Automated extraction of direct, reactive, and vat dyes from cellulosic fibers for forensic analysis by capillary electrophoresis

Dockery, Christopher R.; Stefan, Amy R.; Nieuwland, Alexander A.; Roberson, Samantha N.; Baguley, Brittany M.; Hendrix, James E.; Morgan, Stephen L.

doi:10.1007/s00216-009-2876-8

Cited by 21 publications

(34 citation statements)

References 13 publications

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“…As previously stated, reactive dyes are resistant to removal from fibres due to the covalent bonds between the dyes and the hydroxyl groups of cotton. Because the hydroxyl groups in the cellulosic backbone of cotton are weakly acidic in nature, an alkaline solution is used to cleave the glucose‐dye link and isolate the hydrolysed form of dye . However, a high concentration of alkali (1.5%‐2% sodium hydroxide) partially dissolves the fibre and discolours the dye .…”

Section: Methodsmentioning

confidence: 99%

Degradation studies of CI Reactive Blue 19 on biodegraded cellulosic fabrics via liquid chromatography‐photodiode array detection coupled to high resolution mass spectrometry

Sultana

Williams

Ankeny

et al. 2019

Coloration Technology

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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.

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Section: Methodsmentioning

confidence: 99%

Degradation studies of CI Reactive Blue 19 on biodegraded cellulosic fabrics via liquid chromatography‐photodiode array detection coupled to high resolution mass spectrometry

Sultana

Williams

Ankeny

et al. 2019

Coloration Technology

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“…8). [59,87,88] Ultra-performance liquid chromatography (UPLC) is another technique for the sensitive comparison of fiber dyes. [89] This method is often connected with mass spectrometer in providing chemical specificity.…”

Section: Chromatographic Analysis Of Fibersmentioning

confidence: 99%

Forensic comparison of synthetic fibers

Farah

Kunduru

Tsach³

et al. 2015

Polymers for Advanced Techs

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Polymeric fibers are one kind of trace evidence found in the crime scenes, and they play a crucial role in criminal investigation. Identification and comparison of polymeric fibers are a direct result of professional analysis. When performed properly, the analytical method used in differentiating fibers of different origins can be of high evidential value. Regular forensic examinations of synthetic fibers to determine type and subtype are based on microscopy, spectroscopy, chromatographic, and mass spectrometry. This review covers different analytical methods used in the forensic analysis and comparison of synthetic fibers.

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“…An aqueous solution of a strong base is typically used to remove the dyes from the cotton fiber. Complete extraction of reactive dyes was reported from bulk cotton treated with 1.5% aqueous NaOH at 100°C for 20 min (Dockery et al 2009). The alcohol groups on the glucose units in the cellulose backbone of cotton act as a weak acid and are ionized under alkaline conditions.…”

Section: Weight Lossmentioning

confidence: 99%

Effects of reductive stripping of reactive dyes on the quality of cotton fabric

Uddin

Islam

2015

Fashion and Textiles

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Some common problems of textile dyeing industries include uneven or faulty dyeing and formation of color patches on the fabric surface during dyeing and downstream processing of textiles materials. Such problems in the finished quality of fabric are generally tackled through a chemical stripping process which is a common practice in dyeing industries for the deep shade batches. However, reactive dyes cannot be stripped satisfactorily from cellulosic materials due to the formation of co-valent bonds between dye and fiber. This research was undertaken using 2.5% and 5% bi-hetero reactive dyes on pretreated cotton fabric and dye stripping was carried out in alkali reductive stripping process. The aim of the work was to investigate the effects of dye stripping on the quality of cotton fabric. Strength loss, weight loss, pilling resistance and absorbency of stripped fabric were calculated. Though with the increase of concentration of stripping chemicals and temperature, stripping percentages were improved; processing damage to the fabric such as losses in strength, weight and pilling resistance ratings was found. In contrast, increased fabric absorbency was found due to stripping. This is explained that during stripping, alkaline solution as an intracrystalline swelling agent is effective in loosening the crystalline region of cotton in addition to the amorphous region. Stripping agent can also attack such crystalline region. As a result, cotton fiber can release maximum number of hydroxyl groups which previously formed covalent bonds. This is the reason behind the stripped fabric having more water absorbency.

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Automated extraction of direct, reactive, and vat dyes from cellulosic fibers for forensic analysis by capillary electrophoresis

Cited by 21 publications

References 13 publications

Degradation studies of CI Reactive Blue 19 on biodegraded cellulosic fabrics via liquid chromatography‐photodiode array detection coupled to high resolution mass spectrometry

Degradation studies of CI Reactive Blue 19 on biodegraded cellulosic fabrics via liquid chromatography‐photodiode array detection coupled to high resolution mass spectrometry

Forensic comparison of synthetic fibers

Effects of reductive stripping of reactive dyes on the quality of cotton fabric

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