摘要
2003年7月、8月以及11月至2004年1月,在北京大学物理楼顶(北纬39 99°,东经116 31°)使用两台黑碳仪(Aethalometer)和一台TEOM1400a(TaperedElementOscillatingMicrobalance)来观测气溶胶.得到夏季黑碳的平均浓度为8 800μg·m-3,冬季为11 400μg·m-3.在冬季的观测中,在一台黑碳仪的进气口加上不同的切割头,分别得到了全部气溶胶(TSP)、PM10以及PM2 5中的黑碳质量浓度.结果表明,北京冬季的气溶胶中,90%的黑碳存在于PM10中,82 6%的黑碳存在于PM2 5中.比较PM10的浓度和PM10中黑碳的浓度可以看出,PM10中黑碳质量平均占5 11%.
The aerosol properties were measured with an aethalometer and a TEOM1400a (Tapered Element Oscillating Microbalance) at the roof of physics building of Perking University (39.99°N,116.31°E) from July to Aug. 2003 and from Nov. 2003 through Jan. 2004.The average BC mass concentrations in summer and winter were 8.80 μg·m^(-3) and 11.4 μg·m^(-3),respectively. During winter two different incision implement of cyclone were installed at the inlet of an aethalometer. BC mass concentration in TSP、PM_(10) and PM_(2.5) were obtained. The results indicated that 90% of BC existed in PM_(10) and 82.6% of BC existed in PM_(2.5) in the winter aerosol. BC in PM_(10) accounted for 5.11% of the PM_(10) mass .
出处
《环境科学学报》
CAS
CSCD
北大核心
2005年第1期17-22,共6页
Acta Scientiae Circumstantiae
基金
国家重点基础研究发展规划(G1999045700)
