IDENTIFICATION OF SECONDARY ORGANIC AEROSOL EPISODES AND QUANTITATION OF PRIMARY AND SECONDARY ORGANIC AEROSOL CONCENTRATIONS DURING SCAQS
IDENTIFICATION OF SECONDARY ORGANIC AEROSOL EPISODES AND QUANTITATION OF PRIMARY AND SECONDARY ORGANIC AEROSOL CONCENTRATIONS DURING SCAQS
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DOI：
10.1016/1352-2310(94)00276-q
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发表时间：
1995-12-01
影响因子：
5
通讯作者：
HUNTZICKER, JJ
中科院分区：
文献类型：
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作者：
TURPIN, BJ;HUNTZICKER, JJ
使用1987年南加州空气质量研究的两小时平均有机碳和元素碳浓度，以了解有机气溶胶形成的动力学，并量化二次有机气溶胶浓度。在夏季研究期间，发生了五次有机气溶胶形成。在这些期间，克莱蒙特的次生有机气溶胶通常在太平洋夏令时1600到1800之间达到峰值，这个峰值通常在臭氧峰值之后1-2小时。除下午的几个小时外，主要是有机气溶胶。然而，在这些下午的时间里，多达80%的有机气溶胶是次要的。有几天观测到的二次有机气溶胶浓度高达14mgcm(-3)。有趣的是，次生有机气溶胶的最高浓度出现在星期六。
Two-hour average organic and elemental carbon concentrations from the 1987 Southern California Air Quality Study were used to gain an understanding of the dynamics of organic aerosol formation and to quantify secondary organic aerosol concentrations. Five episodes of secondary organic aerosol formation occurred during the summer study. During these periods secondary organic aerosol at Claremont typically peaked between 1600 and 1800 Pacific Daylight Time, and this peak was often 1-2 h after the ozone peak. Primary organic aerosol dominated with the exception of several hours in the afternoon. However, during these afternoon periods as much as 80% of the organic aerosol was secondary. Concentrations of secondary organic aerosol as high as 14 mu gCm(-3) were observed on some days. Interestingly, the highest concentrations of secondary organic aerosol occurred on Saturdays.