Othman I, al-Oudat M, al-Masri M S
Department of Radiation Protection and Nuclear Safety, Atomic Energy Commission of Syria, Damascus, Syria.
Sci Total Environ. 1997 Nov 14;207(1):43-8. doi: 10.1016/s0048-9697(97)00243-x.
This study concentrates on seasonal variations of lead levels in roadside soils, vegetables and plants of Damascus city. Lead concentrations in soil samples varied from 78.4 ppm to 832 ppm while mean lead levels in plants ranged from 2.6 ppm to 19.3 ppm; the highest levels were found to be in grass (44 ppm). In addition, lead levels were lower in soil samples during the wet period (December to April) whereas, it is higher in plants during the same period. Moreover, traffic density, distance from traffic roads, climate and area topography (up- and down hill) were influencing factors in lead levels in both the soil and plant samples. The results have also shown that lead concentration in most of the analyzed vegetable samples was high and normal washing does not decrease it to an acceptable level.
本研究聚焦于大马士革市路边土壤、蔬菜及植物中铅含量的季节性变化。土壤样本中的铅浓度在78.4 ppm至832 ppm之间变化，而植物中的平均铅含量在2.6 ppm至19.3 ppm之间；最高含量出现在草中（44 ppm）。此外，湿润期（12月至4月）土壤样本中的铅含量较低，而同期植物中的铅含量较高。此外，交通密度、与交通道路的距离、气候和区域地形（上坡和下坡）是影响土壤和植物样本中铅含量的因素。结果还表明，大多数分析的蔬菜样本中的铅浓度较高，常规清洗并不能将其降低到可接受的水平。
