期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 41, 期 11, 页码 3940-3944出版社
AMER CHEMICAL SOC
DOI: 10.1021/es062468t
关键词
-
Np(V) surface speciation on hematite surfaces at pH 7-9 under pCO(2) = 10(-3.45) atm was investigated using X-ray absorption spectroscopy (XAS). In situ XAS analyses suggest that bis-carbonato inner-sphere and tris-carbonato outer-sphere ternary surface species coexist at the hematite-water interface at pH 7-8.8, and the fraction of outer-sphere species gradually increases from 27 to 54% with increasing pH from 7 to 8.8. The results suggest that the heretofore unknown Np(V)-carbonato ternary surface species may be important in predicting the fate and transport of Np(V) in the subsurface environment down gradient of high-level nuclear waste respositories.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据