Study On Methods Of Partial Extration In Searching Concealed Deposits In Loess Covered Area

Traditional geochemical methods is effective for searching surface ore bodies but not good at the concealed deposits.As the surface mineral resources are depleted, the beginning of the international community is committed to a greater depth of exploration of new methods of geochemical research, put forward the concept of deep-penetrating geochemical and development of the deep-penetrating geochemical methods.In recent years, deep-penetrating geochemical methods in many areas has been a breakthrough. China’s research in the gas was a big improvement, but the existence of gas method to the problem of its own, in the production of large area application may encounter greater difficulties. The use of special methods of mobile metals ion in soil solution of these problems is the main way. Because the soil as a natural trap agent, you can catch from the deep mineralization information, there is no duplication of soil samples and testing of sampling problems. China’s mobile metals ion extract research has lagged research and extraction methods of thinking and could not shake off the shackles of traditional methods, since it is difficult to achieve a breakthrough, or remain in the analysis phase of the level. Therefore, the ideas must be open, breaking the tradition of Western countries at the same time learn from the success of research ideas and experience, the true realization of China’s search for hidden mineral geochemical methods of technological breakthroughs.In this paper, the coverage area on the selectivity of mobile metals ion extraction methods studied the problems. To push for anti-thinking, with a special reagent (A reagent) on the upper section of the known ore body of the experimental extraction of soil samples, the results of comparison of data of known characteristics, such as the location of ore bodies, looking for the best extraction program, the best experimental conditions in order to push the anti-migration of metal elements in the mechanism and mode of occurrence. And select the characteristics of three different areas of the landscape for the study of soil samples, reagents A comparative study of extraction methods of landscape features at different results.Through the experiment, have been aware of the following points:1.A preliminary confirmed mobile metals ion reagent in the loess covered area, covered by alluvial deposits cover areas and grassland areas of the validity of concealed mineral exploration.2. Different landscape areas should be used in different concentrations in the extraction agent in JiaoLongZhang, the best concentration of 2%; grassland area in Inner Mongolia and Shandong alluvial covered area should be to reduce the concentration of extraction agent, the best concentration of 0.5%.3.The experimental data of JiaoLongZhang showed that the concentration of A reagent is 2%: Extracts from the pH value of solution, there is a point mutation (lower); soil before and after extracting the maximum weight change. And 2% is exactly the dynamic live dragon palm extract the best concentration, therefore, the study area in the new live dynamic extraction applications, the first point should look for mutations in order to determine the optimal concentration.