【摘要】 采用气相色谱仪研究了吉林省长春市具有代表性的功能区表层土壤中正构烷烃的组成和分布特征,对其来源进行了分析。研究结果表明:不同功能区土壤中正构烷烃Pr/Ph(姥鲛烷/植烷)平均为0.79,碳优势指数CPI1平均值为0.78,主要来源于陆生高等植物和人类活动源,其组成及质量分数存在明显差异;其中城区交通干道、工厂区、加油站等功能区,土壤中正构烷烃质量分数达到10×10-6以上,明显高于其他地区;原因是化石类燃料的大量密集使用对周边环境造成了污染。更多还原

【Abstract】 The composition and distribution of n-alkanes in the surface soils from representative functional areas of Changchun City of Jilin Province was studied by using gas chromatograph,their origins were also analyzed.The results showed that there were obvious differences about the composition and contents of n-alkanes among the soil from different functional areas,the average value of Pr/Ph is 0.79 and CPI1 is 0.78,the n-alkanes were mainly originates from terrestrial higher plants and human activities.The mass percents of n-alkanes in the soil of functional areas such as traffic road,plant,gas station were over 10×10-6,which were significantly higher than the other regions,due to the pollution on the surrounding environment caused by intensive use of fossil fuel.更多还原