Comparison of Sr-Nd-Pb isotopes in insoluble dust between northwestern China and high-latitude regions in the Northern Hemisphere
作者： Zhiheng Du , Cunde Xiao , Tingfeng Dou , Shutong Li , Hongmin An
DOI: 10.1016/J.ATMOSENV.2019.116837
关键词: Sea ice 、 Arctic 、 Snow 、 Strontium 、 Northern Hemisphere 、 Isotope 、 Physical geography 、 Environmental science 、 Latitude 、 Lead (sea ice)
摘要: Abstract To determine the potential sources of dust at high latitudes in Northern Hemisphere, this study measured stable isotopic ratios strontium (Sr), neodymium (Nd) and lead (Pb) insoluble snow samples (as well as soil sand samples) from sites northwestern China Hemisphere: Altay (Xinjiang, China), Ny-Alesund (Svalbard), Barrow (Alaska) Arctic Ocean. The combined plots Sr–Nd–Pb data demonstrate that there are distinctive geographic patterns among different sampling sites. Sr–Nd results (Xinjiang) (Svalbard) display overall crust-like patterns, indicating local mineral represent a significant contribution. 87Sr/86Sr eNd(0) sea ice Ocean suggest long-range transport to region. Our indicate Russia may be source anthropogenic pollutants for region, while North America Barrow, Alaska. These findings beneficial protecting environment global scale.
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