秸秆焚烧期的碳黑气溶胶观测及研究  

Observational Study of Black Carbon Aerosol During Straw-Burning Period

作　　者：伍德侠[1] 魏庆农[1] 魏健琍 刘世胜[1] 冯巍巍[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所环境光学与技术重点实验室,合肥230031 [2]合肥市环境监测中心站,合肥230031

出　　处：《环境科学》2008年第12期3304-3309,共6页Environmental Science

基　　金：国家高技术研究发展计划(863)项目(2005AA641010)

摘　　要：2007年5--6月在合肥市郊3个站点连续实时监测碳黑气溶胶,研究其在秸秆焚烧期的变化特征和来源.正常时期碳黑气溶胶平均质量浓度约为4.85μg/m^3,而秸秆焚烧期其平均浓度约为8.38μg/m^3,这说明秸秆焚烧是碳黑气溶胶的重要来源.同步监测的PM10与BC一致性较好,相关系数为0.74,一般情况下BC约占PM10的4.7%,而秸秆焚烧期BC/PM10的统计平均值较高,约为7.9%.比对2004年秸秆焚烧期BC浓度数据,证实了合肥市在实行农作物秸秆禁烧后,碳黑气溶胶的污染情况有较大好转.Black carbon aerosol （BC） has been measured at three sites in Hefei City during May and June, 2007. Analyzing these real-time BC data, the concentration characters and the sources of black carbon aerosol can be found. The average concentrations of BC in normal period and straw-burning period are 4.85 μg/m^3 and 8.38 μg/m^3 , respectively. The significant difference shows that the straw-burning is one of the main sources. The correlation coefficients between daily average concentration of BC and PM10 is 0.74, while the values of BC/PM10 in normal period and straw-burning period are 4.7 % and 7.9% , respectively. Through comparing to the BC concentration during straw-burning period in 2004 ,the results indicated that pollution of BC has reduced after straw-burning was forbidden by the government.

关 键 词：碳黑气溶胶 秸秆焚烧 可吸入颗粒物(PM10) 变化特征 

分 类 号：X513[环境科学与工程—环境工程]