Dimerised heterobifunctional reactive dyes. Part 1 : characterisation using quadrupole time-of-light mass spectrometry / Nadia Sultana in COLORATION TECHNOLOGY, Vol. 134, N° 6 (12/2018)  

[article]  inCOLORATION TECHNOLOGY > Vol. 134, N° 6 (12/2018) . - p.470-477 Titre : Dimerised heterobifunctional reactive dyes. Part 1 : characterisation using quadrupole time-of-light mass spectrometry Type de document : texte imprimé Auteurs : Nadia Sultana, Auteur ; Yixin Liu, Auteur ; Harold S. Freeman, Auteur ; Nelson R. Vinueza, Auteur Année de publication : 2018 Article en page(s) : p.470-477 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bleu (couleur) Colorants -- Analyse Colorants réactifs Dimères Hexaméthylène diamine Rouge (couleur) Spectrométrie de masse Index. décimale : 667.2 Colorants et pigments Résumé : As part of an approach to enhancing the efficiency of reactive dye adsorption on cellulosic fibres at low electrolyte levels, commercially available dyes were dimerised using hexamethylenediamine (HMDA) as a linking group. A key component of this work involved using high-resolution mass spectrometry (HRMS) to characterise a group of polysulphonated heterobifunctional monochlorotriazine/vinyl sulphone reactive dyes (CI Reactive Yellow 176, CI Reactive Red 239, CI Reactive Blue 221, CI Reactive Red 194 and CI Reactive Blue 222) and their dimeric analogs. In this respect, dimeric dye ions of differently charged states were observed using HRMS-negative electrospray ionisation in combination with quadrupole time-of-flight mass spectrometry. For example, HRMS showed that the HMDA-linked reaction products were mixtures of the target (unhydrolysed) dimers, hydrolysed dimers, monoreacted products and hydrolysed unreacted dyes, with CI Reactive Yellow 176 and CI Reactive Red 194 producing the desired unhydrolysed dimers. Note de contenu : - EXPERIMENTAL : Materials and reagents - Reactive dye dimer formation- Mass spectrometry - RESULTS AND DISCUSSION : Characterisation of parent dyes - Characterisation of dimeric structures DOI : 10.1111/cote.12368 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12368 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31381 [article]

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Separation and identification of commercial reactive dyes with hydrophilic interaction liquid chromatography and quadrupole time-of-flight mass spectrometry / Yixin Liu in COLORATION TECHNOLOGY, Vol. 137, N° 4 (12/07/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 4 (12/07/2021) . - p. 407-417 Titre : Separation and identification of commercial reactive dyes with hydrophilic interaction liquid chromatography and quadrupole time-of-flight mass spectrometry Type de document : texte imprimé Auteurs : Yixin Liu, Auteur ; Xinyi Sui, Auteur ; Julio E. Teràn, Auteur ; Lisa Parillo-Chapman, Auteur ; Mary Ankeny, Auteur Année de publication : 2021 Article en page(s) : p. 407-417 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chromatographie en phase liquide Colorants -- Identification Colorants réactifs Séparation (technologie) Solutions aqueuses (chimie) Spectrométrie de masse Index. décimale : 667.2 Colorants et pigments Résumé : The separation and identification of colourants from aqueous matrices could potentially benefit the coloration industry. In this work, we report a new method that combines hydrophilic interaction liquid chromatography (HILIC) and high-resolution mass spectrometry (HRMS) for reactive dye separation and identification without employing ion-pairing agents. The conditions outlined allowed the successful separation of a mixture of four commercial reactive dyes in an aqueous solution, which consisted of CI Reactive Black 5, CI Reactive Orange 35, CI Reactive Blue 49 and CI Reactive Red 31. To further demonstrate the feasibility of this new method, we conducted deeper research into the analysis of CI Reactive Red 31 and its hydrolysis products. Based on the high efficiency of HILIC for polar compounds, and its combination with HRMS, we were able to identify several isomers of CI Reactive Red 31 and its derivatives, which were further characterised by tandem mass spectrometry. This method could potentially benefit chemical evaluations in dye applications, including synthetic processes, because it provides reliable results and simplified operation conditions compared with common traditional high-performance liquid chromatography methods. Note de contenu : - EXPERIMENTAL : Materials - Sample preparation - Instrumentation - RESULTS AND DISCUSSION : Separation and identification of different reactive dye mixtures by HILIC-QTOF-MS - HILIC-QTOF-MS characterisation of RR31 before and after hydrolysis treatment - Table 1 : Hydrophilic interaction liquid chromatography method used for the separation of CI Reactive Red 31 and its hydrolysis products - Table 2 : A summary of retention time (tR, min) and percentage area (%A) of the peaks DOI : https://doi.org/10.1111/cote.12539 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12539 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36105 [article]

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