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Simultaneous Determination of Multiclass Illegal Dyes With Different Acidic-Basic Properties in Foodstuffs by LC-MS/MS via Polarity Switching Mode

Simultaneous Determination of Multiclass Illegal Dyes With Different Acidic-Basic Properties in Foodstuffs by LC-MS/MS via Polarity Switching Mode

Zhibo Hu, Ping Qi, Ning Wang, Qiong-Qing Zhou, Zi-Hao Lin, Yu-Zhong Chen, Xin-Wu Mao, Ji-Jun Jiang, Chunyuan Li

Food Chem. 2020 Mar 30;309:125745.

PMID: 31678670

Abstract:

Simultaneous determination of multiclass illegal dyes possessing different chemical properties is difficult. By using LC-MS/MS via negative/positive ion switching mode, an efficient and fast multi-residual method for simultaneous determination of multiclass 52 illegal dyes with different acidic-basic properties in foodstuffs was developed and validated during one single run, including 23 fat-soluble neutral azo dyes, 8 acidic sulfonated azo dyes, 12 triphenylmethane basic dyes, three basic indole dyes, three xanthene dyes, one quinoline dye, and two anthraquinones dyes. The illegal dyes were extracted with methanol-acetonitrile and further purified with d-SPE procedure to reduce interference. Sample dilution with 100-fold was used for the elimination of matrix effects of the quantitation of LC-MS/MS analysis. Validation data showed the good recoveries in the range of 71.2-111.2%, with relative standard deviations less than 20%, suggesting the developed method is suitable for the identification and quantitation of multiclass illegal dyes at trace levels in foods.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP34432923	Solvent Yellow 124		34432-92-3	Price

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