Retho C, Diep L
Répression des Fraudes, Laboratoire de Paris-Massy, Massy, France.
Z Lebensm Unters Forsch. 1989 Mar;188(3):223-6. doi: 10.1007/BF02112879.
A method for the determination of ethylendiaminetetraacetic acid (EDTA) in foodstuffs by high performance liquid chromatography (HPLC) and gas chromatography (GC) is described. This method is applied to foodstuffs rich in sugars and polysaccharides for which aqueous extraction cannot be directly used in chromatographic analysis. EDTA, in its iron chelate form, is extracted with water from the defatted foodstuff. The extract is then purified by ion-exchange chromatography. At this stage of purification, the quantitative level of EDTA can be estimated by HPLC and the result can be confirmed by GC. The detection level of our samples of tinned beans was under 5 mg/kg.
描述了一种通过高效液相色谱法（HPLC）和气相色谱法（GC）测定食品中乙二胺四乙酸（EDTA）的方法。该方法适用于富含糖和多糖的食品，对于这类食品，水相萃取不能直接用于色谱分析。以铁螯合物形式存在的EDTA用水从脱脂食品中萃取。然后通过离子交换色谱法对萃取液进行纯化。在纯化的这一阶段，可通过HPLC估算EDTA的定量水平，结果可用GC进行确认。我们罐装豆样品的检测水平低于5毫克/千克。
