Chem. J. Chinese Universities ›› 1992, Vol. 13 ›› Issue (4): 462.

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Fluorescence Quenching Method for Determination of Trace Cadmium with Meso-Tetrakis-(Trimethylammoniumphenyl) Porphyrin

PAN Zu-ting, XU Mian-yi, LI Jia   

  1. Department of Chemistry, Wuhan University, Wuhan, 430072
  • Received:1991-01-29 Online:1992-04-24 Published:1992-04-24

Abstract: A fluorescence quenching method for determination of trace cadmium(Ⅱ) with meso-tetrakis-(trimethylammoniumphenyl) porphyrin in the presence of anionic surfactant (sodium lauryl sulfate, SDS) was studied.The maximum excitation appears at 415 nm with fluorescence occuring at 650 nm.The limit of detection is 3×10-4 ppm Cd(Ⅱ).Seven replicate determinations of solutions containing 0.20 μg Cd(Ⅱ) show a relative standard deviation of 4.1%.

Key words: Meso-tetrakis-(trimethylammoniumphenyl) porphyrin, Cadmium, Fluorescence quenching method

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