Výsledky vyhledávání - "C. C. F. Padilha"

Akademický článek

Determination of Hg in water by CVAAS using 2-aminothiazole modified silica

Autor: F. A. Silva, I. L. de Alcântara, P. S. Roldan, C. C. F. Padilha, A. B. de Araújo, J. P. S. Valente, A. O. Florentino, P. M. Padilha

Publikováno v: Eclética Química, Vol 30, Iss 3, Pp 47-55 (2018)

This paper discusses a rapid and sensitive method developed to determine trace levels of mercury in natural water samples by cold vapor atomic absorption spectrometry using a preconcentration system composed by mini-column packed with 100 mg of 2-ami

Externí odkaz: https://doaj.org/article/93e5402d844747bf8a597f5b58a7d416

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Akademický článek

Lability of Cd, Cr, Cu, Mn and Pb complexed by aquatic humic substances

Autor: G. R. Castro, C. C. F. Padilha, J. C. Rocha, J. P. S. Valente, A. de O. Florentino, P. M. Padilha

Publikováno v: Eclética Química, Vol 30, Iss 2, Pp 45-51 (2018)

The lability of Cd(II), Cr(III), Cu(II), Mn(II) and Pb(II) complexed by humic substances (HSs) was investigated by means of ion exchange on cellulose modified with p-aminobenzoic groups (Cell-PAB), using a batch procedure. The HSs were extracted from

Externí odkaz: https://doaj.org/article/f07ced7059ff46f288c67561465e70e5

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Determination of Hg in water by CVAAS using 2-aminothiazole modified silica Determinação de mercúrio em águas por CVAAS empregando sílica modificada por 2-aminotiazol

Autor: F. A. Silva, I. L. de Alcântara, P. S. Roldan, C. C. F. Padilha, A. B. de Araújo, J. P. S. Valente, A. O. Florentino, P. M. Padilha

Publikováno v: Eclética Química, Vol 30, Iss 3, Pp 47-55 (2005)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doajarticles::6d4295cc9fff24226add5197cec4ec7e
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702005000300006

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Lability of Cd, Cr, Cu, Mn and Pb complexed by aquatic humic substances Labilidade de Cd, Cr, Cu, Mn e Pb complexados por substâncias húmicas aquáticas

Autor: G. R. Castro, C. C. F. Padilha, J. C. Rocha, J. P. S. Valente, A. de O. Florentino, P. M. Padilha

Publikováno v: Eclética Química, Vol 30, Iss 2, Pp 45-51 (2005)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doajarticles::9342b421f8d7aa78a36277a7631cb08a
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702005000200006

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Determination of Copper, Iron, Nickel and Zinc in fuel kerosene by FAAS after adsorption and pre-concentration on 2-aminothiazole-modified silica gel Determinação de cobre, ferro, níquel e zinco em querosene combustível após adsorção e preconcentração sobre sílica gel modificada com grupos 2-aminotiazol

Autor: P. S. Roldan, I. L. Alcântara, J. C. Rocha, C. C. F. Padilha, P. M. Padilha

Publikováno v: Eclética Química, Vol 29, Iss 2, Pp 33-40 (2004)

Silica gel chemically modified with 2-Aminotiazole groups, abbreviated as SiAT, was used for preconcentration of copper, zinc, nickel and iron from kerosene, normally used as a engine fuel for airplanes. Surface characteristics and surface area of th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doajarticles::4488654ebcee28e6b4cd147e98f256a1
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702004000200005

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