超级微波消解-电感耦合等离子体发射光谱法定量测定骆驼乳粉中9种矿物质元素

Quantitative determination of 9 kinds of mineral elements in camel milk powder by super microwave digestion-inductively coupled plasma optical emission spectrometry

中文关键词:  超级微波消解  骆驼乳粉  矿物质元素  电感耦合等离子体发射光谱法

英文关键词:super microwave digestion  camel milk powder  mineral elements  inductively coupled plasma optical emission spectrometry

中文摘要:

      目的 建立超级微波消解-电感耦合等离子体发射光谱法测定骆驼乳粉中9种矿物质元素的方法。方法 使用超级微波消解法以优化条件硝酸:水=2:1作为酸体系, 消解温度为220 ℃, 对骆驼乳粉进行前处理, 同时对比普通微波消解的消解效果, 再采用电感耦合等离子体发射光谱仪测定样品的9种矿物质元素含量。以有证标准物质考察方法的准确性。结果 数据表明9种元素的线性关系良好, 曲线线性相关系数在0.9998以上, 标准物质的回收率为98.6%~102.0%, 且质控样品的9种元素含量测量结果均在标准值范围内。结论 超级微波消解法和普通微波消解法相比, 超级微波消解法消解效果更好, 同时也更环保、高效、可行。

英文摘要:

      Objective To establish a method for the determination of 9 kinds of mineral elements in camel milk powder by super microwave digestion inductively coupled plasma emission spectroscopy. Methods The camel milk powder was pretreated by super microwave digestion method with the optimized conditions of nitric acid:water=2:1 as the acid system, and the digestion temperature was 220 ℃. At the same time, the digestion effect of ordinary microwave digestion was compared, and then the content of 9 kinds of minerals in the samples was determined by inductively coupled plasma atomic emission spectrometry. The accuracy of the method was examined with certified reference material. Results The data showed that the linear relationship between the 9 kinds of elements was good, with a linear correlation coefficient of 0.9998 or above. The recoveries rate of the standard substance were 98.6%~102.0%, and the content measurement results of the 9 kinds of elements in the quality control samples were all within the standard value range. Conclusion Compared with ordinary microwave digestion method, super microwave digestion method has better digestion effect, and is also more environmentally friendly, efficient, and feasible.