SPECTROPHOTOMETRIC DETERMINATION OF NICKEL WITH P-ACETYLARSENAZO

Authors
ZHAO SL XIA XQ MA HR XI HJ
Citation
Sl. Zhao et al., SPECTROPHOTOMETRIC DETERMINATION OF NICKEL WITH P-ACETYLARSENAZO, Talanta, 41(8), 1994, pp. 1353-1356
Citations number
23
Journal title
Talanta
ISSN journal
00399140 → ACNP
Volume
41
Issue
8
Year of publication
1994
Pages
1353 - 1356
Database
ISI
SICI code
0039-9140(1994)41:8<1353:SDONWP>2.0.ZU;2-Y
Abstract
A spectrophotometric method for the determination of trace amounts of nickel is described. At pH 6, nickel reacts with p-acetylarsenazo to f orm a 1:2 coloured complex with an absorption maximum at 630 nm. The a pparent molar absorptivity is 6.5 x 10(4) l.mol-1.cm-1. Beer's law is obeyed over the concentration range of 0-0.8 mug/ml. The proposed meth od is selective, sensitive and can be applied to the determination of nickel in aluminum alloy.