Artigo
Determinação seletiva de tributilestanho na presença de Sn(IV) em amostras ambientais usando HG-ICP OES e Saccharomyces cerevisiae como material sorvente
Fecha
2010-01-01Registro en:
Química Nova. Sociedade Brasileira de Química, v. 33, n. 7, p. 1529-1534, 2010.
0100-4042
10.1590/S0100-40422010000700020
S0100-40422010000700020
WOS:000282522800020
S0100-40422010000700020.pdf
6348835539744984
0000-0003-2774-9727
Autor
Universidade Estadual Paulista (Unesp)
Resumen
A method for selective determination of tributyltin in the presence of Sn(IV) by combining hydride generation inductively coupled plasma optical emission spectrometry (HG-ICP OES) and solid phase extraction (SPE) using baker's yeast is proposed. The procedure is based on selective retention of TBT by the yeast at pH = 6. Detection limit of 1.9 µg L-1 and quantification limit of 6.3 µg L-1 were obtained. TBT and San(IV) were determined in the range of 0-25 µg L-1 and the proposed approach was applied to analyze river water, sea water and biological extracts, with recoveries of 114, 101 and 86%, respectively.