4(5)-D-Arabinotetrahydroxybutylimidazoline-2-thione (THBIT), a new reagent for the spectrophotometric determination of palladium |
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Authors: | C Fernández Pereíra J Gasch Gómez |
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Institution: | (1) Department of Chemistry, School of Industrial Engineering, University of Seville, Seville, Spain |
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Abstract: | Summary 4(5)-D-Arabinotetrahydroxybutylimidazoline-2-thione, THBIT, is proposed as a new reagent for the spectrophotometric determination of Pd(II). Pd(II) forms 11, 12 and 14 complexes with THBIT. The system conforms to Beer's law up to 5g/ml palladium concentration in aqueous medium (molar absorptivity, 1.99×104 l· mole–1·cm–1 at 338 nm). The most serious interference is from Hg(II), Os(VIII), Ru(IV), Cr(VI), V(V) and S2O3
2–. The method has been used successfully for the determination of palladium in catalysts and synthetic samples. |
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