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2010•Chinese Journal of Analysis LaboratoryRequires access

Catalytic kinetic spectrophotometric determination of trace palladium with sensitization effect of surfactant

Xuejing Yang, Yang Ya-ling, Mousheng Liu, Xingzhi Xu

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Abstract

Based on the catalytic effect of the trace palladium(Ⅱ) on the oxidation reaction of indigo carmine by K2S2O8 in the tween-20 medium,a new catalytic kinetic spectrophotometric method has been developed for the determination of palladium(Ⅱ).The linear range of determination is 8×10-4～1.28×10-2 μg/mL and the detection limit is 5.3×10-9 g/L.The apparent activation energy is 53.92 kJ/mol.The method has been used for the determination of palladium in mineral samples with satisfactory results.

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What this paper is about

Based on the catalytic effect of the trace palladium(Ⅱ) on the oxidation reaction of indigo carmine by K2S2O8 in the tween-20 medium,a new catalytic kinetic spectrophotometric method has been developed for the determination of palladium(Ⅱ).The linear range of determination is 8×10-4～1.28×10-2 μg/mL and the detection limit is 5.3×10-9 g/L.The apparent activation energy is 53.92 kJ/mol.The method has been used for the determination of palladium in mineral samples with satisfactory results.

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Available abstract

Based on the catalytic effect of the trace palladium(Ⅱ) on the oxidation reaction of indigo carmine by K2S2O8 in the tween-20 medium,a new catalytic kinetic spectrophotometric method has been developed for the determination of palladium(Ⅱ).The linear range of determination is 8×10-4～1.28×10-2 μg/mL and the detection limit is 5.3×10-9 g/L.The apparent activation energy is 53.92 kJ/mol.The method has been used for the determination of palladium in mineral samples with satisfactory results.

Key concepts: Chemistry, Palladium, Indigo carmine, Catalysis, Detection limit, Linear range, Kinetic energy, Activation energy

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