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.
journal_name
Food Chemjournal_title
Food chemistryauthors
Hu Z,Qi P,Wang N,Zhou QQ,Lin ZH,Chen YZ,Mao XW,Jiang JJ,Li Cdoi
10.1016/j.foodchem.2019.125745subject
Has Abstractpub_date
2020-03-30 00:00:00pages
125745eissn
0308-8146issn
1873-7072pii
S0308-8146(19)31876-Xjournal_volume
309pub_type
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