Spectrophotometric determination of aluminium with ferron and a quaternary ammonium salt.
The reproducibility of the ferron method for aluminium has been greatly improved by the addition of cetyltrimethylammonium chloride (CTMAC). The improvement is attributed to reduction of the reagent blank and increased stability of Al(ferron)(3-)(3). The aluminium-ferron complex formed in the presence of CTMAC has an absorption peak at 385 nm. The interference from iron can be eliminated by application of a correction based on measurement at two wavelengths.
Goto
K
K
Faculty of Engineering, Hokkaido University, Sapporo, Japan.
Tamura
H
H
Onodera
M
M
Nagayama
M
M