Migration behavior of organic dyes based on physicochemical properties of solvents as background electrolytes in non-aqueous capillary electrophoresis

Gu, Min-Jeong; Cho, Keunchang; Kang, Seong Ho

doi:10.1016/j.chroma.2018.05.029

Cited by 6 publications

(3 citation statements)

References 52 publications

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“…At present, NH 4 Ac [25] is the most used electrolyte in NACE electrophoresis separation system. Considering the solubility of drugs, DMSO [26] is selected as the organic medium. In this experiment, using NH 4 Ac‐DMSO as the base buffer liquid system, the chip electrophoresis separation effect of five anthraquinone components in rhubarb was further investigated in five background buffer liquid systems: NH 4 Ac‐DMSO, NH 4 Ac‐DMSO‐HAc, NH 4 Ac‐DMSO‐H 2 O, NH 4 Ac‐DMSO‐HAc‐H 2 O, and NH 4 Ac‐DMSO‐ FA‐H 2 O.…”

Section: Resultsmentioning

confidence: 99%

“…At present, NH 4 Ac [25] is the most used electrolyte in NACE electrophoresis separation system. Considering the solubility of drugs, DMSO [26] is selected as the organic medium. In this experiment, using NH 4 Ac-DMSO as the base buffer liquid system, the chip electrophoresis separation effect of five anthraquinone components in rhubarb was further investigated in five background buffer liquid systems: NH The results showed that the system with NH 4 Ac-DMSO-FA-H 2 O as buffer solution had the best separation (R 1,2 = 4.2, R 2,3 = 4.5), the highest sensitivity, and the overall migration time was shorter (t < 120 s) (see Figure S1).…”

Section: Selection Of Background Buffer Liquid Systemsmentioning

confidence: 99%

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Determination of rhein and physcion in rhubarb by microchip capillary electrophoresis in mixed hydro‐organic solvent combined with laser‐induced fluorescence detection

Chen

Liang

et al. 2023

J of Separation Science

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Microchip capillary electrophoresis in mixed hydro-organic solvent combined with laser-induced fluorescence detection was developed for the separation and detection of physcion and rhein in rhubarb. In contrast to the conventional capillary electrophoresis method, ammonium acetate-dimethyl sulfoxide was used as the basic buffer system in this method. The effects of background buffer, buffer apparent pH*, buffer concentration, water ratio, sample preparation method, and separation voltage on separation and detection were investigated. Optimized separation and detection conditions were obtained: the buffer consisted of 20 mmol/L of ammonium acetate in hydro-organic solvent composed dimethyl sulfoxide, formamide, and water mixed at 60/20/20 (v/v/v) ratio. The separation voltage was 1.9 kV. Under these conditions, the physcion, rhein, and other components of rhubarb can be completely separated within 150 s. Under the methodological verification, good linearity (R ≥ 0.9995) for physcion and rhein, and low limits of detection (0.085 μg⋅mL −1 and 0.077 μg⋅mL −1 , respectively), satisfactory peak area precisions, migration time precisions (1.74%-3.09%), and accuracy (recovery rate 97.8% and 101.4%) were achieved. It is shown that the proposed method is simple, efficient, fast, sensitive, simple instrument, consumes few samples, has low operating cost, and is linear.

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Section: Resultsmentioning

confidence: 99%

“…At present, NH 4 Ac [25] is the most used electrolyte in NACE electrophoresis separation system. Considering the solubility of drugs, DMSO [26] is selected as the organic medium. In this experiment, using NH 4 Ac-DMSO as the base buffer liquid system, the chip electrophoresis separation effect of five anthraquinone components in rhubarb was further investigated in five background buffer liquid systems: NH The results showed that the system with NH 4 Ac-DMSO-FA-H 2 O as buffer solution had the best separation (R 1,2 = 4.2, R 2,3 = 4.5), the highest sensitivity, and the overall migration time was shorter (t < 120 s) (see Figure S1).…”

Section: Selection Of Background Buffer Liquid Systemsmentioning

confidence: 99%

Determination of rhein and physcion in rhubarb by microchip capillary electrophoresis in mixed hydro‐organic solvent combined with laser‐induced fluorescence detection

Chen

Liang

et al. 2023

J of Separation Science

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“…Paper chromatography and thin layer chromatography (TLC) [5] have the advantage of simple and direct operation for routine analysis. Analytical methods, including high-performance liquid chromatography (HPLC), [6,7] capillary electrophoresis (CE), [8,9] laser desorption ionization (LDI), [10,11] and matrixassisted laser desorption/ionization (MALDI), [12,13] secondary ion mass spectrometry (SIMS), [14,15] and electrospray ionization mass spectrometry (ESI-MS), [16] have also been used to identify the dyes and pigments in ink samples.…”

Section: Introductionmentioning

confidence: 99%

Characterizing different types of black fountain pen ink using the chemical approach

Tung

Wang

et al. 2023

J Chinese Chemical Soc

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Fountain pen ink contains dyes, pigments, or nanoparticles as colorants; water and ethylene glycol or an organic solvent as the vehicle. The dyes in fountain pen ink are usually negatively charged acid dyes. In this study, various types of black fountain pen ink (5 dye‐based and 5 nanoparticle‐based) were investigated by ultraviolet–visible (UV–Vis) absorption spectroscopy, Ion Pair High Performance Liquid Chromatography Diode‐Array Detector (IP‐HPLC‐DAD), Matrix Assisted Laser Desorption/Ionization Time‐of‐Flight Mass Spectrometry (MALDI‐TOF‐MS), and Liquid Chromatography Quadrupole Time‐of‐Flight Mass Spectrometry (LC‐Q/TOF‐MS) analysis. UV–Vis spectroscopy of fountain pen ink samples showed different profiles despite their similar color. MALDI‐TOF‐MS analyses successfully differentiated 10 of the inks. Nanoparticle‐based ink, which is usually darker than dye‐based ink, showed the same UV absorption at 240 nm. The use of LC‐Q/TOF‐MS, however, allowed the 5 dye‐based fountain pen ink samples to be differentiated from one another. On the basis of the combined results of all analytical methods mentioned above, the discriminating power values were 0.71–1.00. Among them, MALDI‐TOF‐MS could successfully distinguish fountain pen ink samples with similar black colors and provide an easy analytical approach for the differentiation and identification of various types of fountain pens.

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Determination of aldehydes in water samples by coupling magnetism-reinforced molecular imprinting monolith microextraction and non-aqueous capillary electrophoresis

Fang

Liu

et al. 2020

Journal of Chromatography A

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Migration behavior of organic dyes based on physicochemical properties of solvents as background electrolytes in non-aqueous capillary electrophoresis

Cited by 6 publications

References 52 publications

Determination of rhein and physcion in rhubarb by microchip capillary electrophoresis in mixed hydro‐organic solvent combined with laser‐induced fluorescence detection

Determination of rhein and physcion in rhubarb by microchip capillary electrophoresis in mixed hydro‐organic solvent combined with laser‐induced fluorescence detection

Characterizing different types of black fountain pen ink using the chemical approach

Determination of aldehydes in water samples by coupling magnetism-reinforced molecular imprinting monolith microextraction and non-aqueous capillary electrophoresis

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