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Spectrophotometric and spectrofluorimetric determination of the ternary complexes of cadmium(II) and zinc(II) 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(II) and zinc(II) with 2,2′-bipyridine and rose bengal extra. The Analyst, 113 (6). pp. 941-944. ISSN 0003-2654; eISSN: 0003-2654

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′-bipyridine, and the fluorescein dye Rose Bengal Extra (RBE). The ternary complexes of both cadmium(II) and zinc(II) exhibit a sensitivity or molar absorptivity of 1.03 × 105 and 9.97 × 104 l mol-1 cm-1, respectively. Preliminary studies showed an enhancement of the secondary fluorescence spectra of the bipyridine - RBE complex system forcadmium(II) and zinc(II). This enhancement is the basis of the fluorimetric determination of cadmium(II) and zinc(II). This metal ion - bipyridine - RBE system has a linear fluorescence calibration range from 1.0 × 10-6 to 14.0 × 10 -6 M (0.06-0.91 p.p.m. ZnII and 0.11-1.54 p.p.m. Cd II).


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
DOI Number: https://doi.org/10.1039/AN9881300941
Keywords: Cadmium(II) and zinc(II) determination; Rose Bengal Extra; Spectrofluorimetry; Spectrophotometry; Ternary complex system
Depositing User: Ms. Azian Edawati Zakaria
Date Deposited: 20 Mar 2025 04:26
Last Modified: 20 Mar 2025 04:26
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1039/AN9881300941
URI: http://psasir.upm.edu.my/id/eprint/116191
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