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~(210)pb方法是测定近百年地质年龄的同位素年代学方法。近些年来,~(210)pb方法在测定湖相、陆坡和陆架、港湾和河口的沉积速度,测定冰雪年龄,研究现代沉积作用和表面微层海水中富集~(210)pb的现象,讨论近百年环境污染历史等方面显示出越来越重要的作用,获得了不少很有价值的研究成果。~(210)pb方法测定地质年龄,可以通过测试它衰变的子体~(210)pb的α放射性来完成,也可以通过~(210)Bi的β测试来实现。本文确定的实验流程是应用~(208)Po。示踪剂,通过测试样品中~(210)Po
The ~ (210) pb method is an isotopic chronological method for the determination of geologic ages over the past century. In recent years, the ~ (210) pb method has been used to determine the deposition rate of lacustrine, continental slope, continental shelf, estuary and estuary, to determine the age of ice and snow, to study the modern sedimentation and the enrichment of ~ (210) pb in surface micro- Discussing the history of environmental pollution in the recent one hundred years and so on, showing more and more important roles and gaining a lot of valuable research results. The ~ (210) pb method for the determination of geologic age can be performed by testing the alpha radioactivity of its decayed daughter, 210bpb, or by the Beta test of ~ (210) Bi. The experimental procedure determined in this paper is using ~ (208) Po. Tracer, through the test sample ~ (210) Po