Artigo de Periódico
2-(2-Thiazolylazo)-p-Cresol (TAC) as a Reagent for the Spectrophotometric Determination of Titanium (IV)
Fecha
1993Registro en:
0026-3672
v. 111, n. 1-3
Autor
Ferreira, Sergio Luis Costa
Costa, Antonio Celso Spinola
Andrade, Henrique A. S.
Ferreira, Sergio Luis Costa
Costa, Antonio Celso Spinola
Andrade, Henrique A. S.
Institución
Resumen
The reaction between titanium(IV) and 2-(2-thiazolylazo)-p-cresol-
(TAC) in aqueous methanol media at apparent pH 4.0-5.6 results in a intensely
coloured complex that is stable for at least 2 h. The combining ratio is 1 : 1
cation : TAC. Beer's law is obeyed up to 5.0 #g/ml titanium(IV) at 580 nm. The
apparent molar absorptivity at 580 nm is 9.82.103 1.mole-l.cm -~ and the detection
limit obtained was 5 ng/ml titanium(IV). A spectrophotometric method
for the simultaneous determination of titanium and iron with TAC is proposed.