Correlation Study of 137Cs and 210Pbex Content and Soil Particle Composition in Zhenjiang Area

摘要

The soil particle adsorption to nuclide is important for establishingrelation model between soil erosion and the variation of nuclides content ,so, the correlation between 137Cs 210Pbex content and soil particle composition become the key of establishing relation model.the research that the correlation between 137Cs 210Pbex content and soil particle composition in Zhenjiang area show that:the strong positive relation between 137Cs content and soil particles that the particle size is ＜2μm and 2-5μm;the Negative correlation between 137Cs content and soil particles that the particle size is 10-50μm, the correlation between 210Pbex content and soil particles is complex ,propably that the correlation is effected by source and Chemical properties and the external influence factors ,there is no relevant between 137Cs 210Pbex.through the research between 137Cs 210Pbex content and soil particle composition,and explores the effect that the soil particle adsorption to 137Cs, 210Pbex and the distribution of the 137Cs, 210Pbex to provides reference data for improve soil erosion model.