ICP-AES法同时测定6种薯类作物中无机元素

Determination of Inorganic Elements in Root and Tuber Crops by ICP-AES

采用微波密闭消解,电感耦合等离子发射光谱法（ICP-AES）同时测定马铃薯、红薯、山药、芋头、紫薯和凉薯等6种薯类杂粮中15种元素的含量。方法简单、快速、准确性好,加标回收率在91.22%~108.56%之间。结果表明,6种薯类食品中均含有Ca、K、Mg和P等常量元素,其中芋头中Mg元素含量最高,还含有丰富的人体必需的Fe、Mn、Zn、Cu、Se和Mo等微量元素。该研究为科学合理的利用薯类作物提供理论依据。

The contents of 15 elements in the root and tuber crops were measured by microwave digestion and inductively coupled argon plasma atomic emission spectrometry （ICP-AES）. This method was easy operational, rapid, and accurate, the recoveries of all elements determined were 91.22%-108.56%. The results indicated that mot and tuber crops were a good source of constant elements （such as Ca, K, Mg, P and so on） and trace elements （such as Fe, Zn, Cu, Se Mn, Mo and so on）. And the highest Mg content was in taro of six tuber crops. The study provided a theoretical basis for scientific and rational use of root and tuber crops.