低水平放射性测量技术在大洋多金属结核与结壳研究中的应用

Application of Measuring Technique of Low-level Radioactivity in the Studies of Poly-metallic Nodule and Crust

大洋多金属结核与结壳含有丰富的 Mn、Fe、Cu、Co、Ni等金属元素和稀土元素 ,是极为重要的矿产资源。结核与结壳中富集的长寿命放射性核素记录了自身形成过程和古海洋环境的演化 ,通过测量其中的放射性核素含量可以研究结核与结壳的生长速率、翻转时间及其与环境的关系。由于进行多金属结核与结壳研究测量样品的量较少 ,其中的放射性核素含量很低 ,所以要用低水平放射测量方法完成分析测量工作。本文介绍以上几方面的内容。

Poly metallic nodule and crust are abundant in Mn,Fe,Cu,Co,Ni et al and rare earth elements, and so they are very important minerals resources.The long life radionuclides enriched in them have recorded history that nodule and crust come into being and paleoceanography environment evolution.The growth rate and turnover time and the relation between them and ambience were studied by measuring radionuclides in nodule and crust.The measuring method of low level radioactivity were used because the sample is often very less and the radioactivity is frequently very low.This paper introduces the above contents.