Spectrophotometric and spectrofluorimetric determination of the ternary complexes of cadmium(l1) and zinc(ll) with 2,2’-Bipyridine and Rose Bengal Extra

Citation

Ishak, Che Fauziah and Pflaum, Ronald T. (1988) Spectrophotometric and spectrofluorimetric determination of the ternary complexes of cadmium(l1) and zinc(ll) with 2,2’-Bipyridine and Rose Bengal Extra. Analyst, 113. pp. 941-944. ISSN 0003-2654; ESSN: 1364-5528

Abstract

A sensitive and selective ternary complex system has been developed for the determination of cadmium(II) and zinc(II). This system consists of the metal ion. an organic base, 2. 2,2‘-bipyridine,and the fluorescein dye Rose Bengal Extra (RBE). The ternary complexes of both cadmium(l1) and zinc(ll) exhibit a sensitivity or molar absorptivity of 1.03 x lo5 and 9.97 x lo4 I mol-1 cm-1, respectively. Preliminary studies showed an enhancement of the secondary fluorescence spectra of the bipyridine - RBE complex system for cadmium(l1) and zinc(l1). This enhancement is the basis of the fluorimetric determination of cadmium(l1) and zinc(l1). This metal ion - bipyridine - RBE system has a linear fluorescence calibration range from 1.0 X 10-6 to 14.0 X 10-6 M (0.06-0.91 p.p.m. Zn” and 0.11-1.54 p.p.m. Cd11)

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Additional Metadata

Item Type:	Article
Divisions:	Universiti Pertanian Malaysia
Publisher:	Royal Society of Chemistry
Keywords:	Cadmium(II) and zin(ll) determination; Spectrophotometry; Spectrofluorimetry; Ternary complex system; Rose Bengal Extra
Depositing User:	Azhar Abdul Rahman
Date Deposited:	17 Apr 2015 01:04
Last Modified:	17 Apr 2015 01:06
URI:	http://psasir.upm.edu.my/id/eprint/33788
Statistic Details:	View Download Statistic

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