行道树悬铃木叶片中邻苯二甲酸酯的研究
ASSESSMENT OF PHTHALIC ACID ESTERS IN PLATANUS HISPANICA LEAF AND ITS APPENDICLE
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摘要: 采集上海市杨浦区部分交通道路两侧行道树悬铃木叶片样品,对邻苯二甲酸酯(PAEs)的分布特征进行分析。结果表明,叶片组织和表面附着物中均含有邻苯二甲酸二丁酯(DBP)和邻苯二甲酸二(2-乙基)己酯(DEHP);叶片组织易于吸收主要以气相存在于大气中的DBP,质量面积比范围高于表面附着物8倍以上;而主要存在于大气悬浮颗粒中的DEHP在叶片表面附着物中的质量面积比高于DBP.行道树悬铃木叶片中的PAEs质量面积比与机动车流量有一定的相关性.Abstract: The distribution of phthalic acid esters(PAEs) in Platanus hispanica leaf and its appendicle collected at several streets in Yangpu district, Shanghai city was analyzed. The results show that dibutyl phthalate(DBP) and di(2-ethylhexyl)phthalate(DEHP),were found in both leaf and its appendicle.The Platanus hispanica leaf tended to absorb DBP that more occurred in gas phase with a higher mass/area ratio range than that in appendicle, while DEHP that mainly associated with aerosols in the atmosphere had higher mass/area ratio in appendicle. The mass/area ratios of PAEs in leaf and its appendicle were observed to be positively related to the motor vehicle fluxes of the streets.
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Key words:
- phthalic acid esters /
- Platanus hispanica leaf /
- aerosol
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