Comparability between PM2.5 and particle light scattering measurements
Comparability between PM2.5 and particle light scattering measurements
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DOI：
10.1023/a:1020047307117
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发表时间：
2002-10-01
影响因子：
3
通讯作者：
Richards, LW
中科院分区：
文献类型：
--
作者：
Chow, JC;Watson, JG;Richards, LW
调查了过去十年空气质量研究中的颗粒光散射和PM2.5(空气动力学直径小于2.5微米的颗粒)浓度数据。细颗粒散射效率是根据测量的光散射与细质量浓度和粗质量浓度之间的统计关系确定的。由此产生的细颗粒散射效率从大峡谷Meadview的1.7 m(2)g(-1)到墨西哥城的5 m(2)g(-1)。大部分得到的精细散射效率集中在2m(2)g(-1)左右，这比以前报道的大多数值都要低得多。
Particle light scattering and PM2.5 (particles with aerodynamic diameters less than 2.5 mum) concentration data from air quality studies conducted over the past ten years were examined. Fine particle scattering efficiencies were determined from statistical relationships among measured light scattering and fine and coarse mass concentrations. The resulting fine particle scattering efficiencies ranged from 1.7 m(2) g(-1) at Meadview in the Grand Canyon to over 5 m(2) g(-1) in Mexico City. Most of the derived fine scattering efficiencies were centered around 2 m(2) g(-1), which is considerably lower than most values reported from previous studies.