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底面X射线粉末衍射(XRD)峰的相对强度可用来估算绿泥石中重原子的含量和分配。然而,要使这些峰值具有估算意义,必须进行样品厚度、样品长度和矿物颗粒择优取向效应的校正。所有这些效应都与2θ有关,可用一简单的公式进行样品厚度效应的校正。样品长度效应可通过使用矩形样品得到消除,只要矩形样品能保证在所研究的衍射角范围内样品与整个X射线束相交。矿物颗粒的择优取向可以测量或估算,获得估算值较快也较容易,并且误差不超过测量值的5％.将进行这些样品效应校正之前估算的绿泥石成分参数与校正之后估算的那些成分参数加以比较,可以看出未校正的值与校正值不一样,误差可达校正值的55％.如果对测量数据不做这些效应的校正,则同一种样品用滤膜片和多孔板两种不同的方法制备将产生大不一样的成分结果.重复三次的分析结果表明,在计算绿泥石中重原子的分配和含量时,最好使用XRD强度比值003/001,因为001峰相对较强.
The relative intensities of the bottom X-ray powder diffraction (XRD) peaks can be used to estimate the content and distribution of heavy atoms in chlorites. However, for these peaks to be of significance, calibrations of sample thickness, sample length, and preferential orientation of mineral particles must be performed. All of these effects are related to 2θ, and a simple formula for the correction of sample thickness effects can be used. The sample length effect can be eliminated by using a rectangular sample as long as the rectangular sample ensures that the sample intersects the entire X-ray beam within the range of diffraction angles studied. The preferred orientation of the mineral particles can be measured or estimated, the estimates obtained are quicker and easier, and the error does not exceed 5% of the measured value. The chlorite composition parameters estimated prior to these sample effect corrections and those estimated after correction The parameters can be compared, you can see the uncorrected value and the correction value is not the same, the error of up to 55% of the corrected value.If the measurement data do not do these effects of the correction, the same sample with two kinds of membrane and porous plate The results of the different methods will produce very different composition results repeated three times the analysis showed that in the calculation of chlorite heavy atom distribution and content, the best use of XRD intensity ratio 003/001, 001 peak is relatively strong .