Early synthetic dyes – a challenge for tandem mass spectrometry

Katarzyna Lech , Ewa Wilicka , Janina Witowska-Jarosz , Maciej Jarosz

Abstract

The present study concerns identification of early yellow synthetic dyes from silk fibers taken from the 1930 spring color palette of the Lyon Dyers’ Guild (La Chambre Syndicale des Teinturiers). The identification was based mainly on the electrospray ionization tandem mass spectrometry spectra obtained in the positive and negative ion modes. This technique was combined with high-performance liquid chromatography, which enabled separation of the analyzed compounds. Spectra registered for each of the examined synthetic dye allowed identification of their lost fragments. Moreover, isotopic profiles and exact measurements of m/z by using time of flight analyzer made possible to evaluate their elemental composition. In consequence, all obtained data, including UV–vis spectra, allowed to reconstruct molecular structures of examined colorants. Due to the lack of standards, the identification of the dyes was based only on the registration of fragment and quasi-molecular ions, what is rather uncommon in such analysis and means groping for the correct structure rather than proving signal identity by comparison with standards. Depending on substituents present in dye molecules, the lost fragments of the examined compounds involved SO2, NO•, NO2•, CH4, C2H4, C2H5•, C2H6, CH2 = N–CH3, (CH3)2NH, CH2 = NH, CH3–NH2, as well as CO and CO2. The performed study led to identification of various colorants: rhodamine 6 G, rhodamine B, malachite green, quinoline yellow, picric acid and acetoquinone yellow 5JZ.
Author Katarzyna Lech (FC / CAC)
Katarzyna Lech,,
- Chair Of Analytical Chemistry
, Ewa Wilicka (FC / CAC)
Ewa Wilicka,,
- Chair Of Analytical Chemistry
, Janina Witowska-Jarosz ()
Janina Witowska-Jarosz,,
-
, Maciej Jarosz (FC / CAC)
Maciej Jarosz,,
- Chair Of Analytical Chemistry
Journal seriesJournal of Mass Spectrometry, ISSN 1076-5174
Issue year2013
Vol48
No2
Pages141-147
Publication size in sheets0.5
Keywords in Englishearly synthetic dyes, tandem mass spectrometry, product ions spectra, fragmentation of even-electron ions, color palette of the Lyon Dyers’ Guild
ASJC Classification1607 Spectroscopy
DOIDOI:10.1002/jms.3090
URL http://onlinelibrary.wiley.com/doi/10.1002/jms.3090/abstract
Languageen angielski
File
wdpb_publikacje_pliki_plik_publikacja_2105_org.pdf 277.76 KB
Score (nominal)35
Score sourcejournalList
ScoreMinisterial score = 35.0, 28-12-2019, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 28-12-2019, ArticleFromJournal
Publication indicators Scopus Citations = 18; WoS Citations = 19; GS Citations = 7.0; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 0.991; WoS Impact Factor: 2013 = 2.709 (2) - 2013=3.017 (5)
Citation count*7 (2015-05-27)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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