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汞是一种剧毒重金属，其可以通过大气在全球范围内进行传输。当大气中的汞与颗粒物结合时，会形成颗粒结合态汞（PBM）。PBM能够跨区域传输和快速沉降，从而对全球生态系统构成严重威胁。中国的汞排放一直是全球关注的热点，但目前对中国PBM的时空分布、长期趋势和迁移转化规律尚不明确。
Moving water and earth（图）
颗粒形状 河流恢复 海岸侵蚀
2023/6/19
As a river cuts through a landscape, it can operate like a conveyer belt, moving truckloads of sediment over time. Knowing how quickly or slowly this sediment flows can help engineers plan for the dow...
Appalachian Coal Ash Richest in Rare Earth Elements
Appalachian Coal Ash Rare Earth Elements
2016/6/12
A study of the content of rare earth elements in U.S. coal ashes shows that coal mined from the Appalachian Mountains could be the proverbial golden goose for hard-to-find materials critical to clean ...
Rare Earth Oxide-Treated Fullerene and Titania Composites with Enhanced Photocatalytic Activity for the Degradation of Methylene Blue（图）
fullerene yttrium titania visible light methylene blue
2013/10/12
Rare earth oxide-treated fullerene and titania composites (Y-fullerene/TiO2) were prepared by the sol-gel method. The products had interesting surface compositions. X-ray diffraction patterns of the c...