3D Fluorescence Characterization of Synthetic Organic Dyes—Effect of pH

Autor:	Richard Newman, Sarah Flynn, Leonard J. Soltzberg, Vera Kirch
Rok vydání:	2013
Předmět:	Psychiatry and Mental health Chromatography medicine.diagnostic_test Chemistry Spectrophotometry Extraction (chemistry) Ph control medicine Fluorescence Fluorescence spectra Nuclear chemistry Characterization (materials science)
Zdroj:	American Journal of Analytical Chemistry. :531-576
ISSN:	2156-8278 2156-8251
DOI:	10.4236/ajac.2013.410067
Popis:	The fingerprint character and high sensitivity of 3D UV-vis fluorescence spectra offer special advantages for identification of dyes in a museum or forensic setting. However, the extraction process is likely to affect the pH of the medium and, in some cases, may alter the dye itself. We report a study of 65 dyes extracted from wool fibers that are part of the Schweppe Collection of Important Synthetic Dyes. The 3D fluorescence spectra of the dye extracts at pH 1 and pH 14 are compared with the same dyes from the Schweppe solution library, run under the same conditions, as well as with the 3D fluorescence spectra of the dyes taken directly from the solution library without pH control. This analysis leads to guidelines for the use of such spectra in identifying unknown dye samples.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a3b60d41df9cff8ea39ba27e008cd404 https://doi.org/10.4236/ajac.2013.410067 Zobrazit plný text záznamu