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探讨混酸体系、混酸比和固液比对沉香叶消解的影响。采用微波消解—原子吸收分光光度法(AAS)测定沉香叶中钾、钙、镁、铁、锰、锌元素的含量,并根据正交试验设计研究微波消解系统中混合酸体系、混酸比和固液比对于消解结果的影响。实验结果显示混酸比为8:2;固液比为1:24;混合酸体系为HNO_3—HC1时,沉香叶样品消解效果最好。方法的回收率在90.00%~104.00%之间,相对标准偏差为1.03%~2.33%%,说明方法有较好的准确度和精密度。在实验条件下对云南沉香和白木香叶片中的K、Mg、Zn、Ca、Fe、Mn的含量进行测定,结果为两种沉香叶中均含有丰富的K、Mg、Zn、Ca、Fe、Mn,其中白木香叶中的K、Mg、Zn含量大于云南沉香叶中的K、Mg、Zn含量;而Ca、Fe的含量小于云南沉香叶中的含量;Mn在这两种沉香叶中的含量相差不大。从矿物元素角度分析,沉香叶具有较高的开发价值。
The effect of mixed acid system, mixed acid ratio and solid-liquid ratio on the digestion of alfalfa leaves was discussed. The contents of potassium, calcium, magnesium, iron, manganese and zinc in the decoctions were determined by microwave digestion and atomic absorption spectrophotometry (AAS). According to the orthogonal experimental design, the mixed acid system, Effect of liquid ratio on digestion results. The results showed that the ratio of mixed acid to acid was 8: 2 and the ratio of solid to liquid was 1:24. When the mixed acid system was HNO3-HC1, the decoction effect was the best. The recoveries of the method ranged from 90.00% to 104.00% with relative standard deviations of 1.03% -2.33%, indicating that the method has good accuracy and precision. The contents of K, Mg, Zn, Ca, Fe and Mn in the leaves of Radix Aconitum and Bai Mu Xun were determined under the experimental conditions. As a result, the contents of K, Mg, Zn, Ca, Fe, Mn, in which K, Mg, Zn content of white wood was greater than that of K, Mg, Zn in Yunnan wood; and the content of Ca, Fe was less than that in Yunnan wood; The content is not much difference. From the perspective of mineral elements, Shen Xiang leaves have a higher development value.