Comparative research on petroleum composition between Pro-release and Post-release at the low petroleum contaminant sediments

The high concentration oil wastewater would pollute the soil by a series of physical chemistry actions. Under the water dynamical activity, the petroleum in soil would pollute the water body. By analyzing the oil composition in sediments the degree of polluted water was discussed, which supportted the scientific basement for environment protection. When the oil concentration was 320mg/kg in contaminant sediments, the balance was obtained on day 16 at static water body. By comparing composition between Pro-release and Post-release sediments the substances, which could enter the water body, was connected with density, carbon number, and molecular mass. The lower density, carbon number, and molecular mass substances, it would be the more easy to pollute water. The carcinogenic and mutagenicity pollutant which could enter the water were slight but would be terrible dangerous to environment and human health.