Degradation studies of CI Reactive Blue 19 on biodegraded cellulosic fabrics via liquid chromatography-photodiode array detection coupled to high resolution mass spectrometry / Nadia Sultana in COLORATION TECHNOLOGY, Vol. 135, N° 6 (12/2019)  

[article]  inCOLORATION TECHNOLOGY > Vol. 135, N° 6 (12/2019) . - p. 475-483 Titre : Degradation studies of CI Reactive Blue 19 on biodegraded cellulosic fabrics via liquid chromatography-photodiode array detection coupled to high resolution mass spectrometry Type de document : texte imprimé Auteurs : Nadia Sultana, Auteur ; Kelsey Williams, Auteur ; Mary Ankeny, Auteur ; Nelson R. Vinueza, Auteur Année de publication : 2019 Article en page(s) : p. 475-483 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse quantitative (chimie) Bleu (couleur) Colorants -- Analyse Colorants réactifs -- Biodégradation Colorants réactifs -- Détérioration Fibres cellulosiques Teinture -- Fibres textiles synthétiques Index. décimale : 667.2 Colorants et pigments Résumé : When textile substrates biodegrade in landfills, the fate of textile colorants is unknown, and potentially poses an ecotoxic threat. In this study, we developed a systematic analytical method to evaluate the biodegradation of reactive dyes, the most common class of dye applied to cotton fabrics. The cotton fabrics were dyed with CI Reactive Blue 19 and biodegraded in soil in a laboratory-controlled environment over intervals of 45 and 90 days. A dye isolation method using a low concentration of alkali (0.15% sodium hydroxide) was developed and applied (80°C for 1 hour) to isolate intact and degraded dye from the fabric samples. To quantify the intact dye isolated from the fabric samples, a quantification method was then developed using liquid chromatography-photodiode array detection. The quantification method provided excellent linearity (R2 = 0.9997 ± 0.0002), accuracy (% error = -2% ± 4), precision (% coefficient of variation = 2% ± 4) and sensitivity (lower limit of quantification = 0.4 ± 0.2 µg/mL) for concentrations ranging from 1 to 50 µg/mL. After validation, the method was applied and showed a reduction of dye in biodegraded samples (after 45 and 90 days) compared with undegraded control samples (0 days). To characterise the isolated dye degradation product, quadrupole time-of-flight tandem mass spectrometry was utilised. Analysis showed that the degradation product was formed by losing a -SO3- group from the intact hydrolysed form of the dye, creating a more hydrophobic degradation product compared with the intact hydrolysed form of dye. Note de contenu : - EXPERIMENTAL : Materials and reagents - Biodegradation of dyes fabric samples - Dye isolation method - Synthesis of hydrolysed dye standard - Quantitative monitoring of degradation - RESULTS AND DISCUSSION : Characterisation of synthesised hydrolysed dye standard - Analysis of undegraded control sample - Validation of quantification method - Quantification of dyes on biodegraded samples DOI : 10.1111/cote.12440 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12440 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33379 [article]

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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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Identification and quantification of CI Reactive Blue 19 dye degradation product in soil / Chengcheng Fen in COLORATION TECHNOLOGY, Vol. 137, N° 3 (06/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 3 (06/2021) . - p. 251-258 Titre : Identification and quantification of CI Reactive Blue 19 dye degradation product in soil Type de document : texte imprimé Auteurs : Chengcheng Fen, Auteur ; Xinyi Sui, Auteur ; Mary Ankeny, Auteur ; Nelson R. Vinueza, Auteur Année de publication : 2021 Article en page(s) : p. 251-258 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse quantitative (chimie) Bleu (couleur) Caractérisation Colorants réactifs -- Biodégradation Coton Le coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles). Essais (technologie) Extraction (chimie) Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : Landfills are becoming the most common way to dispose textiles. The presence of different types of dyes and finishes on textiles fabrics can become an important source of pollution during the degradation process, due to the fact that these chemicals can leach to the soil. The biodegradation of dyes from dyed fabrics is not fully understood, and what can leach into the soil can be more toxic. In this study, cotton fabrics were dyed with CI Reactive Blue 19 (RB19) and biodegraded in soil in a laboratory-controlled environment for a 90-day time interval by using the ASTM D 5988-18 method. A modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) extraction method, in combination with liquid chromatography-mass spectrometry (LC-MS) analysis, was applied to soil containing RB19 after the degradation process. An unknown degradation product, with a mass-to-charge ratio (m/z) of 393, found in the soil was characterised and confirmed, via high-resolution MS and tandem MS, to be CI Acid Blue 25 (AB25). To quantify the confirmed unknown product extracted from the degraded soil sample, a quantitation method was developed using high-performance liquid chromatography-diode array detector-mass spectrometry (HPLC-DAD-MS). The quantitation method provided excellent linearity (R2 = 0.9990 ± 0.0006), accuracy (mean percentage error = 5.17 ± 1.88), precision (mean percentage coefficient of variation = 4.73 ± 4.16), and sensitivity (lower limit of quantitation = 1.29 ± 0.47 µg/mL) for nine concentrations ranging from 0.5 to 40 µg/mL. Note de contenu : - EXPERIMENTAL : Materials and reagents - Product extraction via QuEChERS method - Detection and structural elucidation of RB19 degradation products - Quantification of standard AB25 spiked from blank soil - RESULTS AND DISCUSSION : Detection and structural elucidation of RB19 degradation products from soil - Quantification of standard AB25 dye solutions - Table 1 : The results of intra- and inter-day accuracy and precision of each concentration point of standard CI Acid Blue 25 (aB25) evaluated by liquid chromatography-diode array detector-mass spectrometry (LC-DAD-MS) method - Table 2 : Summary of validation parameters on standard CI Acid Blue 25 (AB25) quick, easy, cheap, effective, rugged, and safe (QuEChERS) quantification method DOI : https://doi.org/10.1111/cote.12527 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12527 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36091 [article]

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Purification and characterization of three commercial phenylazoaniline disperse dyes / Gisela A. Umbuzeiro in COLORATION TECHNOLOGY, Vol. 133, N° 6 (12/2017)  

[article]  inCOLORATION TECHNOLOGY > Vol. 133, N° 6 (12/2017) . - p. 513-518 Titre : Purification and characterization of three commercial phenylazoaniline disperse dyes Type de document : texte imprimé Auteurs : Gisela A. Umbuzeiro, Auteur ; Malgorzata Szymczyk, Auteur ; Min Li, Auteur ; Yufei Chen, Auteur ; Josiane A. S. Vendemiatti, Auteur ; Anjaina F. de Albuquerque, Auteur ; Amanda dos Santos, Auteur ; Bianca de S. Maselli, Auteur ; Fábio Kummrow, Auteur ; Nelson R. Vinueza, Auteur ; Harold S. Freeman, Auteur Année de publication : 2017 Article en page(s) : p. 513-518 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Chromatographie Colorants -- Analyse Colorants -- Toxicologie Colorants azoïques Colorants dispersés Catégorie de colorants très peu solubles dans l'eau, utilisés à l'origine comme colorants pour l'acétate, et qui généralement sont appliqués sous forme de suspensions aqueuses de faible concentration.Les colorants dispersés sont largement utilisés dans la teinture de la plupart des fibres manufacturées, surtout le polyester. Ecotoxicologie Produits chimiques -- Purification Index. décimale : 667.3 Teinture et impression des tissus Résumé : Although tons of disperse dyes are used worldwile, little information on their ecotoxicity is available. While in silico models can be used to predict their ecotoxicity, experimental results from Daphnia can show significantly higher toxicity than predicted. Thus the objective of this work was to extend the knowledge base in this area by evaluating the ecotoxicity of three widely used disperse dyes and comparing the results to predicted values. Bearing in mind that generating ecotoxicity data on azo disperse dyes is complicated because they are not readily found as homogeneous compounds, we employed chromatographic methods to purify three commercially dyes C.I. Disperse Violet 93, Blue 291, and Blue 373 already found in the aquatic environment. No acute toxicity was observed for Daphnia similis. These results seems to be in general agreement when compared with ECOSAR predicted values. We hypothesize that differences in Kow values could explain the variations in results. Note de contenu : - EXPERIMENTAL : Materials and measurements - Ecotoxicity testing - RESULTS AND DISCUSSION : Dye purification and characterisation - Ecotoxicity testing DOI : 10.1111/cote.12307 En ligne : https://drive.google.com/file/d/1DM9f8_4OBpVPTIJh6QGxPWG852D-7dyR/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29504 [article]

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