N. Obarski et Z. Marczenko, SIMULTANEOUS DETERMINATION OF GOLD, PLATINUM AND PALLADIUM AS BROMIDECOMPLEXES USING DERIVATIVE SPECTROPHOTOMETRY, Chemia Analityczna, 40(3), 1995, pp. 385-393
Derivative spectrophotometry was used for simultaneous determination o
f Au(III), Pt(IV) and Pd(II) as bromide complexes in a perchloric acid
medium. Optimum conditions were developed for the formation of the br
omide complexes (0.3 % NaBr, 0.01 mol l(-1) HClO4) and calculation of
the derivatives of the chosen order. The derivatives were calculated n
umerically using the Savitzky-Golay method. The proposed method has be
en applied for simultaneous determination of Au, Pt, and Pd in synthet
ic mixtures and in multi-element standard solution 26H SM-40.