离子色谱法测定苦荞系列产品中4种无机元素  

Simultaneous Determination of Four Inorganic Elements in Tartary Buckwheat Series Products by Ion Chromatography

作　　者：乌兰其其格[1] 宝力道[1] 赵玉英[2] 

机构地区：[1]赤峰学院化学化工学院,内蒙古赤峰024000 [2]内蒙古民族大学分析测试中心天然产物开发与废弃物利用研究所,内蒙古通辽028000

出　　处：《中国无机分析化学》2016年第2期51-53,共3页Chinese Journal of Inorganic Analytical Chemistry

基　　金：国家自然科学基金项目(21261015);内蒙古自然科学基金(2015MS0221);通辽市与内蒙古民族大学科技合作项目(SXYB2012032)资助

摘　　要：采用离子色谱法同时测定苦荞粉、苦荞壳、苦荞叶、苦荞杆中Na、K、Ca、Mg等4种元素含量,并对元素进行了对比研究,同时对各元素进行了加标回收实验,苦荞粉、苦荞壳、苦荞叶、苦荞杆中各元素的平均回收率在94.00%-102.7%,相对标准偏差（RSD）在0.88%-2.8%,测定范围为0.89-999.10μg/L。实验建立了简便、快速、准确和稳定的测定苦荞粉、苦荞壳、苦荞叶、苦荞杆中无机元素的方法。结果显示苦荞叶中Ca和Mg的含量均很高,分别为17 208.8mg/kg和3 954.5mg/kg,苦荞壳中钾和钠含量很高,分别为4 849.1mg/kg和1 269.2mg/kg;在苦荞叶中Ca、Mg等营养元素的含量较苦荞粉中的高,所以苦荞叶有开发应用价值。An ion chromatography method for simultaneously determining four inorganic elements （Na, K, Ca and Mg） in the powders, shells, leaves and stalks of tartary buckwheat was established. Comparative study on the above-mentioned elements was performed. The spike recovery tests were conducted and the average recovery for each element was 94.00%-102.7%. The relative standard deviation （RSD） was 0.88%-2.8% with 0. 89-999.10 μg/L detection limit. It provides a simple, rapid, accurate and stable method to measure inorganic elements in the powders, shells, leaves and stalks of tartary buckwheat. The results show that the contents of Ca and Mg in the tartary buckwheat leaves are very high, reaching 17 208. 8 mg/kg and 3 954.5 mg/kg, respectively. The contents of K and Na in shells are also very high （4 849. i mg/kg for K and 1 269.2 mg/kg for Na）. The contents of nutrient elements such as Ca and Mg in the leaves are higher than those in the powders. Therefore, the leaves of tartary buckwheat have development and application value.

关 键 词：离子色谱法 苦荞粉 苦荞叶 同时测定 

分 类 号：O657.75[理学—分析化学] TH833[理学—化学]