北京林业大学学报2016，Vol.38Issue(1)：59-66,8.DOI:10.13332/j.1000-1522.20150164
不同PM2.5污染区常见树种叶片对PAHs的吸收特征分析
Absorption features of PAHs in leaves of common tree species at different PM2.5 polluted places
摘要
Abstract
Leaves of six tree species were collected from two sites with different atmospheric PM2.5 levels in Beijing,i.e.,the National Olympic Forest Park and Xizhimen traffic hub.The components and concentrations of PAHs absorbed were measured using high performance liquid chromatography,and were compared among the six tree species.The relationship between leaf PAHs concentration and atmospheric PM2.5 level was preliminarily investigated.The results showed that PAHs contents in the leaves of coniferous trees such as Sabina chinensis and Pinus tabuliformis were higher than those of broadleaf trees.The content of PAHs in Amygdalus persica was the highest,followed by Populus tomentosa.In addition,as the pollution was aggravating,tree species could enhance the ability to absorb PAHs to adapt to the environmental pollution.For all the six tree species,PAHs contents in leaves sampled from the Xizhimen traffic hub with higher PM2.5 level were higher than those from the National Olympic Forest Park.Three-ring compounds were the major component in leaf-absorbed PAHs,followed by two-ring,four-ring and five- or six-ring compounds.The contents of compounds with different ring numbers in the leaf samples from Xizhimen traffic hub were higher than those from National Olympic Forest Park.Both three-ring compounds and contents in the leaf samples from Xizhimen traffic hub were higher than those from National Olympic Forest Park.A principal component analysis based on the contents of different PAHs components suggested that the ability of the species to absorb PAHs followed the order of Sabina chinensis>Amygdalus persica>Pinus tabuliformis>Populus tomentosa>Ulmus pumila>Prunus cerasifera.关键词
北京/常见树种/PM2.5/PAHs/主成分分析Key words
Beijing/common tree species/PM2.5/PAHs/principal component analysis引用本文复制引用
安海龙,刘庆倩,曹学慧,张罡,王慧,刘超,郭惠红,夏新莉,尹伟伦..不同PM2.5污染区常见树种叶片对PAHs的吸收特征分析[J].北京林业大学学报,2016,38(1):59-66,8.基金项目
林业公益性行业科研专项(201304301). （201304301）
