Garcia I L, Aviles J M, Cordoba M H
Department of Analytical Chemistry, Faculty of Chemistry, University of Murcia, Murcia, Spain.
Talanta. 1986 May;33(5):411-4. doi: 10.1016/0039-9140(86)80107-2.
Sensitive spectrophotometric and spectrofluorimetric procedures for the determination of palladium have been developed, based on solvent-extraction of the ion-pair formed between Rhodamine B and the anionic complex of Pd(II) with thiocyanate. With an organic to aqueous phase-volume ratio of 1:5, the molar absorptivity is 9.0 x 10(4) l.mole(-1).cm(-1) and the absorbance of the reagent blank is 0.026. Spectrophotometrically, palladium can be determined in the range 0.1-8.8 mug. Spectrofluorimetrically, it can be determined over the range 0.04-1.5 mug. The spectrophotometric procedure has been applied to the determination of palladium in dental alloys, organopalladium compounds and hydrogenation catalysts.
基于罗丹明B与Pd(II)的硫氰酸根阴离子络合物形成的离子对的溶剂萃取，开发了用于测定钯的灵敏分光光度法和荧光分光光度法。在有机相与水相体积比为1:5时，摩尔吸光系数为9.0×10(4) l·mol(-1)·cm(-1)，试剂空白的吸光度为0.026。分光光度法可测定0.1 - 8.8微克范围内的钯。荧光分光光度法可测定0.04 - 1.5微克范围内的钯。该分光光度法已应用于牙科合金、有机钯化合物和氢化催化剂中钯的测定。
