【摘要】 研究了乌鲁木齐某含油废水污灌区不同土地类型(林地、葵花地、玉米地、荒地)0～100cm的土壤中正构烷烃的分布特征和来源。结果表明,表层(0～20cm)土壤中正构烷烃质量浓度为4.30～8.43mg/kg,呈现林地>玉米地>荒地>葵花地的特点,与国内外其他地区相比受到中等程度的污染。土壤中正构烷烃含量随深度增加整体呈递减趋势。不同土地类型不同土层中正构烷烃种类相似,但不同深度土壤中不同碳原子数的正构烷烃质量分数差异显著(P<0.05)。研究区土壤中正构烷烃来源为混合源,包括化石燃料不完全燃烧和木本植物的释放。更多还原

【Abstract】 Distribution characteristics and sources of n-alkanes in 0-100 cm soils of Urumqi oil-bearing waterwater irrigation area were studied,considering different landuse types(forest land,sunflower land,corn field and wasteland).Results showed that the mass concentration of n-alkanes in topsoil(0-20 cm)was 4.30 to 8.43 mg/kg,which was moderately polluted compared with other regions at home and abroad.The distribution characteristics in different landuse types were forest land>corn land>wasteland>sunflower land.The content of n-alkane decreased with the depth.The kinds of the n-alkanes in different depths of soil with different landuse types were similar,but the components’ mass fraction were significantly different(P <0.05).The source turned out to be mixed source,including incomplete combustion of the fossil fuel and woody plants release.更多还原