微波消解电感耦合等离子体原子发射光谱法测定某些粗粮中的矿物元素

Li Yang, Qinghua Yan, Yinping Cao, Hui-rong Zhang
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引用次数: 8

摘要

为测定谷子、玉米、燕麦、荞麦、高粱和紫米中矿质元素的含量,采用优化的微波消解程序对6种粗粮进行消解。采用电感耦合等离子体原子发射光谱法(ICP-AES)测定了19种矿物元素的浓度。结果表明,检测限和定量限分别为0.0047 ~ 0.1250 μg/mL和0.0155 ~ 0.4125 μg/mL。相对标准偏差(rsd)在0.83% ~ 5.03%范围内,表明该方法具有较好的准确度和精密度,可同时检测粗颗粒中的矿物元素。相关系数(r)在0.999096 ~ 0.999989范围内计算。所获得的充分数据说明所选择的粗粮在日常饮食中具有丰富的人体矿物质元素含量。微波消解技术与电感耦合等离子体发射光谱(ICP-AES)相结合,为同时测定粗粮中多种矿物元素提供了一种简便、精确的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Determination of Mineral Elements of Some Coarse Grains by Microwave Digestion with Inductively Coupled Plasma Atomic Emission Spectrometry
To determinate the mineral elements contents in millet,maise,oat,buckwheat,sorghum and purple rice, microwave digestion procedure optimized was applied for digesting six coarse grains. Nineteen mineral element concentrations were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). Results displayed the limits of detection (LODs) and the limits of quantification (LOQs) range from 0.0047 to 0.1250 μg/mL and 0.0155 to 0.4125 μg/mL. The relative standard deviations (RSDs) range from 0.83% to 5.03%, which showed that this proposed method was accurate and precise to detect mineral elements in coarse grains simultaneously. Correlation coefficients (r) were calculated in the range of 0.999096-0.999989. The sufficient dada obtained described that the coarse grains selected were abundant in mineral element contents in the human body on daily diet. The success of combining the microwave digestion technology with the ICP-AES was a simple and precise method to determine many mineral elements in coarse grains simultaneously.
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来源期刊
E-journal of Chemistry
E-journal of Chemistry CHEMISTRY, MULTIDISCIPLINARY-
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