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Colorimetric determination of 1-(4′-nitrophenyl)-2-aminopropane-1, 3-diol with 2,4,6-trinitrobenzenesulfonic acid in the presence of chloramphenicol

✍ Scribed by P. G. Pietta; D. Agnellini; M. Pace

Publisher: John Wiley and Sons
Year: 1979
Tongue: English
Weight: 204 KB
Volume: 68
Category: Article
ISSN: 0022-3549
DOI: 10.1002/jps.2600681231

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✦ Synopsis

A colorimetric method based on the interaction between the chloramphenicol degradation product 1-(4'-nitrophenyl)-2-aminopropane-1,3-diol and the 2,4,6-trinitrobenzenesulfonic acid reagent was developed. Analytical solutions were reacted with the reagent at pH 9.1 for 20 min at room temperature, and the resulting color was measured at 340 nm. A linear relationship between absorbance and concentration occurred within the 5--25-micrograms/ml range under the conditions studied. Replicate analyses were in good agreement. An average recovery of 99.4 +/- 0.4% was obtained for the synthetic mixtures.

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