九龙江口沉积物中^(210)Pb,^(226)Ra,Th和总β放射性的分布特征  

A STUDY ON DISTRIBUTIONS OF ^(210)Pb, ^(226)Ra, Th AND TOTAL β IN THE SEDIMENTS IN THE JIULONG RIVER ESTUARY

作　　者：陈进兴[1] 

机构地区：[1]国家海洋局第三海洋研究所

出　　处：《同位素》1991年第1期25-29,共5页Journal of Isotopes

摘　　要：在九龙江口的沉积物中,这些放射性物质的水平分布具有以下特征:^(210)Pb,Th和总β的含量是随离九龙江口距离的增加基本呈直线上升;^(226)Ra的含量是随离江口距离的增加呈直线下降。从它们的不同分布可以推断它们的不同来源。The paper reports the distributions of ^(210)Pb, ^(226)Ra, Th and total β in the sedimcnts in Jiulong River Estuary. The horizontal distributions of ^(210)Pb, Th and total β increased,but ^(226)Ra decreased, with the distances off the Jiulong River Estuary, showing that the sources of ^(210)Pb, Th and total β Jiulong River Estuary came from marine, but ^(226)Ra from land.

关 键 词：沉积物 放射性 分布 ^210PB ^226RA 

分 类 号：P736.45[天文地球—海洋地质]