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On-line photochemical derivatization and flow-injection spectrophotometric determination of ergonovine maleate

✍ Scribed by A.Mellado Romero; G.Gomez Benito; J.Martínez Calatayud

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
476 KB
Volume
282
Category
Article
ISSN
0003-2670

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✦ Synopsis

A flow-injection manifold is proposed for the on-line photochemical derivatization of ergonovine maleate with application to pharmaceutical formulations. The procedure is based on the reaction with p-dhnethylaminobenzaIdehyde in presence of iron and sulphuric acid medium. The reaction rate is improved by irradiation of the solution with a mercury lamp (254.0 nm). The calibration graph is linear over the range 3-74 pg ml-' ergonovine, with a mid-range R.S.D. of 1.7% and a sample throughput of 34 h-'. The influence of foreign compounds was tested.

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