標題: Differences in PM10 concentrations measured by beta-gauge monitor and hi-vol sampler
作者: Chang, CT
Tsai, CJ
Lee, CT
Chang, SY
Cheng, MT
Chein, HM
環境工程研究所
Institute of Environmental Engineering
關鍵字: beta-gauge;water content;PM10;relative humidity
公開日期: 1-Nov-2001
摘要: In this paper. differences between the 24-h average PM10 concentrations of Wedding beta -gauge monitor and Andersen or Wedding hi-vol sampler were studied. When the deliquescent point is not exceeded, PM10 concentrations of the beta -gauge are close to those of the manual samplers. The ratio of beta -gauge PM10 to Andersen PM10 and Wedding PM10 is 1.08 +/-0.06 and 1.09 +/-0.12, respectively. However, when the deliquescent point is exceeded, water absorption by the inorganics of aerosols leads to higher PM10 concentrations of the beta -gauge compared to those of the manual sampler. The ratio of beta -gauge PM10 to Andersen PM10 and Wedding PM10 is 1.21 +/-0.22 and 1.27 +/-0.15, respectively. However., due to evaporation of water from the aerosols collected on the filter tape of the beta -gauge, differences in PM10 concentrations are much less than theoretically calculated. (C) 2001 Elsevier Science Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/S1352-2310(01)00369-7
http://hdl.handle.net/11536/29291
ISSN: 1352-2310
DOI: 10.1016/S1352-2310(01)00369-7
期刊: ATMOSPHERIC ENVIRONMENT
Volume: 35
Issue: 33
起始頁: 5741
結束頁: 5748
Appears in Collections:Articles


Files in This Item:

  1. 000172354900005.pdf