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Flow-injection analysis with a linear pH gradient and diode-array detection applied to organic dyes

✍ Scribed by Ch.-H. Fischer; J.G. Rabe

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 554 KB
Volume: 284
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(93)85309-8

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✦ Synopsis

Ahstraet

Organic dyes were identified using flow-injection analysis with a linear pH gradient and diode-array detection. The identification is based on three independently determined parameters, the two optical absorption spectra measured in acidic and alkaline solution and the pH range of their conversion near the pK values. Binary mixtures can also be analysed. The detection limit of the method was found to be 100 ng for Cnitrophenol as an example. The possibility of quantitative analyses is discussed.

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