文档介绍：第3卷 第5期
334 中国科技论文在线 SCIENCEPAPER ONLINE 2008 年 5 月
n of trace elements occurred, similar as that of PM10. It was presumed that the
enrichment of trace elements in submicron mode should be controlled by heterogeneous chemical reaction, while the
enrichment in supermicron mode by either chemical reaction or heterogeneous coagulation. According to the
relative enrichment factors calculated, all studied elements showed enrichment trend in submicron mode except that
Mn showed exhaustion trend in PM10. Since the removal efficiency of ESP is low in the particulate size range of
基金项目：国家重点基础研究发展规划(973)项目(2002CB211601)
作者简介：李超(1982－)，男，硕士研究生
通信联系人：段雷，副教授，******@ 第5期
中国科技论文在线 SCIENCEPAPER ONLINE
2008 年 5 月 335
-1 μm, the removal efficiency of most trace elements is lower than that of particulate in PM1, , and PM10.
Although the emission factors of trace elements varied much after ESP, the total emission of trace elements may be
large and the environmental impacts should be much concerned.
Key words: environmental science；emission characteristics；trace element；PM10；coal-fired power plant；
enrichment；particle size distribution；emission factor