Determination of cobalt at picogram levels by high-performance liquid chromatography with chemiluminescence detection

A simple cation-exchange chromatographic system was used to separte cobalt from other metal ions. The cobalt thus separated was detected by the luminol chemiluminescence reaction using a spectrofluorimeter as the detector. A 3σ detection limit of 0.5 ng l −1 was achieved, without the need for precon...

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Bibliographic Details
Published in:Analytica chimica acta 1989, Vol.217 (1), p.157-163
Main Authors: Jones, Phil, Williams, Tim, Ebdon, Les
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Chromatographic methods and physical methods associated with chromatography
Exact sciences and technology
Other chromatographic methods
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Summary:A simple cation-exchange chromatographic system was used to separte cobalt from other metal ions. The cobalt thus separated was detected by the luminol chemiluminescence reaction using a spectrofluorimeter as the detector. A 3σ detection limit of 0.5 ng l −1 was achieved, without the need for preconcentration, with a 200-μl sample. The system provided a linear analytical working range from 5 ng l −1 to 10 μg l −1. The cobalt content of a rice flour certified reference material was determined using the system and gave good agreement with the certificate value.
ISSN:0003-2670
1873-4324
DOI:10.1016/S0003-2670(00)80395-5