论文部分内容阅读
α径迹找矿在全国已经普遍推广。现在,排除干扰因素已经提到议事日程。一般情况下,地表土壤中钍含量极微。但在有钍局部富集的地区,钍元素的干扰相当明显。因为在火成岩的风化土壤中,钍含量较高(根据一些资料报道,Th/U比值,在酸性岩中为3.5,在基性岩中为4,在超基性岩中为3-4)。下面仅就排除钍的干扰问题提出一些看法。一、关于钍的干扰让我们从一个实验来看钍的干扰程度。在铀含量为1.27%和钍含量为1.03%的两种矿样
Alpha track prospecting in the country has been widely promoted. Nowadays, the interference factor has been mentioned on the agenda. Under normal circumstances, the surface soil thorium content is minimal. However, thorium in the local enrichment of thorium elements quite obvious. Because of the higher Th content in weathered soils of igneous rocks (Th / U ratios reported from some sources, 3.5 in acid rocks, 4 in base rocks and 3-4 in ultrabasic rocks). The following only to exclude the interference of thorium put forward some views. First, the interference on thorium Let us from an experimental point of view thorium interference. In the uranium content of 1.27% and thorium content of 1.03% of the two mineral samples