Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Ana Paula G. Gervasio"'
Autor:
Ana Paula G. Gervasio, André F. Lavorante, Maria Carolina B. Moraes, Maria Fernanda Giné, Carlos E. S. Miranda, Emanuel Carrilho
Publikováno v:
Química Nova, Vol 26, Iss 1, Pp 65-74 (2003)
The most important features of the CE-ICP hyphenation, as well as its advantages and drawbacks as a tool for speciation are discussed. The fundamental principles of capillary electrophoresis and inductively coupled plasma mass spectrometry are also p
Externí odkaz:
https://doaj.org/article/284d07b9f9eb4d14877c9dcdc8be4620
Autor:
Ana Paula G. Gervasio, Boaventura Freire dos Reis, Maria Fernanda Giné, Henrique Bergamin Filho
Publikováno v:
Química Nova, Vol 23, Iss 4, Pp 482-486 (2000)
Externí odkaz:
https://doaj.org/article/b2399639ce9c4416b28bdf9853acc36c
Autor:
Ana Paula G. Gervasio, Gilmara Caseri de Luca, Amauri Antonio Menegário, Henrique Bergamin Filho, Boaventura Freire dos Reis, Ivan Gonçalves de Souza
Publikováno v:
Química Nova, Vol 22, Iss 5, Pp 669-673 (1999)
An on-line electrodissolution procedure implemented in a flow injection system for determination of copper, zinc and lead in brasses alloys by ICP-AES is described. Sample dissolution procedure was carried out by using a PTFE chamber and a DC power s
Externí odkaz:
https://doaj.org/article/142e80ada2b64371a94c44f7aed6c1d9
Autor:
Eloisa Ap. Mocheuti Kronka, Boaventura Freire dos Reis, Jonas A. Vieira, Telma Blanco, Ana Paula G. Gervasio
Publikováno v:
Química Nova, Vol 20, Iss 4, Pp 372-376 (1997)
A flow system based on multicommutation and binary sampling process was developed to implement the sample zone trapping technique in order to increase the spectrophotometric analytical range and to improve sensitivity. The flow network was designed w
Externí odkaz:
https://doaj.org/article/fecabb284da04a459ede295e2af52d6d
Autor:
Silvia R.P. Meneses, Paula R. Fortes, Ana Paula G. Gervasio, Elias A.G. Zagatto, Carlos Eduardo Saraiva Miranda
Publikováno v:
Talanta. 69:927-931
A flow-injection procedure for simultaneous spectrophotometric determination of tungsten and molybdenum in steel alloys is proposed. The method exploits the catalytic effects of Mo(VI) and W(VI) on the rate of iodide oxidation by hydrogen peroxide un
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8945638847ed093ac628f12f20f14a1
https://doi.org/10.1016/j.talanta.2005.11.042
https://doi.org/10.1016/j.talanta.2005.11.042
Autor:
Ana Paula G. Gervasio, Maria Fernanda Giné, André F. Lavorante, Carlos Eduardo Saraiva Miranda, Emanuel Carrilho, Maria C. B. Moraes
Publikováno v:
Analytical Letters. 37:2501-2513
A home‐made capillary electrophoresis (CE) system with an alternative interface for hydrodynamic injection of sample solutions is described. The interface is an acrylic chamber whose efficiency of injection was evaluated by the separation of cystei
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6ef42749736165c043f47f27ee35949
https://doi.org/10.1081/al-200031132
https://doi.org/10.1081/al-200031132
Autor:
Maria Fernanda Giné, Cláudia de M. Bellato, Emanuel Carrilho, Marli Fátima Fiore, André F. Lavorante, Carlos Eduardo Saraiva Miranda, Ana Paula G. Gervasio
Publikováno v:
Analytical Sciences. 19:1611-1616
A home-made system hyphenating capillary electrophoresis with an inductively coupled plasma mass spectrometer (CE-ICP-MS) for cadmium speciation of protein-binding and free cadmium ions in solution is presented. The CE-ICP-MS interface consisted of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3482da85ab6db0d3e37fc1af06ea678e
https://doi.org/10.2116/analsci.19.1611
https://doi.org/10.2116/analsci.19.1611
Autor:
Carlos Eduardo Saraiva Miranda, Maria Fernanda Giné, Amauri A. Menegário, Ana Paula Packer, Ana Paula G. Gervasio, Boaventura F. Reis
Publikováno v:
Analytica Chimica Acta. 485:145-153
A flow injection system combining electrolytic dissolution (ED) and programmable isotope dilution (ID) for determination of lead in high-purity copper by inductively coupled plasma mass spectrometry (ED-ID-ICP-MS) is proposed. ED was performed employ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e0eb9604a9ca0bbb2105da555704d5f
https://doi.org/10.1016/s0003-2670(03)00425-2
https://doi.org/10.1016/s0003-2670(03)00425-2
Autor:
Gilmara Caseri de Luca, Boaventura F. Reis, Cristiane A. Tumang, Ana Paula G. Gervasio, Carlos Eduardo Saraiva Miranda, Luis Fernando P. Campos
Publikováno v:
Journal of the Brazilian Chemical Society. 12:81-86
A flow-injection procedure for spectrophotometric determination of phosphorus in electrolytic iron and iron alloys is proposed. The method is based on the ammonium molybdate reaction followed by stannous chloride reduction in acidic medium. In order
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87935de18eae3d058a6418066d949717
https://doi.org/10.1590/s0103-50532001000100011
https://doi.org/10.1590/s0103-50532001000100011
Autor:
Amauri A. Menegário, Henrique Bergamin Filho, Ana Paula G. Gervasio, Boaventura F. Reis, Gilmara Caseri de Luca
Publikováno v:
Analytica Chimica Acta. 405:213-219
A flow injection procedure involving on-line anodic electrolytic dissolution for Fe, W, Mo, V and Cr determination in tool steels by inductively coupled plasma atomic emission spectrometry is proposed. The sample is dissolved in an electrolytic cell
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cabc2a3b056a35dc06e3b4e97ca88e49
https://doi.org/10.1016/s0003-2670(99)00680-7
https://doi.org/10.1016/s0003-2670(99)00680-7