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|Title:||Studies on the determination of palladium(II) by fluorescence quenching method with meso-tetra[ 4-(carboxymethy lenoxy)phenyl]porphyrin|
|Abstract:||The spectrofluorimetric determination of Pd(II) using meso-tetra[4-(carboxymethylenoxy)phenyl]porphyrin (TCMOPPH2) as an emission reagent has been investigated by measuring the decrease of its fluorescence intensity of the complexation of Pd(II)-TCMOPP. An emission peak of TCMOPPH2, which is decreased linearly by adding of Pd(II), occurs at 394 nm in aqueous solution with excitation at 306 nm. The fluorescence intensity vary linearly with the concentration of palladium(II) in the range 3.754×10-3 ~0.3625 μg/mL (SD = 0.034 for 10 times measurements) and the detection limit down to 2.715×10-4 μg/mL. The interference of other noble metals and some of inorganic ions have been described, and the quenching mechanism has also been investigated according to the Stern-Volmer equation.|
|Appears in Collections:||IJC-A Vol.41A(03) [March 2002]|
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