X-ray photoelectron spectroscopic study of the surface composition of sediment or soil models
Abstract X-ray photoelectron spectroscopy was applied to analyze the surface composition of sodium dihydrogenphosphate/ferric oxide systems and montmorillonite which were chosen as model sediment (soil) systems. Striking differences in the photoelectron emission intensities for certain elements were observed for samples of differing preparations and where the bulk composition of elements were retained. Adsorbed phosphate ion was persistent on ferric oxide surface against repeated leaching by water where sodium ion was lost completely from the surface.
Question about classification of ground water quality was studied by using Self-organizing Feature Map(SOM) method,taking Yujiagou area polluted by leachate of abandoned open-pit coal mine of Xinqiu in Fuxin as example.The water quality of 17 wells in the area polluted were classified in different degrees with different train epochs by using correlation functions in MATLAB and area polluted was determined.It is indicated by studied results that main party of grand water in Yujiagou area has been polluted and can not be drunk,and the results of classification is identical comparing with comprehensive index method,fuzzy comprehensive appraisal and grey associated analysis etc.,and application of SOM in classification of ground water quality is feasible.