阳极溶出伏安法测定食品中铅、镉的含量  

Determination of Pb、Cd in food by anodic stripping voltammetry

作　　者：吕志进[1] 李建虎[2] 黄欣[1] 孙淑芬[3] 

机构地区：[1]天津医科大学药学院,天津300203 [2]天津医科大学附属卫校 [3]天津医科大学第三医院药剂科

出　　处：《天津医科大学学报》2002年第2期187-188,190,共3页Journal of Tianjin Medical University

摘　　要：目的 :测定铅、镉在食品中的含量。方法 :采用银汞膜电极阳极溶出伏安法与经典的883笔录式极谱仪联用 ,并进行了内部电解法以提纯底液 ,使之空白为零。结果 :实验的检测下限 :铅为0.20g/L ,镉为0.12 g/L。与标准水样对照结果相符。结论:该电极表面积较大 ,制备简单、经济耐用、易再生、灵敏度高。Objective: To determine the content of Pb 2+, Cd 2+ in food.Methods: The method of using the Ag-Hg film electrode is combined with classical polarograph. Besides, internal electrolysis is conducted to refine bottom liquid with zero blank.Results: Detect limit of Pb 2+: 0.20 g/L. Detect limit of Cd 2+: 0.12 g/L.Compared with sample of standard water, the result is consistent.Conclusion: The surface area of the electrode is larger, so to possess preparation easy, economical durable,good reproducibility,high sensitivity.

关 键 词：银汞膜电极 阳极溶出伏安法 检测下限 食品 铅 镉 含量 

分 类 号：R155.5[医药卫生—营养与食品卫生学]