(Table 3) Peak intensity ratios in the <2 µm fraction and smectite crystallin...

For the calculation of the peak intensity ratio the peak height of the clay minerals was divided by the peak height of the internal standard of the same XRD trace.为计算峰强度比，需将粘土矿物的峰高除以同一条X射线衍射（XRD）图谱中内标（internal standard）的峰高。