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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
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...