Ma. Garcia et al., METAL CYANIDE CONTROL IN HYDROMETALLURGICAL PROCESSING OF GOLD ORES BY MULTIVARIATE CALIBRATION PROCEDURES, Analytica chimica acta, 353(1), 1997, pp. 123-131
This paper is focused on the development of a spectrophotometric metho
d and the calibration procedure for metal cyanide control through the
different steps of the hydrometallurgical processing of gold ores. The
spectrophotometric procedure is based on multivariate calibration for
the simultaneous determination of different components of the leached
solutions (Au(CN)(2)(-), Fe(CN)(6)(4-), Cu(CN)(4)(3-) and Ni(CN)(4)(2
-)) and uses the spectral features of these species in the UV region.
The method was applied to the analysis of leached solutions from gold
ores and samples from ion exchange adsorption column experiments. The
results obtained with the spectrophotometric procedure were in good ag
reement with those obtained by inductively coupled plasma-atomic emiss
ion spectroscopy. (C) 1997 Elsevier Science B.V.