The Study of Relationship Between Every Shape Pb and Total N,C Content in Soil

The study takes the greenbelt soil at both sides of national highway in YOKOHAMA and the soil of campus Yokohama National University as study areas. It adopts successive soaked extractive-ICP method to analyze the content of lead which is presented in various forms, such as water soluble, Sequential, bound to carbonates, bound to Fe-Mn oxides, bound to organic matter and residual at 0~5 cm and 20~25 cm of soil surface. Meanwhile, it studies relationship between the content change and total N, C . The result shows: two study areas in YOKOHAMA are polluted .the lead content in green lend of campus is remarkably higher than in state-road's two sides soil. The analysis showed that the total N C in soil state-lead- carbonate present the positive linear correlation and establish the regress model by the regress analysis method.