De Nicola F, Maisto G, Prati M V, Alfani A
Università degli Studi del Sannio, via Port'Arsa 11, 82100 Benevento, Italy.
Environ Pollut. 2008 May;153(2):376-83. doi: 10.1016/j.envpol.2007.08.008. Epub 2007 Sep 24.
Quercus ilex L. leaves were collected four times in one year at six urban sites and one remote area in order to determine trace element and PAH accumulation through concomitant analyses of unwashed and water-washed leaves. Both unwashed and washed leaves showed the highest amounts of trace elements and PAHs in the urban area. Unwashed leaves showed greater differences between urban and remote areas and among the urban sites than washed leaves for trace element and PAH concentrations. Water-washing resulted in a significant (P<0.001) decrease in leaf concentrations of Cr, Cu, Fe, Pb, V and Zn. By contrast, Cd and total PAH concentrations showed no differences between unwashed and washed leaves.
为了通过对未清洗和水洗叶片的同步分析来确定微量元素和多环芳烃的积累情况，一年内在六个城市地点和一个偏远地区对冬青栎的叶片进行了四次采集。未清洗和清洗后的叶片在城市地区的微量元素和多环芳烃含量均最高。对于微量元素和多环芳烃浓度，未清洗叶片在城市和偏远地区之间以及城市各地点之间的差异比清洗后的叶片更大。水洗导致叶片中铬、铜、铁、铅、钒和锌的浓度显著降低（P<0.001）。相比之下，镉和总多环芳烃浓度在未清洗和清洗后的叶片之间没有差异。
