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| 微波消解-原子吸收法测定花生中钙、镁、铜和锌的含量 |
| Determination of contents of Ca, Mg, Cu and Zn in peanut by microwave digestion-atomic absorption spectrometry |
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| DOI： |
| 中文关键词: 微波消解；原子吸收；花生 微量元素 |
| 英文关键词:microwave digestion atomic absorption spectrometry peanut trace element |
| 基金项目: |
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| 中文摘要: |
| 利用微波消解仪将花生消解，用原子吸收法测定去壳花生中钙、镁、铜和锌的含量。研究了微波消解条件对测定结果的影响。结果表明：用30%过氧化氢和浓硝酸作为消化液，工作曲线的相关系数在0.999 1~0.999 3之间，4种微量元素的加标回收率在96.51%~100.49%之间，检出限在0.125 1~0.750 1 μg/mL之间；菏泽去壳花生中钙、锌、镁、铜都有相对较高的含量。该方法具有方便快捷、准确可靠等优点，是花生中4种元素测定的理想方法。 |
| 英文摘要: |
| The contents of Ca, Mg, Cu and Zn in the shelled raw peanut were determined by atomic absorption spectrometry with microwave digestion. The effects of microwave digestion conditions on determination result were studied. The results showed that using 30% H2O2 and concentrated HNO3 as digestion solution, the correlation coefficients of the working curve, the recovery rates of standard addition of four trace elements and the limits of detection were 0.999 1-0.999 3, 96.51%-100.49% and 0.125 1-0.750 1 μg/mL, respectively. The contents of Ca, Zn, Mg and Cu in the shelled raw peanut in Heze were higher. The method had the items of convenience, efficient and accuracy, which was an ideal method for the determination of four kinds of elements in peanut. |
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