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[求助] EDX表征陶瓷元素含量 使用Oxygen by Stoichiometry功能的原理

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AZtec系统中 使用Oxygen by Stoichiometry分析数据结果的原理是什么 为什么阳离子的相对原子百分比会改变?(如材料含有AO,BO,则A/B的含量应保持不变)谢谢~

PS 官网说的是“Many minerals contain oxygen bonded with a range of cations. It is common practice to calculate the amount of oxygen in the sample by measuring the percentages of the cations and calculating oxygen by stoichiometry. This generally is more accurate than analysing for oxygen.” 我的理解应该是不改变阳离子的比,求指点
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