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X射線定量相分析直接對比方法的一個新的處理方式

  • 摘要: 若在i相混合物(重\sum \rmg_1克)中加入標準物質S的粉末(重gs克)時,可列出以下聯立方程\\left\ \beginarrayl\frac\rmV_\rm1\rmV_\rms\rm = \frac\rmI_\rm1\rmI_\rms\rm \bullet \frac\rmK_\rms\rmK_\rm1\\\rmV_\rm1\rm + V = 1\endarray \right.\式中I為衍射X線的積分強度,K為有關強度因子的乘積。解方程可求出暫設體積分量V。
    因在以上方程中假設樣品僅由i相及標準物質S所組成,所以對于暫設重量分量G也可寫出:G1+Cs=1。由V可求出G,又因;\\rmG_\rms\rm = \frac\rmg_\rms\rmg_\rms\rm + \rmg_\rm1 \times 100\% \即可求出i物相在混合物樣品中的重量g1

     

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