摘要
对采自云南省个旧地区的 10 0件土壤样品进行室内多道伽马能谱分析后发现 ,该地区土壤的铀镭平衡系数为 0 .6 5 ,表现出贫镭偏铀的特征。铀镭的不平衡导致地面或航空伽马能谱测量中铀道数据与实际情况有很大的误差 。
Measurements of U and Ra in 100 soil samples collected from Gejiu area in Yunnan Province show that the Ra/U equilibrium ratio is 0.65,implying that U is richer than Ra.Some indications of regional disequilibrium have also been found.The spreading equilibrium ratio values indicate that disequilibrium may cause errors in U channel data obtained by ground gamma-ray surveying. Neverthelsss,these data can be improved to some extent by equilibrium ratio correction.
出处
《物探与化探》
CAS
CSCD
2002年第3期207-208,共2页
Geophysical and Geochemical Exploration
基金
国家计委科研基金 (计司国地 1997 45 )
原地质矿产部科研基金 (地发 1997 2 5 3)资助
关键词
土壤
铀系
伽马能谱
soils
uranium-series
gamma-ray
