Spectrophotometric determination of microgram amounts of penicillins by solvent extraction with azure b

Nayak, Anant N. and Ramappa, P. G. and Yathirajan, H. S. and Manjappa, S. (1982) Spectrophotometric determination of microgram amounts of penicillins by solvent extraction with azure b. Analytica Chimica Acta, 134. 411 - 415. ISSN 0003-2670

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Official URL: https://doi.org/10.1016/S0003-2670(01)84219-7

Abstract

Penicillins are determined by means of ion-pair formation with azure B and extraction into chloroform: the absorbance of the extract is stable for several days. The apparent molar absorptivities for sodium penicillin G and potassium penicillin V at 634 nm are 3.91 × 103 and 1.25 × 104 l mol-1 cm-1, respectively. Calibration graphs are linear over the range 60–950 μg of sodium penicillin G and 40–600 μg of potassium penicillin V in 10 ml. The method is successfully applied to pharmaceutical preparations.

Item Type: Article
Subjects: C Chemical Science > Chemistry
Divisions: Department of > Chemistry
Depositing User: C Swapna Library Assistant
Date Deposited: 18 Oct 2019 06:58
Last Modified: 18 Oct 2019 06:58
URI: http://eprints.uni-mysore.ac.in/id/eprint/9282

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