【摘要】 2008年7～8月在北京市奥体中心的遥感所站点连续实时监测碳黑气溶胶（BC）,研究其在北京奥运期间的变化特征和来源。奥运会前BC平均质量浓度约为4.58μg/m³,而奥运会期间其平均浓度约为3.07μg/m³,下降比约为33.0%,这说明减排措施有效降低了BC的排放总量。同步监测的可吸入颗粒物(PM₁₀)与BC一致性较好,相关系数为0.86,BC约占PM₁₀的1.9%。比对2007年同期BC浓度数据,也证实了北京地区在实行各项减排措施后,BC的污染情况有较大好转。更多还原

【Abstract】 Black carbon aerosol（BC） has been measured at IRSA site in Beijing during July and August, 2008.By analyzing these real-time BC data,the concentration distributions and the sources of BC are concluded.The average concentrations of BC in July and Beijing Olympic Games are 4.58μg/m³ and 3.07μg/m³ respectively,that the declining ratio is about 33.0%.It shows that a series of regulations successfully decreased the concentration of BC.The correlation coefficient between daily average concentration of BC and inhalable particles(PM₁₀) is 0.86,while the value of BC/PMt0 is 1.9%.Through comparing with the BC concentration of summer in 2007,the results indicated that the concentration of BC has reduced during Beijing Olympic Games.更多还原