Quantum dots and cationic carrier-reinforced electromembrane extraction of typical illegal dyes in fish samples followed by capillary electrophoresis with contactless conductivity detection.

Mengnan Guo, Shiyu Liu, Dingxuan Li, Jiaying Chen, Manman Wang, Jiannong Ye, Qingcui Chu

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Article in Journal of the science of food and agriculture, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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7 authors.

Mengnan GuoSchool of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China.

Shiyu LiuSchool of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China.

Dingxuan LiSchool of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China.

Jiaying ChenSchool of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China.

Manman WangSchool of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China.

Jiannong YeSchool of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China.

Qingcui ChuSchool of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China.ORCID https://orcid.org/0000-0001-6849-9766

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6 · The paper itself

Abstract

backgroundMalachite green and crystal violet have been attracting wide attention due to their potential hazards to the environment and human health. Due to the complexity of the real sample matrix and the low contents of the target analytes, green sample pretreatment methods have become a research hotspot.

resultsIn this work, electromembrane extraction reinforced by quantum dots and a cationic carrier (tris(2-ethylhexyl) (phosphate) was applied to the purification and enrichment of the interested illegal dye additives in aquatic products. The obtained extract could be directly analyzed by the integrated system of capillary electrophoresis with capacitively coupled contactless conductivity detection. The main experimental parameters influencing separation and extraction were investigated in detail. Under the optimum conditions, the limits of detection attained 5.6-15 ng mL

conclusionThis proposed method is easy to operate and requires no derivatization, providing an alternative for the fast analysis of illegal dye additives in the real-world fish samples. © 2026 Society of Chemical Industry.

Indexed as

Coloring AgentsFood ContaminationSolid Phase ExtractionAnimalsCationsElectric ConductivityElectrophoresis, CapillaryFishesQuantum DotsCationsColoring Agentscapillary electrophoresiscontactless conductivity detectionelectromembrane extractionfishillegal dye additivesquantum dots

Identifiers

PMID42219773

DOI10.1002/jsfa.70757

PMCPMC13442745

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