南京市樹葉附塵對(duì)大氣重金屬污染的磁學(xué)響應(yīng)
發(fā)布時(shí)間：2019-01-18 13:06
【摘要】：在南京10個(gè)國家空氣質(zhì)量監(jiān)測(cè)站點(diǎn)附近采集桂花、樟樹和雪松樹葉,測(cè)試其磁性參數(shù)和重金屬含量,分析監(jiān)測(cè)站大氣顆粒物濃度、樹葉重金屬與磁性參數(shù)的相互關(guān)系.結(jié)果表明:3種樹葉中重金屬含量較高的是Fe、Mn、Cu和Pb,As、Cd和Sb較低.Pb、Cu和Sb在交通密集區(qū)含量較高;Ni、Cd和Mn在工業(yè)區(qū)含量較高;V、Cr和Fe在靠近建筑工地的地區(qū)含量較高.V、Fe、As、Pb、Sb和Cr與樹葉附塵中磁性礦物具有相似來源.對(duì)比3種樹葉,雪松更易富集顆粒物,其磁性參數(shù)和重金屬含量均較高,同時(shí),雪松樹葉附塵中大部分重金屬含量與其磁性參數(shù)的相關(guān)性較高;而桂花樹葉的SIRM值與監(jiān)測(cè)站大氣顆粒物濃度高低具有較好一致性.常綠樹葉的磁性參數(shù)有潛力用來評(píng)估城市大氣污染.
[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.
【作者單位】： 南京大學(xué)環(huán)境學(xué)院污染控制與資源化研究國家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金青年項(xiàng)目(41501549)
【分類號(hào)】：X12;X51
本文編號(hào)：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.
【作者單位】： 南京大學(xué)環(huán)境學(xué)院污染控制與資源化研究國家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金青年項(xiàng)目(41501549)
【分類號(hào)】：X12;X51
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