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Based on a petrochemical plant for the study area contaminated soil by soil pollution monitoring, using SPSS to determine the content of organic pollutants with a function of depth , and the use of a single factor pollution index , Nemerow Pollution Index and Health Risk Assessment methods of soil organic pollution pollution assessment carried out . Based on the evaluation results, the pollution control measures . After research and evaluation , the following conclusions : ( a ) have a variety of organic pollutants on soil pollution , the upper pollution is serious, especially benzene pollution unusually severe , with depth deepens, pollution levels gradually decreased to 2.0m depths of the soil is not contaminated. ( 2 ) and the depth of the soil contaminants in function exists between the different pollutants function curve corresponding to different , wherein the soil depth is a logarithmic relationship chlorotoluene and 2,4 - dimethyl phenol , benzene exponential relationship , the relationship is the inverse function was chlorobenzene and nitrobenzene , toluene linear relationship and aniline , showed a cubic function of a 2 - nitrophenol, quadratic function relationship of 2 - chlorophenol and naphthyl . ( 3 ) Health Risk Assessment results show that there is a certain venue carcinogenic and non- carcinogenic risk , the exposure pathways non- carcinogenic and carcinogenic risks order: breathing polluted air intake pathway gt; oral ingestion pathway gt; skin contact photo route of entry gt; breathing particulate matter intake pathway . The risk of non-carcinogenic substances and carcinogenic risks play a major role as benzene, nitrobenzene and aniline. ( 4 ) on the incineration and landfill management program to compare two sets of results show that the landfill soil composition for treatment is not required , small investment, low processing cost , the factory recommended landfill soil treatment.
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