南京市树叶附尘对大气重金属污染的磁学响应
发布时间：2019-01-18 13:06
【摘要】：在南京10个国家空气质量监测站点附近采集桂花、樟树和雪松树叶,测试其磁性参数和重金属含量,分析监测站大气颗粒物浓度、树叶重金属与磁性参数的相互关系.结果表明:3种树叶中重金属含量较高的是Fe、Mn、Cu和Pb,As、Cd和Sb较低.Pb、Cu和Sb在交通密集区含量较高;Ni、Cd和Mn在工业区含量较高;V、Cr和Fe在靠近建筑工地的地区含量较高.V、Fe、As、Pb、Sb和Cr与树叶附尘中磁性矿物具有相似来源.对比3种树叶,雪松更易富集颗粒物,其磁性参数和重金属含量均较高,同时,雪松树叶附尘中大部分重金属含量与其磁性参数的相关性较高;而桂花树叶的SIRM值与监测站大气颗粒物浓度高低具有较好一致性.常绿树叶的磁性参数有潜力用来评估城市大气污染.
[Abstract]:The leaves of Osmanthus camphora and Cedar were collected near the air quality monitoring stations in 10 countries in Nanjing. The magnetic parameters and heavy metal contents were measured. The relationship between the concentration of particulate matter in the atmosphere and the heavy metals and magnetic parameters in leaves was analyzed. The results showed that the contents of heavy metals in the leaves of the three species were lower than those of Fe,Mn,Cu and Pb,As,Cd and Sb, Pb,Cu and Sb were higher in dense traffic areas, Ni,Cd and Mn were higher in industrial areas. The contents of VG Cr and Fe are higher in the area near the construction site, and the magnetic minerals in the dust of leaves are similar to the magnetic minerals in the leaves dust. Compared with the three leaves, Cedar is easier to enrich particulate matter, its magnetic parameters and heavy metal content are higher, at the same time, most of heavy metal content in the dust of Cedar leaves has a high correlation with its magnetic parameters. The SIRM value of Osmanthus fragrans leaves is consistent with the concentration of particulate matter in the monitoring station. Magnetic parameters of evergreen leaves have the potential to be used to assess urban air pollution.
【作者单位】： 南京大学环境学院污染控制与资源化研究国家重点实验室;
【基金】：国家自然科学基金青年项目(41501549)
【分类号】：X12;X51
本文编号：2410749
[Abstract]:The leaves of Osmanthus camphora and Cedar were collected near the air quality monitoring stations in 10 countries in Nanjing. The magnetic parameters and heavy metal contents were measured. The relationship between the concentration of particulate matter in the atmosphere and the heavy metals and magnetic parameters in leaves was analyzed. The results showed that the contents of heavy metals in the leaves of the three species were lower than those of Fe,Mn,Cu and Pb,As,Cd and Sb, Pb,Cu and Sb were higher in dense traffic areas, Ni,Cd and Mn were higher in industrial areas. The contents of VG Cr and Fe are higher in the area near the construction site, and the magnetic minerals in the dust of leaves are similar to the magnetic minerals in the leaves dust. Compared with the three leaves, Cedar is easier to enrich particulate matter, its magnetic parameters and heavy metal content are higher, at the same time, most of heavy metal content in the dust of Cedar leaves has a high correlation with its magnetic parameters. The SIRM value of Osmanthus fragrans leaves is consistent with the concentration of particulate matter in the monitoring station. Magnetic parameters of evergreen leaves have the potential to be used to assess urban air pollution.
【作者单位】： 南京大学环境学院污染控制与资源化研究国家重点实验室;
【基金】：国家自然科学基金青年项目(41501549)
【分类号】：X12;X51
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