摘要
目的探讨降低块状高氟石煤燃烧时对室内空气污染的方法。方法将钙基固氟剂包裹于块状石煤的表面，干燥后供实验组燃用，对照组燃用原煤。连续3年（2002-2004年）采样分析两组的煤和煤渣含氟量及室内空气氟和SO2水平。结果使用石煤包裹固氟技术后，3年中室内空气氟下降率分别达到79．00％、83．83％、74．81％。两组连续3年室内空气氟差异有统计学意义（P〈0．01）。2002、2004年实验组氟释放率降至15．19％和26．10％．与对照组比较下降了71．38％和51．16％；固氟率达到84.81％和73．90％，固氟效果显著（P〈0．05或〈0．01）：室内空气SO2下降率达到74．93％和87．43％（P〈0．01），与室内空气氟的下降幅度大致相当。结论石煤包裹固氟技术能有效降低块状石煤燃烧时对室内空气造成的氟、硫污染。
Objective To study measures of decrease indoor-air fluoride level during fluoride-rich stone coal combustion. Methods In the years of 2002, 2003 and 2004, the farmer＇s household using stone coal blocks coating with calcium-based absorbents was categorized into de-fluoride group, while control group used normal stone coal. Huoride contents in stone coal and ash and indoor-air fluoride and SO2 concentration were analyzed. Results Indoor-air fluoride declined in de-fluoride group by 79.00%, 83.83% and 74.81%, respectively in the consecutive three years, with significant difference （P 〈 0.01 ） when compared to the control group. Fluoride release declined to 15.19% and 26.10% in the year of 2002 and 2004, which was 71.38% and 51.16% lower than that in control group, respectively. 84.81% and 73.90% of fluoride had been retained, indicating that fluoride retention effect was remarkable （P 〈 0.05 or 〈 0.01 ）. Indoor-air SO2 decreased by 74.93% and 87.43% （P 〈 0.0l） in the de-fluoride group, at a declining level equivalent to indoor-air fluoride on the whole. Conclusions The technique of coating stone coal with calcium-based absorbents effectively reduces fluoride and sulfur pollution of indoor-air during stone coal combustion.
出处
《中国地方病学杂志》
CAS
CSCD
北大核心
2007年第2期214-216,共3页
Chinese Jouranl of Endemiology
基金
陕西省地方病防治办公室资助项目（2002-26）：国家“十五”攻关课题资助项目（2001BA7048031
关键词
氟化物中毒
煤
二氧化硫
空气污染
室内
Fluoride poisoning
Coal
Sulfur dioxide
Air pollution, indoor
