Abstract: A high performance liquid chromatography (HPLC) method was established for the simultaneous determination of the contents of three fumonisins in infant formula. Under optimized experimental conditions, the fumonisins were quantified by an external standard method. The analytical figures of merit such as linear relationship, recovery, precision, limit of detection and limit of quantitation of the method were examined. The results showed that the linearity of the method was good in a certain concentration range (r > 0.999). The detection limits of fumonisin B1, B2 and B3 were 10, 5, and 5 μg/kg, respectively. The limits of quantitation were 30, 15 and 15 μg/kg, respectively. The average recoveries of the fumonisins were 91.6% –95.7%, 89.5%–94.4% and 88.6%–92.3% at three different spiked levels, respectively, and the relative standard deviations (RSDs) for precision were less than 10%.

Key words: infant formula; fumonisins content; precolumn derivatization; high performance liquid chromatography

摘要： 建立高效液相色谱法测定婴幼儿配方乳粉中3 种伏马毒素含量的方法。通过优化前处理及实验条件，外标法定量，考察线性关系、加标回收率、精密度、检出限及定量限等指标。结果表明：该方法在一定质量浓度范围内线性良好（r＞0.999），3 种伏马毒素的检出限分别为10、5、5 μg/kg，定量限分别为30、15、15 μg/kg；在3 个不同加标水平下，3 种伏马毒素的平均加标回收率分别为91.6%～95.7%、89.5%～94.4%、88.6%～92.3%，相对标准偏差均小于10%。

关键词: 婴幼儿配方乳粉；伏马毒素含量；柱前衍生；高效液相色谱法