ICP-OES法同时测定燕麦片中的钾、钠、钙、镁、铁、锌

摘要

The determination method of potassium, sodium, calcium, magnesium, iron, zinc in oatmeal was established by the optimization of ICP-AES instruments conditions, with three different digestion methods. The results show that the linear relationship of each element elements is good, the correlation coefficient is above 0.999 9, the relative standard deviation is 1.5%~3.3% and the recovery rate is 82.3%~ 109.4%. The method is operated conveniently, with high accuracy and good precision. The test results of both the method (ICP-OES) and the national standard method are consistent, with no significant difference, and suitable for determination of mineral element in oatmeal.%通过对ICP-OES仪器条件的优化，采用3种不同消解方法，建立了燕麦片中钾、钠、钙、镁、铁、锌各元素的测定方法。试验结果表明，该方法中各元素的线性关系良好，相关系数均在0.9999以上，其相对标准偏差为1.5%～3.3%，回收率为82.3%～109.4%。该方法操作便捷、准确度高、精密度好，与国标方法比较检测结果一致，无显著性差异，适用于燕麦片中矿物质元素的测定。