Differences in PM10 concentrations measured by β-gauge monitor and hi-vol sampler

被引：44

作者：

Chang, CT

Tsai, CJ ^{[1
]}

Lee, CT

Chang, SY

Cheng, MT

Chein, HM

机构：

[1] Natl Chiao Tung Univ, Inst Environm Engn, Hsinchu, Taiwan

[2] Natl Cent Univ, Inst Environm Engn, Chungli 32054, Taiwan

[3] Natl Chunghsing Univ, Inst Environm Engn, Taichung 40227, Taiwan

[4] Ind Technol Res Inst, Hsinchu, Taiwan

来源：

ATMOSPHERIC ENVIRONMENT | 2001年 / 35卷 / 33期

关键词：

beta-gauge; water content; PM10; relative humidity;

D O I：

10.1016/S1352-2310(01)00369-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

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.

引用

页码：5741 / 5748

页数：8

共 19 条

[1] Evaporation loss of ammonium nitrate particles during filter sampling [J].