Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Viviane Gomes Bonifácio"'
Autor:
Lúcia Daniela Wolf, Mônica Helena M. T. Assumpção, Alexandro Alves Madi, Viviane Gomes Bonifácio, Orlando Fatibello-Filho
Publikováno v:
Eclética Química, Vol 36, Iss 2, Pp 69-83 (2018)
Neste artigo é descrito a construção de um calorímetro simples para o desenvolvimento de um protocolo com o qual é possível determinar a entalpia de dissolução de sais. Para isto, foram utilizadas soluções de sais de carbonato de sódio, bi
Externí odkaz:
https://doaj.org/article/c7419abf41f54eaeb0f87d951d25eaff
Autor:
Mônica Helena Marcon Teixeira Assumpção, Lucia Daniela Wolf, Viviane Gomes Bonifácio, Orlando Fatibello-Filho
Publikováno v:
Eclética Química, Vol 35, Iss 2, Pp 63-69 (2018)
In this article the construction of a simple calorimeter (with easily acquired materials) for the determination of the enthalpy of neutralization at constant pressure of acid-base reactions is described. Solutions of weak and strong acids and bases,
Externí odkaz:
https://doaj.org/article/3080e29b41fd470bb8e9cc544c236869
Autor:
Fernanda Helena Salami, Viviane Gomes Bonifácio, Orlando Fatibello-Filho, Luiz Humberto Marcolino-Jr
Publikováno v:
Química Nova, Vol 32, Iss 1, Pp 112-115 (2009)
A multicommuted method for determination of chlorine in water samples using a 100-cm cell was developed. In this method, orto-Tolidine reacts with chlorine and the product was monitored at 438 nm. The analytical curve for chlorine was linear in conce
Externí odkaz:
https://doaj.org/article/5d9869abd1924740b5d0c6b279648704
Autor:
Luiz H. Marcolino-Jr., Viviane Gomes Bonifácio, Orlando Fatibello-Filho, Marcos F. S. Teixeira
Publikováno v:
Química Nova, Vol 28, Iss 5, Pp 783-787 (2005)
A simple flow injection procedure was developed for determining dipyrone (1-phenyl-2,3-dimethyl-4-methylaminomethano-5-pyrazolone sodium, metamizol, analgin) in pharmaceutical formulations. The determination is based on the reduction of Ag+ ions to A
Externí odkaz:
https://doaj.org/article/0aee6478da154822ae8ef805072e30a8
Autor:
Geiser Gabriel Oliveira, Déborah Christine Azzi, Bruno C. Janegitz, Viviane Gomes Bonifácio, Luiz H. Marcolino-Junior, Orlando Fatibello-Filho
Publikováno v:
Eclética Química, Vol 41, Iss 1, Pp 32-42 (2018)
This paper reports a flow injection chemiluminescence method involving multicommutation for rutin determination in pharmaceutical formulations. The method is based on the oxidation of rutin by sodium hypochlorite which decreases the signal magnitude
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20281c6b61a5c28539eaa4d5e956a3bf
https://revista.iq.unesp.br/ojs/index.php/ecletica/article/view/36
https://revista.iq.unesp.br/ojs/index.php/ecletica/article/view/36
Autor:
Viviane Gomes Bonifácio, Fernando Campanhã Vicentini, Luiz H. Marcolino-Junior, Bruno C. Janegitz, Orlando Fatibello-Filho
Publikováno v:
Canadian Journal of Chemistry. 94:604-607
A novel flow injection spectrophotometric determination of ranitidine in pharmaceuticals is reported. The method is based on a compound formed in a reaction using ranitidine with and potassium permanganate in neutral media, which can be monitored at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd07e4d7dcb403bcad34e55bc07e472c
https://doi.org/10.1139/cjc-2015-0571
https://doi.org/10.1139/cjc-2015-0571
Publikováno v:
Open Chemistry, Vol 11, Iss 11, Pp 1830-1836 (2013)
In this work, a flow-injection spectrophotometric method for dipyrone determination in pharmaceutical formulations was developed. Dipyrone sample solutions were injected into a carrier stream of deionized water and the reaction was carried out in a s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db5b6c96dd43a4b190289cca81248e06
https://doi.org/10.2478/s11532-013-0312-6
https://doi.org/10.2478/s11532-013-0312-6
Autor:
Orlando Fatibello-Filho, Fernanda Helena Salami, Viviane Gomes Bonifácio, Luiz H. Marcolino-Junior
Publikováno v:
Analytical Letters. 44:298-309
A flow-injection method for the spectrophotometric determination of sulfate in natural water samples using a solid-phase reactor with barium chloranilate (BaC6Cl2O4) immobilized in a polyester resin is presented. This procedure is based on the format
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1b5ed844dd849f239b86d7db09dd363
https://doi.org/10.1080/00032719.2010.500774
https://doi.org/10.1080/00032719.2010.500774
Autor:
Lúcia Daniela Wolf, Mônica Helena M. T. Assumpção, Alexandro Alves Madi, Viviane Gomes Bonifácio, Orlando Fatibello-Filho
Publikováno v:
Eclética Química, Vol 36, Iss 2, Pp 69-83 (2011)
Neste artigo é descrito a construção de um calorímetro simples para o desenvolvimento de um protocolo com o qual é possível determinar a entalpia de dissolução de sais. Para isto, foram utilizadas soluções de sais de carbonato de sódio, bi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doajarticles::52f146443dbf203bcbb10c2660f1a41d
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702011000200004
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702011000200004
Publikováno v:
Analytical Letters. 42:973-988
A novel, simple, and rapid flow-injection method for the spectrophotometric determination of captopril in pharmaceutical products, using a solid-phase reactor with silver chloranilate (Ag2C6Cl2O4) immobilized in a polyester resin, is presented. This
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60fa68c81037ec2f51ca1dfc1f801aa7
https://doi.org/10.1080/00032710902722095
https://doi.org/10.1080/00032710902722095