Spectrophotometric Determination of Gold(III) Using 2-Hydroxy-3-Methoxy Benzaldehyde Thiosemicarbazone as a Chromophoric Reagent

Figure 2

[Au(III)] = [HMBATSC] = 5 × 10⁻³ M; other conditions as in standard procedure.

(a) Job’s curve

(b) Molar ratio plot