DESORPTION OF BA AND RA-226 FROM RIVER-BORNE SEDIMENTS IN THE HUDSON ESTUARY

被引：187

作者：

LI, YH ^{[1
]}

CHAN, LH ^{[1
]}

机构：

[1] LOUISIANA STATE UNIV,DEPT GEOL,BATON ROUGE,LA 70803

来源：

EARTH AND PLANETARY SCIENCE LETTERS | 1979年 / 43卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0012-821X(79)90089-X

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The pronounced desorption of Ba and 226Ra from river-borne sediments in the Hudson estuary can be explained quantitatively by the drastic decrease in the distribution coefficients of both elements from a fresh to a salty water medium. The desorption in estuaries can augment, at least, the total global river fluxes of dissolved Ba and 226Ra by one and nine times, respectively. The desorptive flux of 226Ra from estuaries accounts for 17-43% of the total 226Ra flux from coastal sediments. Two mass balance models depicting mixing and adsorption-desorption processes in estuaries are discussed. © 1979.

引用

页码：343 / 350

页数：8