Ocean to continent transfer of atmospheric Se as revealed by epiphytic lichens.
Ocean to continent transfer of atmospheric Se as revealed by epiphytic lichens.
复制标题
DOI：
10.1016/j.envpol.2009.04.021
复制
发表时间：
2009-10
影响因子：
8.9
通讯作者：
Hanjie Wen;J. Carignan
中科院分区：
文献类型：
--
作者：
Hanjie Wen;J. Carignan
关于自然排放和人为硒在区域和地方尺度上的相对贡献仍然存在长期的争论。本文报道了从美国、加拿大和法国沿海和内陆地区采集的附生地衣中硒和重金属的含量，以评估大气硒的来源。地衣中硒和氯之间的相关性证实了大气硒的主要海洋生物源。大陆样品没有显示硒和其他金属（铅，铜，在.）含量之间的系统关系，即使是在附近的冶炼厂或靠近城市地区收集的地衣。我们的研究结果表明，虽然人为硒可能存在，海洋生物硒源是一个主要的贡献者大气硒为我们的采样位置。自然排放的大气硒的贡献可能是显着的，在城市和工业区，应考虑到进一步的研究。
There is still a long-term debate concerning the relative contributions of naturally emitted and anthropogenic Se at the regional and local scales. Here, Se and heavy metal concentrations are reported for epiphytic lichens collected in coastal and inland areas from the USA, Canada and France for assessing atmospheric Se source. Correlations found between Se and Cl in lichens confirmed the major marine biogenic source for atmospheric Se. Continental samples do not show systematic relationships between Se and other metal (Pb, Cu, In …) contents, even for lichens collected in the vicinity of smelters or close to urban areas. Our results suggest that, although anthropogenic Se may be present, the marine biogenic Se source is a major contributor to atmospheric Se for our sampling locations. The contribution of naturally emitted atmospheric Se may be significant in urban and industrial areas and should be taken into account for further studies.