BHA) and 3,5-di-tert-butyl-4 hydroxytoluene (BHT) from biodiesel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::032651c4eddac0648afd4c8e8fd214d3
https://doi.org/10.17807/orbital.v7i2.672
https://doi.org/10.17807/orbital.v7i2.672