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采用自行设计的试验装置,通过室内淋洗模拟试验分析雨水中7Be质量活度、土壤吸附7Be质量活度及渗漏液中7Be质量活度,对7Be示踪坡面土壤侵蚀的可行性进行研究.试验结果表明雨水中的7Be有73.3%被土壤吸附,只有17.3%进入渗漏液.因此,通过降雨到达地表的7Be主要被土壤吸附,可以用于示踪土壤侵蚀研究.
The feasibility of 7Be tracing slope soil erosion was studied by using a self-designed test rig to analyze 7Be mass activity in rainwater, 7Be mass activity in soil water and 7Be mass activity in leachate through indoor leaching simulation test The test results show that 73.3% of 7Be in the rain water is adsorbed by the soil, and only 17.3% of it enters the leachate, so 7Be, which reaches the surface by rainfall, is mainly adsorbed by the soil and can be used for tracing soil erosion research.