Spectrophotometric determination of bismuth with N,N′-bis(2-hydroxyethyl)glycine

Bismuth(III) can be determined with N,N′-bis(2-hydroxyethyl)glycine as complexometric agent in the pH range 7–8.5. Beer's law is obeyed from 1 to 70 μg ml −1 of bismuth with a minimum photometric error of 2.7%; the molar absortivity is 4.4 × 10 3 liters mol −1 cm −1. The stoichiometric ratio of...

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Bibliographic Details
Published in:Microchemical journal 1988-04, Vol.37 (2), p.200-202
Main Authors: Lopez, A.Botana, Portal, A.Gonzalez, Martinéz, F.Bermejo
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Exact sciences and technology
Spectrometric and optical methods
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Summary:Bismuth(III) can be determined with N,N′-bis(2-hydroxyethyl)glycine as complexometric agent in the pH range 7–8.5. Beer's law is obeyed from 1 to 70 μg ml −1 of bismuth with a minimum photometric error of 2.7%; the molar absortivity is 4.4 × 10 3 liters mol −1 cm −1. The stoichiometric ratio of bismuth(III) to N,N′-bis(2-hydroxyethyl)glycine is 1:2. The proposed method has been applied to the determination of bismuth in pharmaceutical formulations, with good results.
ISSN:0026-265X
1095-9149
DOI:10.1016/0026-265X(88)90189-0