【摘要】 目的 :测定食物中锌、铁、锰的含量。方法 :采用1.5次微分伏安法进行测定。结果 :在选定的试验条件下 ,锌、铁和锰的浓度在0.02μg/ml～4.0μg/ml范围内与峰高呈线性关系。样品测定的相对标准偏差为4.7 %～10.0% ,回收率为92.5%～106.0 %。对食物样品分析的结果与电感耦合等离子体发射光谱法(ICP)比较 ,没有显著性差异。结论 :该法简单、准确、灵敏度高 ,适用于食物中锌、铁、锰含量的测定更多还原

【Abstract】 Objective:To determine the content of Zinc?Iron and Manganese in foods.Methˉods:1.5order differential voltammetry.Results:The calibration curves for Zn?Fe and Mn under the given conditions were linear relation in the concentration range of0.02μg/ml～4.0μg/ml.The relative standard deviations for foods were4.7%～10.0%,The recovery was92.5%～106.0%.There was no significant difference between the results by this method and ICP.Conclusion:This method is simple,rapid and exact for determining the content of Zn,Fe and Me in foods.更多还原