Fluorimetric determination of beryllium with pyridoxal-5-phosphate.
A simple, rapid and selective method for the determination of beryllium with pyridoxal-5-phosphate has been developed. The system is only fluorescent (lambda(ex) 360, lambda(em) 460 nm) in the presence of a nitrogenous base such as ammonia, ethylenediamine or pyridine, owing to the possible formation of a ternary complex. The calibration graph is linear over the range 8-60 ng ml . The high selectivity of the method permits the determination of beryllium in various types of alloys.
Petidier
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Department of Analytical Chemistry, Faculty of Sciences, University of Cordoba, Cordoba, Spain.
Rubio
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Gomez-Hens
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Valcarcel
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