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提出了在ｐＨ＝８．８的Ｈ３ＢＯ３－Ｎａ２Ｂ４Ｏ７介质中用溶出计时电位法测定食品中痕量锰的新方法。锰的检出限为０．５ｎｇ／ｍｌ，相对标准偏差≤４．８％，线性范围为０．５～２５ｎｇ／ｍｌ。采用本法对４份不同种类的食品样品进行了测定，结果与原子吸收法相符。
A new method was proposed for the determination of trace manganese in food using dissolution timed potential method in H3BO3-Na2B4O7 medium of pH = 8.8. The detection limit of manganese was 0.5ng / ml, the relative standard deviation was less than 4.8% and the linear range was 0.5 ~ 25ng / ml. Four different kinds of food samples were determined by this method and the results were in accordance with the atomic absorption method.