PB-210 DATING BY LOW BACKGROUND GAMMA-COUNTING
PB-210 DATING BY LOW BACKGROUND GAMMA-COUNTING
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DOI：
10.1007/bf00026640
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发表时间：
1986-12-19
期刊：
影响因子：
2.6
通讯作者：
BATTARBEE, RW
中科院分区：
文献类型：
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作者：
APPLEBY, PG;NOLAN, PJ;BATTARBEE, RW
通过直接伽马测定法测量铅-210和镭-226，现在可以提供湖泊沉积物中浓度变化的记录，其可靠性和精确度足以为年龄/深度和干沉积速率计算提供适当的依据。在非破坏性样品制备和同时测定其他环境重要的γ发射放射性同位素（例如137 Cs和241 Am）方面有额外的好处。结果L。弗利特，S. W.苏格兰说明了这种方法的价值，特别是在湖泊与干扰流域的可变输入的Pb 210 Pb发生。
Lead-210 and radium-226 measurements by direct gamma assay can now provide a record of changing concentrations in lake sediments sufficiently reliable and precise to form a suitable basis for age/depth and dry-sedimentation-rate calculations. There are additional benefits in terms of non destructive sample preparation and simultaneous assay for other environmentally significant gamma-emitting radioisotopes (e.g.137Cs and241Am). Results from L. Fleet, S. W. Scotland illustrate the value of this approach especially in lakes with disturbed catchments where variable input of supported210Pb has occurred.