食品中红2G、二甲基黄、二乙基黄工业染料的同时测定

The simultaneous determination of red 2G, methyl yellow and diethyl yellow in food

建立了肉制品、豆制品、调味品中红2G、二甲基黄和二乙基黄的高效液相色谱及液相色谱—质谱联用测定方法。结果表明,红2G的检出限为0.5 mg/kg,二甲基黄、二乙基黄的检出限均为0.1 mg/kg,回收率为80.7%~91.8%,相对标准偏差为3.8%~7.8%。

A method for the simultaneous determination of red 2G,dimethyl yellow and diethyl yellow in meat products,soybean products and flavoring was established by HPLC and LC-MS.The samples were extracted by acetonitrile aqueous solution,with solid phase column,and determined by HPLC with diode array detector or UV detector,and then quantified by external standard method.The detection limit of red 2G was 0.5 mg/kg,and those of dimethyl yellow and diethyl yellow were 0.1 mg/kg,with the recovery rate ranging from 80.7%to 91.8%and the relative standard deviation of 3.8%~7.8%.