4个树种叶片的重金属含量特征及其指示大气污染的研究

发布时间：2018-01-11 07:27

本文关键词：4个树种叶片的重金属含量特征及其指示大气污染的研究　出处：《浙江林业科技》2016年05期 　论文类型：期刊论文

【摘要】：2015年3月,对上海市浦东新区5个区域的雪松(Cedrus deodara)、冬青(Ilex chinensis)、樟(Cinnamomum camphora)、荷花玉兰(Magnolia grandiflora)4个种树的叶片Pb,Cd,Zn,Cu含量进行测定和分析,研究植物重金属含量与大气污染之间的关系。结果表明,所测植物叶片中Pb,Cd,Zn和Cu的累积量与大气中Pb,Cd,Zn和Cu的相对含量呈显著正相关;4个树种叶片的重金属含量因其种类、采样区域和树种的不同差异显著,其中荷花玉兰的Pb和Cu的累积量最高,雪松的Cd和Zn的累积量最高。分析显示出浦东新区大气质量状况,交通流量大的杨高路金桥路属重污染区,高桥石化分公司和郊环线G1501属中度污染区,洋泾社区属轻度污染区,对照属无污染区。
[Abstract]:In March 2015, Cedrus deodara, Ilex chinensis, of 5 districts in Pudong New District, Shanghai. The leaves of Cinnamomum camphora and Magnolia grandiflora) were studied. The relationship between heavy metal content and air pollution in plants was studied. The results showed that the accumulations of Pb ~ (2 +) CD ~ (2 +) and Zn and Cu in leaves of plants and the contents of Pb ~ (2 +) CD in the atmosphere were determined and analyzed. There was a significant positive correlation between the relative contents of Zn and Cu. The contents of heavy metals in leaves of four species were significantly different according to their species, sampling area and tree species, and the accumulation of Pb and Cu was the highest in Magnolia magnolia. The accumulation of CD and Zn in Cedar is the highest. The analysis shows that the atmospheric quality of Pudong New area is high, and the heavy pollution area of Jinqiao Road of Yanggao Road with large traffic flow. G1501 of Gaoqiao Petrochemical Branch and suburban Ring Line belong to medium polluted area, Yangjing Community belongs to light polluted area, and the control belongs to unpolluted area.
【作者单位】：华东理工大学资源与环境工程学院国家环境保护化工过程环境风险评价与控制重点实验室;上海市医药学校;南京大学金陵学院化学与生命科学学院;上海市浦东新区公路管理署;
【基金】：上海市医药学校内涵建设校级课题
【分类号】：X51;S718.45
【正文快照】： 大气中的重金属如汞(Hg)、铬(Cd)、铅(Pb)、锌(Zn)等主要来自工业生产、生活炉灶与采暖锅炉、交通运输所产生的有害气体和粉尘等[1],可经呼吸及食物链系统对人体和动物的健康产生毒害,具有滞留时间长、明显的富集效应和迁移能力等特点[2~4]。目前,大气污染指示植物的研究包括

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