Research on transformation characteristics of humic acid based on improved three-dimensional fluorescence regional integral

This paper mainly studied transformation characteristics of humic acid in aqueous medium from coal-mining region of Pingdingshan. To achieve the research purpose, we carried out soil columns experiment. In this experiment, humic acid solution is used as water sample, meanwhile, marl rock are used as testing rock sample. Soon after the experiment, three-dimensional fluorescence technology was took to test humic acid. In order to improve precision of three-dimensional fluorescence, we applied the analytic hierarchy process (AHP) to the traditional regional integration method. Then the improved regional integral was utilized to analysis experiment result. The three-dimensional fluorescence regional integral results of marlstone show that from 192h to 600h, proportion of region V let up from 0.456 to 0.065, however, proportion of region IV added from 0.372 to 0.502. Apparently Humic acid has transformed in the marlstone. This kind of transformation is mainly degradation Humic acid was degraded into soluble metabolic products by microorganism. And for that the percentage of region V minished when the percentage of region IV added.