| 秸秆焚烧期的碳黑气溶胶观测及研究 |
| 摘要点击 3022 全文点击 2279 投稿时间：2007-11-29 修订日期：2008-04-07 |
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| 中文关键词 碳黑气溶胶 秸秆焚烧 可吸入颗粒物(PM10) 变化特征 |
| 英文关键词 black carbon aerosol(BC) straw-burning inhalable particles(PM10 ) concentration characters |
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| 中文摘要 |
| 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4.85 μg/m3，而秸秆焚烧期其平均浓度约为 8.38 μg/m3，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. |
| 英文摘要 |
| 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/m3 and 8.38 μg/m3, 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. |
