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把矿碴及火电厂的煤灰作为建筑材料使用,是综合治理三废的重要组成部分。这样既经济,又有利于环境保护。但是,一般矿碴及煤灰中均含有天然放射性元素U、Th、K,为了弄清它们的剂量和对居民健康的影响,我们用INAA法测量了十多种有色金属冶炼矿碴、煤灰砖及其它建筑材料中U、Th、K的含量,结果列于表1。同时,我们还分析了标准参考物煤飞灰SRM1633a,分析结果及鉴定值列于表2。
The ballast and coal ash power plant as a building material, is an important part of comprehensive management of waste. This is not only economical, but also conducive to environmental protection. However, the general mineral ballast and coal ash contain natural radioactive elements U, Th, K, in order to clarify their dose and the impact on the health of residents, we measured by INAA method of a dozen non-ferrous metal smelting ballast, coal ash Brick and other building materials U, Th, K content, the results are shown in Table 1. At the same time, we also analyzed the standard reference material fly ash SRM1633a, analysis results and identification values are shown in Table 2.