电热水壶中9种抗氧化剂迁移水平的测定

Determination of nine antioxidants from electric kettle into water

目的：建立反相高效液相色谱法测定电热水壶中9种抗氧化剂迁移水平的方法。方法：选用C18柱,流动相为A甲醇（含乙酸1%）和B水（含乙酸1%）,梯度洗脱,流速为0.9 ml/min,DAD检测器。结果：本法相关性好（r〉0.9973）,精密度高（RSD%〈7.14）,检出限低（6.0～8.9μg/L）。9种抗氧化剂的加标回收率为80.3%～98.1%。结论：该方法简单,快速,准确,能够满足日常检验的需要。

Objective：Ananalytical method for the determination of specific migration levels of nine antioxidants from electric kettle into water had been developed.Methods：The methods was based on reversed-phase high-performance liquid chromatography（HPLC） under the condition of gradient elution with A： CH3OH（include 1% CH3COOH） and B： H2O（include 1% CH3COOH） by use C18 colunm,and ultraviolet diode-array detector.Results：This method had good relativity（r〉0.9973） and good analytic precision（RSD%〈7.14）,the detection limit was 6.0~8.9 μg/L,and the recoveries of the nine compositions were from 80.3% to 98.1%.Conclusion：Its advantages are simple operation,quickness,high sensitivity and precise results.This method can be applied widely and suitable for trace analysis of samples.