@article{wjac201531A1,
author={{Bing, Liu and Zhou, Yong and Li, Ye and Azzam, Khaldun M. Al and Aboul-Enein, Hassan Y.},
title={A Comparative Study of the Contents of Cadmium and Chromium in Leaves of Seventeen Kinds of Road Greening Trees},
journal={World Journal of Analytical Chemistry},
volume={3},
number={1A},
pages={1--5},
year={2015},
url={http://pubs.sciepub.com/wjac/3/1A/1},
issn={2333-1283},
abstract={The greening trees can absorb heavy metal pollutants in the atmosphere. This study investigates the cadmium (Cd) and chromium (Cr) content in the leaves of 17 kinds of greening trees in Xinxiang City, China. The result shows that heavy metal content of the same greening tree in polluted area is more than that in clear area; that in autumn is more than that in spring; chromium content is more than cadmium content. Heavy mental content of different greening trees differ from each other, which ranks as follws: Populus alba > Acer mono > Populus tomentosa > Ligustrum quihoui > Ligustrum lucidum > Purple-leaf plum > Buxus megistophylla > Koelreuteria paniculata > Platanus acerifolia > Ailanthus altissima > Broussonetia papyrifera > Fraxinus > Sophora japonica > Photinia serrulata > Pittosporum tobira > Yucca gloriosa > Buxussinica. Chromium content ranks as follows: Acer mono > Populus tomentosa > Populus alba > Prunus ceraifera > Buxussinica > Photinia serrulata > Platanus acerifolia > Sophora japonica > Yucca gloriosa > Sophora japonica > Ligustrum quihoui Carr > Pittosporum tobira > Koelreuteria paniculata > Ligustrum lucidum > Altissima altissima > Fraxinus > Buxus megistophylla. The greening trees can be classified into three categories in term of cadmium and chromium content. The first category includes Populus tomentosa and Acer mono; Prunus ceraiferai, Platanus, Populus alba, Buxussinica and Photinia serrulata belong to the second category; the third category includs Fraxinus, Sophora japonica, Broussonetia papyrifera, Ailanthus altissima, Koelreuteria paniculata, Pittosporum tobira, Yucca gloriosa, Buxus megistophylla, Ligustrum lucidum and Ligustrum quihoui. Heavy metal contents in the leaves of greening trees are markedly different from each other in different function areas, seasons, and tree species.},
doi={10.12691/wjac-3-1A-1}
publisher={Science and Education Publishing}
}