Kowalski Artur, Frankowski Marcin
Department of Water and Soil Analysis, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614, Poznań, Poland.
Environ Sci Pollut Res Int. 2016 May;23(10):9614-24. doi: 10.1007/s11356-016-6179-2. Epub 2016 Feb 4.
In this paper, we present the results of mercury concentration in soils, buds and leaves of maple (Acer platanoides-Ap) and linden (Tilia platyphyllos-Tp) collected in four periods of the growing season of trees, i.e. in April (IV), June (VI), August (VIII) and November (IX) in 2013, from the area of Poznań city (Poland). The highest average concentration of mercury for 88 samples was determined in soils and it equaled 65.8 ± 41.7 ng g(-1) (range 14.5-238.9 ng g(-1)); lower average concentration was found in Ap samples (n = 66): 55.4 ± 18.1 ng g(-1) (range 26.5-106.9 ng g(-1)); in Tp samples 50.4 ± 15.8 ng g(-1) (range 23.1-88.7 ng g(-1)) and in 22 samples of Tp buds 40.8 ± 22.7 ng g(-1) (range 12.4-98.7 ng g(-1)) and Ap buds 28.2 ± 13.6 ng g(-1) (range 8.0-59.5 ng g(-1)). Based on the obtained results, it was observed that the highest concentration of mercury in soils occurred in the centre of Poznań city (95.5 ± 39.1 ng g(-1)), and it was two times higher than the concentration of mercury in other parts of the city. Similar dependencies were not observed for the leaf samples of Ap and Tp. It was found that mercury concentrations in the soil and leaves of maple and linden were different depending on the period of the growing season (April to November). Mercury content in the examined samples was higher in the first two research periods (April IV, June VI), and then, in the following periods, the accumulation of mercury decreased both in soil and leaf samples of the two tree species. There was no correlation found between mercury concentration in leaves and mercury concentration in soils during the four research periods (April-November). When considering the transfer coefficient, it was observed that the main source of mercury in leaves is the mercury coming from the atmosphere.
在本文中，我们展示了2013年树木生长季节四个时期（即4月（IV）、6月（VI）、8月（VIII）和11月（IX））从波兰波兹南地区采集的枫香（Acer platanoides - Ap）和椴树（Tilia platyphyllos - Tp）土壤、芽和叶片中的汞浓度结果。88个土壤样本中汞的平均浓度最高，为65.8±41.7 ng g⁻¹（范围14.5 - 238.9 ng g⁻¹）；Ap样本（n = 66）中的平均浓度较低：55.4±18.1 ng g⁻¹（范围26.5 - 106.9 ng g⁻¹）；Tp样本为50.4±15.8 ng g⁻¹（范围23.1 - 88.7 ng g⁻¹），22个Tp芽样本为40.8±22.7 ng g⁻¹（范围12.4 - 98.7 ng g⁻¹），Ap芽样本为28.2±13.6 ng g⁻¹（范围8.0 - 59.5 ng g⁻¹）。根据所得结果观察到，波兹南市中心土壤中的汞浓度最高（95.5±39.1 ng g⁻¹），比城市其他地区的汞浓度高出两倍。在Ap和Tp的叶片样本中未观察到类似的相关性。发现枫香和椴树土壤和叶片中的汞浓度因生长季节（4月至11月）而异。在前两个研究时期（4月IV、6月VI），所检测样本中的汞含量较高，然后在随后的时期，两种树种的土壤和叶片样本中汞的积累量均下降。在四个研究时期（4月 - 11月），叶片中的汞浓度与土壤中的汞浓度之间未发现相关性。在考虑转移系数时，观察到叶片中汞的主要来源是来自大气的汞。
