Multitracer Study on Removal Mechanisms of Metal Elements from Seawater
Multitracer Study on Removal Mechanisms of Metal Elements from Seawater
复制标题
海水中金属元素去除机制的多示踪剂研究
DOI：
10.2116/analsci.12.1
复制
发表时间：
1996
影响因子：
1.6
通讯作者：
F. Ambe
中科院分区：
文献类型：
--
作者：
S. Chen;S. Ambe;N. Takematsu;F. Ambe
利用RIKEN环形回旋加速器产生的放射性多示踪剂，研究了人工海水中水合氧化铁、海洋沉积物（深海和近岸沉积物）和粘土矿物（蒙脱石和高岭石）对金属元素的吸附。测定了Mg、Sc、V、Mn、Fe、Co、Ni、Zn、Ga、As、Se、Rb、Sr、Y、Zr、Nb、Mo、Tc、Ru、Rh、Pd、Ag、In、Sn、Eu、Gd、Tb、Tm、Yb、Lu、Hf、Re和Hg的吸附系数。各元素的Kads值大小顺序为：水合氧化铁>深海沉积物>蒙脱石/近岸沉积物/高岭石。log K _ads与海洋平均停留时间的对数之间的关系表明，海洋颗粒物对金属元素的吸附在其从海水中的去除中起着重要的作用。
Using radioactive multitracers produced by RIKEN Ring Cyclotron, the adsorption of metal elements on hydrated ferric oxide, marine sediments (deep-sea and near-shore sediments) and clay minerals (montmorillonite and kaolinite) from artificial seawater was studied. The adsorption coefficients ( K _ads) of Mg, Sc, V, Mn, Fe, Co, Ni, Zn, Ga, As, Se, Rb, Sr, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, In, Sn, Eu, Gd, Tb, Tm, Yb, Lu, Hf, Re and Hg were determined. The order of K _ads for each element can be summarized as follows: hydrated ferric oxide>deep-sea sediment>montmorillonite/near-shore sediment/kaolinite. The observed relationships between log K _ads and the logarithm of the mean oceanic residence time indicate that adsorption of metal elements on marine particulate materials plays an important role in their removal from seawater.