Comparing different light-degradation approaches for the degradation of crystal violet and eosin Y

Uijl, Mimi J. den; Lokker, Anika; Dooren, Bob van; Schoenmakers, Peter J.; Pirok, Bob W.J.; Bommel, Maarten R. van

doi:10.1016/j.dyepig.2021.109882

Cited by 12 publications

(12 citation statements)

References 35 publications

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“…However, understanding the differences in degradation between these matrices proved to be important. 7 , 8 , 39 …”

Section: Resultsmentioning

confidence: 99%

“…Photodegradation techniques generally require time and manual handling (e.g., degradation during a week). 7 Often a subsequent manual extraction is needed, introducing more sources of error. If more compounds and more parameters (e.g., time, catalysts, oxygen supply) are studied, the experimental procedure becomes very cumbersome and lengthy.…”

Section: Introductionmentioning

confidence: 99%

“…Another field in which light degradation poses serious problems is cultural heritage. Organic colorants applied as dyes degrade over time, resulting in art objects, such as textiles, furniture, drawings, and paintings, changing color and losing their historical value. − Knowledge about the degradation pathways and the influence of other parameters on light degradation can help us preserve valuable objects for future generations and understand the original appearance of objects of art.…”

Section: Introductionmentioning

confidence: 99%

“…To study photodegradation, several methods exist. ,− The simplest method is to illuminate a solution of a single dissolved compounds with a lamp. Unfortunately, degradation studies often report exclusively on the degradation of the starting compound, rather than studying the pathways and concentrations of all different degradation products. , Introducing more compounds and parameters inevitably leads to a tangle of different degradation pathways that occur simultaneously.…”

Section: Introductionmentioning

confidence: 99%

“…Photodegradation techniques generally require time and manual handling (e.g., degradation during a week) . Often a subsequent manual extraction is needed, introducing more sources of error.…”

Section: Introductionmentioning

confidence: 99%

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Combining Photodegradation in a Liquid-Core-Waveguide Cell with Multiple-Heart-Cut Two-Dimensional Liquid Chromatography

et al. 2022

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Photodegradation greatly affects everyday life. It poses challenges when food deteriorates or when objects of cultural heritage fade, but it can also create opportunities applied in advanced oxidation processes in water purification. Studying photodegradation, however, can be difficult because of the time needed for degradation, the inaccessibility of pure compounds, and the need to handle samples manually. A novel light-exposure cell, based on liquid-core-waveguide (LCW) technology, was embedded in a multiple-heart-cut two-dimensional liquid chromatography system by coupling the LCW cell to the multiple-heart-cut valve. The sample was flushed from the heart-cut loops into the cell by an isocratic pump. Samples were then irradiated using different time intervals and subsequently transferred by the same isocratic pump to a second-dimension sample loop. The mixture containing the transformation products was then subjected to the second-dimension separation. In the current setup, about 30–40% of the selected fraction was transferred. Multiple degradation products could be monitored. Degradation was found to be faster when a smaller sample amount was introduced (0.3 μg as compared to 1.5 μg). The system was tested with three applications, that is, fuchsin, a 19th-century synthetic organic colorant, annatto, a lipophilic food dye, and vitamin B complex.

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“…However, understanding the differences in degradation between these matrices proved to be important. 7 , 8 , 39 …”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%