A method of screening and determination Sudan dyes in margarine by LC/Q-TOF.The compounds were extracted by n-hexane and cleaned by GPC.The limit of detection of 8 kinds of Sudan dyes was between 0.75~5 ng/mL analysed by LC/Q-TOF.8 kinds of Sudan dyes were matched and identified by the function of precision mass searching and the mass spectrum library searching.The results displayed that the matching scores of all of dyes were high than 94% except Sudan red G.Then the compounds were confirmed by the secondary mass spectrum.
标题:液相色谱四级杆-飞行时间质谱对人造奶油中苏丹类染料的检测
英文标题:Determination of Sudan dyes in margarine by LC/Q-TOF