In recent years, research projects have been actively carried out by research institutes in various countries to determine the existence of nano-dispersed gold and other noxious gold and to increase the rate of mistakes of gold ore. In some countries, JEM-1000 electron microscope observations of clay minerals based on water-borne moths have shown that gold grains with a size of several tens of nanometers are present in mucus. In Korea, there are opinions that nano-dispersed gold exists, but very accurate data on scientific research results are rarely presented. [1, 2] In the lecture, a reasonable analytical method for analyzing nanodisperse gold by using scanning electron microscope combined with energy dispersive X-ray analyzer is established, and its existence state (size, shape, distribution state , Compound state).
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