选择西南地区某军事训练场及军事油库区土壤,采用溶剂萃取和高效液相色谱分析方法,进行土壤中多环芳烃污染质量比、来源和风险水平研究,并对军事场地、工业场地、污灌农田土壤多环芳烃进行评价对比,分析各种类型土壤多环芳烃污染的异同点。结果表明,不同类型土壤中多环芳烃质量比存在较明显差异,总质量比从小到大顺序为军事油库土壤、军事训练场土壤、污灌农田土壤、工业土壤。军事训练场、军事油库区土壤为油类、草木等燃烧与石油类的混合污染,污灌农田土壤为草木燃烧与石油类的混合污染,工业土壤为煤炭高温燃烧所致。苯并 芘等效质量比从小到大顺序为军事训练场土壤、军事油库区土壤、污灌农田土壤、工业土壤。根据土壤环境质量标准,军事训练场土壤和军事油库土壤处于安全水平以内,工业土壤存在严重健康风险。
This paper is intended to present the results of our comparative study of the contamination consequences brought about by the different forms of land uses by taking samplings from a China southwest military base. For our research purpose, we have studied the samples by means of solvent extraction and highly-efficient liquid chromatography analysis and measuring their concentrations, sources and likely hazards of the polycyclic aromatic hydrocarbons (PAHs) in the soils. Comparing the PAHs in the soils from the military site, the industrial site and sewage irrigation farming areas let us find the total PAHs content in the above samples in the following order: the military oil depot soils〈 the military training ground soils