W+Rh as permanent chemical modifier in simultaneous atomic absorption spectrometry: interference studies on As, Cd, Pb and Se determination

W+Rh as permanent chemical modifier in simultaneous atomic absorption spectrometry: interference studies on As, Cd, Pb and Se determination

A systematic study of Na+, K+, Ca2+, Mg2+, Cl-, NO3-, SO4(2-) and PO4(3-) interference on the simultaneous atomization of As, Cd, Pb and Se was carried out using an electrothermal atomic absorption spectrometer. The mixture 250 mg W + 250 mg Rh was thermally deposited on the graphite tube platform a...

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Bibliographic Details
Main Authors: Nomura Cassiana S, Correia Paulo R. M, Oliveira Pedro V, Oliveira Elisabeth
Format: Article
Language:English
Published: Sociedade Brasileira de Química 2004-01-01
Series:Journal of the Brazilian Chemical Society
Subjects:
simultaneous atomic absorption spectrometry
interference
permanentchemical modifier
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532004000100013

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http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532004000100013

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