文章对新疆伊犁6家燃煤电厂的原煤、煤渣、煤灰及周围土壤中的天然放射性核素开展测量。结果表明:2家燃煤电厂煤渣、煤灰中天然放射性核素比活度大于1000 Bq/kg,煤渣和煤灰中天然放射性核素富集因子均值分别为1.5~6.3、4.1~16.7。原煤...文章对新疆伊犁6家燃煤电厂的原煤、煤渣、煤灰及周围土壤中的天然放射性核素开展测量。结果表明:2家燃煤电厂煤渣、煤灰中天然放射性核素比活度大于1000 Bq/kg,煤渣和煤灰中天然放射性核素富集因子均值分别为1.5~6.3、4.1~16.7。原煤及周围土壤中的天然放射性核素比活度均处于本底水平。因此,建议对用作建筑材料的煤渣和煤灰进行放射性检测,严格控制高比活度的煤渣和煤灰在建筑材料中的比例。This article conducts a survey on six coal-fired power plants in Ili, Xinjiang, and analyzes and measures natural radioactive nuclides in raw coal, coal slag, coal ash, and surrounding soil. The results showed that the natural radioactive nuclide specific activity in the coal slag and coal ash of two coal-fired power plants was greater than 1000 Bq/kg, and the natural radioactive nuclide specific activity in the raw coal and the surrounding soil was at the standard level. Natural radioactive nuclides exhibit varying degrees of enrichment in coal slag and coal ash, with average enrichment index ranging from 1.5~6.3 and 4.1~16.7, respectively. Therefore, it is recommended that when cinder and coal ash are used as building materials, radioactivity testing is carried out to ensure that the radioactivity level in building materials is lower than the national standard limit.展开更多
文摘文章对新疆伊犁6家燃煤电厂的原煤、煤渣、煤灰及周围土壤中的天然放射性核素开展测量。结果表明:2家燃煤电厂煤渣、煤灰中天然放射性核素比活度大于1000 Bq/kg,煤渣和煤灰中天然放射性核素富集因子均值分别为1.5~6.3、4.1~16.7。原煤及周围土壤中的天然放射性核素比活度均处于本底水平。因此,建议对用作建筑材料的煤渣和煤灰进行放射性检测,严格控制高比活度的煤渣和煤灰在建筑材料中的比例。This article conducts a survey on six coal-fired power plants in Ili, Xinjiang, and analyzes and measures natural radioactive nuclides in raw coal, coal slag, coal ash, and surrounding soil. The results showed that the natural radioactive nuclide specific activity in the coal slag and coal ash of two coal-fired power plants was greater than 1000 Bq/kg, and the natural radioactive nuclide specific activity in the raw coal and the surrounding soil was at the standard level. Natural radioactive nuclides exhibit varying degrees of enrichment in coal slag and coal ash, with average enrichment index ranging from 1.5~6.3 and 4.1~16.7, respectively. Therefore, it is recommended that when cinder and coal ash are used as building materials, radioactivity testing is carried out to ensure that the radioactivity level in building materials is lower than the national standard limit.
