MEASUREMENT OF AEROSOL ABSORPTION-COEFFICIENT FROM TEFLON FILTERS USING INTEGRATING PLATE AND INTEGRATING SPHERE TECHNIQUES

被引：42
作者：
CAMPBELL, D
COPELAND, S
CAHILL, T
机构：
[1] Crocker Nuclear Laboratory, University of California, Davis, CA
[2] CIRA, Colorado State University Ft, Collins, CO
来源：
AEROSOL SCIENCE AND TECHNOLOGY | 1995年 / 22卷 / 03期
关键词：
D O I：
10.1080/02786829408959747
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Optical transmission of aerosol samples collected on Teflon filters measured by the integrating plate method (IPM) has been used as a means of determining the aerosol absorption coefficient, b(ap), by the Air Quality Group at Crocker Nuclear Lab for over 9 years. The results of an intensive quality assurance program, using an integrating sphere photometer configured for measurement of the transmission of filters, demonstrate that the IPM is highly precise (+/- 1%) and does not suffer from inherent overestimation of particle absorption due to internal scattering, a problem commonly attributed to IPM measurements of aerosols collected on Nuclepore filters. If the appropriate correction is applied when filter loading exceeds a monolayer of particles, b(ap) can be accurately determined by the IPM for aerosol samples collected on Teflon filters.
引用
收藏
页码：287 / 292
页数：6
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