When certain component, in a mixture with other components, has to be determined in a sample, one cannot directly compare line intensities of the pure component, proposed under identical conditions as the sample, because of the absorption effects of the matrix pertaining to the sample.
Reference:
Copeman, J. & Von Wolff, W. 1968. The quantitative determination of quartz by means of x-ray diffraction methods. http://hdl.handle.net/10204/12914 .
Copeman, J., & Von Wolff, W. (1968). The quantitative determination of quartz by means of x-ray diffraction methods Retrieved from http://hdl.handle.net/10204/12914
Copeman, JH, and WTE Von Wolff The quantitative determination of quartz by means of x-ray diffraction methods. 1968. http://hdl.handle.net/10204/12914
Copeman J, Von Wolff W. The quantitative determination of quartz by means of x-ray diffraction methods. 1968 [cited yyyy month dd]. Available from: http://hdl.handle.net/10204/12914