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广义的Rn法测量应包括Rn射气测量和近年来发展起来的α径迹、活性炭吸附、α卡、~(210)Pb和~(210)Po等方法。这是因为所有这些方法的探测信息都包含有Rn。当然有的方法还包含了Rn的子体产物。按测量手段来讲,应属地球物理方法,而就其找矿意义和地质含义来讲,宜归于化探范畴。就Rn法而言,尚存在着下列主要问题没有很好得到解决。 1.地表覆盖层中的Rn源问题及其Rn的释放。 2.Rn在覆盖层中是如何运移的。 3.Rn法的测量结果尚不能进行定量解释。目前关于Rn在覆盖层中的产生与释放及其如何运移的报道,说法纷纭。但实际上在极
The Rn method for generalized measurements should include the measurement of Rn and the a-track, activated carbon adsorption, α-card, ~ (210) Pb and ~ (210) Po methods developed in recent years. This is because the probe information for all of these methods contains Rn. Of course, some methods also include the daughter product of Rn. In terms of measurement means, should be a geophysical method, and in terms of its prospecting significance and geological implications, should be attributed to the field of geochemical exploration. In the case of the Rn Act, the following major issues remain unresolved. 1. Rn source in surface cover and its release of Rn. 2.Rn in the cover is how to migrate. 3.Rn measurement results can not yet be quantitatively explained. The current opinions on the occurrence and release of Rn in the overburden and how they are transported are different. But in fact in the extreme