Abstract
A highly selective spectrophotometric method is described for the determination of 0.05–0.55 mg mercury using 5,6-diphenyl-2,3-dihydro- asym-triazine-3-thione (DDTT). The yellow 1:2 complex is extractable into chloroform at pH 10, having a maximum absorbance at 430 nm, ϵ = 8.1 × 10 3 M −1 cm −1. The only interfering ions are CN −, Tl(I), and Pd(II). The method was applied to the determination of mercury in organomercury compounds and to the estimation of the solubility product of mercurous sulfate.
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