新疆部分燃煤和电厂粉煤灰中天然放射性水平分析

The Natural Radioactive Level of the Coal,Coal Cinder and Slag from Power Plants

采用低本底γ能谱仪对乌鲁木齐、伊犁和哈密地区的煤以及华电厂和国电厂的粉煤灰中的天然放射性核素含量进行了测量。测量结果:226Ra、232Th、40K含量按样品个数的加权平均值,乌鲁木齐煤为5.54、3.51、69.15 Bq/kg;伊犁煤为9.59、4.02、72.95 Bq/kg;哈密煤为7.42、4.87、88.32 Bq/kg;华电厂粉煤灰中为29.31、15.57、111.39 Bq/kg;国电厂粉煤灰中为24.67、16.22、133.98 Bq/kg。并依据国家标准对粉煤灰进行分类,结果表明,粉煤灰的使用不受限制。

The-ray spectrometer was used to analyze the natural radioactive level of the coal from Urumqi,Yi li and Ha mi areas;coal cinder and slag from China power plant and state power plant in Urumqi.The average value of 、、and of coal is 5.54、3.51、69.15 from Urumqi;9.59、4.02、72.95 from Yi li;7.42、4.87、88.32 from Ha mi;the coal cinder is 29.31、15.57、111.39 from China power plant;24.67、16.22、133.98 from state power plant,respectively.The result reveals that the coal cinder＇s application range has no limit according to national standard.