Fluorimetric reaction of palladium (II) with tartrazine and surfactants and its application

Abstract

The sensitization of various surfactants on the fluorometric reaction of Pd(II) and food color Tartrazine (TTZ) was compared. Cetyltrimethylammonium bromide (CTMAB) is the best one. The mechanism of sensitization of different surfactants for fluorometric reaction of the 1:2 Pd(II)-TTZ complex is discussed. The role of the cationic surfactants in the micellar fluorescent reaction was due to the ion-assocn. interactions and the protective actions of the micelles. The optimum conditions of fluorometric determination of Pd(II) was established. The sensitivity of the reaction increases 6-fold in the presence of CTMAB. The limit of determination is 8.0 ?10-4 mg/mL. Calibration curve is linear for 0.1-8.0 Pd mg/25 mL. Pd was determine in slags and Pd concs. with satisfactory results.

Key words: SURFACTANTS, REACTION MECHANISM, PALLADIUM, PALLADIUM, FLUOROSPECTROPHOTOMETRY, TARTRAZINE, SENSITIZING

CLC Number:

O651
TG46

Cite this article

WEN ZHIMING;WANG HUAIGONG. Fluorimetric reaction of palladium (II) with tartrazine and surfactants and its application[J]. Acta Chimica Sinica, 1990, 48(3): 256-261.

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