Omidi Saadat, Teiri Hakimeh, Mohammadi Farzaneh, Hajizadeh Yaghoub
Student Research Committee, Faculty of health, Isfahan University of Medical Sciences, Isfahan, Iran.
Department of Environmental Health Engineering, Faculty of Health, Isfahan University of Medical Sciences, Isfahan, Iran.
Int J Phytoremediation. 2025;27(2):260-270. doi: 10.1080/15226514.2024.2413414. Epub 2024 Oct 12.
This study aimed to biomonitor air pollution by measuring heavy metals (HMs) accumulation levels in the leaves of common urban trees, , L., L. and in different regions of Isfahan. Their association with the levels of PM and PM-bond HMs was also investigated. PM were collected on a glass-fiber filter and measured by gravimetric method. The HM contents of the PM and tree leaves were extracted and analyzed by ICP-OES. The average PM concentrations in ambient air of all areas varied from 52.34 to 103.96 μg/m. The mean HMs levels in the leaves were in the following orderZn(31.2) > Cu(11.04) > Pb(4.38) > Ni(4.01) > Cr(3.03) > Co(0.61) > Cd(0.04) (μg/g). The highest level of HMs was detected in the leaves of L followed by L. and . There was a significant correlation between the amounts of Pb and Cu in tree leaves and those in ambient PM ( value ≤ 0.05). In conclusion, tree leaves can be used as a suitable bioindicator in the evaluation of air pollution. L. compared to the other species can be confidently used for green space development.
本研究旨在通过测量伊斯法罕不同地区常见城市树木（桑树、杨树和柳树）叶片中重金属（HMs）的积累水平来进行空气污染生物监测。还研究了它们与颗粒物（PM）和与PM结合的HMs水平之间的关系。PM收集在玻璃纤维滤纸上，采用重量法进行测量。PM和树叶中的HM含量通过电感耦合等离子体发射光谱法（ICP - OES）进行提取和分析。所有区域环境空气中的PM平均浓度在52.34至103.96μg/m之间。树叶中HMs的平均水平顺序如下：锌（31.2）>铜（11.04）>铅（4.38）>镍（4.01）>铬（3.03）>钴（0.61）>镉（0.04）（μg/g）。桑树叶片中检测到的HMs水平最高，其次是杨树和柳树。树叶中的铅和铜含量与环境PM中的铅和铜含量之间存在显著相关性（p值≤0.05）。总之，树叶可作为评估空气污染的合适生物指示物。与其他物种相比，桑树可放心用于绿地建设。
