关键词: 生鲜牛乳, 过氧化氢, 电极法, 检测

Abstract: An analytical method for determining hydrogen peroxide in raw whole milk was developed using a platinum-silver electrode. Electrode working conditions and sample pretreatment were optimized. The results obtained for the positive rate and false positive rate of hydrogen peroxide by the proposed electrode method, hydrogen peroxide test strip method and starch-potassium iodide method were compared to validate the reliability of the electrode method. The electrode method provided detection rates of 100% and 93.33% and false detection rates of 7.14% and 7.89% for hydrogen peroxide in the ranges of 0－10 mg/L and 10－80 mg/L, respectively; in contrast, detection rates of 0% and 83.33% and false detection rates of 100% and 20% were obtained using the hydrogen peroxide test strip method and the starch-potassium iodide method, respectively. In conclusion, the electrode method allows reliable, rapid, on-the-spot quantitative detection of hydrogen peroxide in raw milk.

Key words: raw whole milk, hydrogen peroxide, electrode method, detection