单道扫描式ICP-AES法测定婴儿乳粉、代乳粉中K、Na、Ca、Mg、P、Fe、Zn、Cu、Mn和Sr

Sequential Scanning Determination of K,Na,Ca,Mg,P,Fe,Zn,Cu,Mn and Sr in Milk Powder and Milk’s Substitute for Infant by ICP-AES

本文采用HNO_3-HClO_4湿法消解样品,用乳化剂OP解决雾化器堵塞问题,利用单道扫描式ICP-AES仪测定婴儿乳粉、代乳粉中十种元素(K、Na、Ca、Mg、F、Fe、Zn、Cu、Mn和Sr)。方法简便快速,回收率在90-105%,相对标准偏差均小于10%,适用于婴儿乳粉、代乳粉中上述元素的测定。

This method can be used to analyze 10 elements (K, Na, Ca, Mg, P, Fe, Zn, Cu, Mn, and Sr) in milk powder and milk's substitute for infant by ICP-AES. The sam ples were digested by acid mixtures of HNO_3-HClO_4. The emulsifying agent OP was used to prevent blocking up the atomizer. This method is simple and raid. The range of the recoveries was 90-105%. The relative standard deviation was less than 10%. Some samples have been determined with satisfactory results using this method.