Spectrophotometric determination of nickel with p-acetylarsenazo.
A spectrophotometric method for the determination of trace amounts of nickel is described. At pH 6, nickel reacts with p-acetylarsenazo to form a 1:2 coloured complex with an absorption maximum at 630 nm. The apparent 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 microg/ml. The proposed method is selective, sensitive and can be applied to the determination of nickel in aluminum alloy.
Zhao
S L
SL
Department of Polymer Chemical Engineering, Shenyang Institute of Chemical Technology, Shenyang, China.
Xia
X Q
XQ
Ma
H R
HR
Xi
H J
HJ