Total porosity of impregnated thin sections can be measured using X-ray fluorescence. The technique requires an impregnating fluid which contains an element not contained in more than trace quantities by the rock. By measuring the intensity of fluorescence generated by bombarding the impregnated thin...http://www.google.com.tw/patents/US4797906?utm_source=gb-gplus-share專利 US4797906 - Nondestructive method for analyzing total porosity of thin sections