【摘要】 本文研究了我国主要原煤、煤渣及飞灰中天然放射性核素 2 38U、2 32 Th、2 2 6 Ra、2 1 0 Pb和 2 1 0 Po的比活度水平 ,分析了燃煤产生的飞灰中上述核素与原煤相比的浓集倍数 ,评价了上海燃煤电厂释放飞灰对环境和公众的影响 ,强调了提高除尘效率的重要性。更多还原

【Abstract】 Specific activities of natural radionuclides such as 238 U、 232 Th、 226 Ra、 210 Pb and 210 Po were assessed in coal,coal slag and fly ash in China. This paper analysed the concentration factors of these nuclides in fly ash in relation to those in coal. The impacts of fly ash released from coal fired power plants in Shanghai on the environment and the public were evaluated,with emphasis on improving dust collection efficiency.更多还原