Title of article
Differences in PM10 concentrations measured by β-gauge monitor and hi-vol sampler
Author/Authors
C. T. Chang، نويسنده , , C. J. Tsai، نويسنده , , R. C. T. Lee، نويسنده , , S. Y. Chang، نويسنده , , M. T. Cheng، نويسنده , , H. M. Chein، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2001
Pages
8
From page
5741
To page
5748
Abstract
In this paper, differences between the 24-h average PM10 concentrations of Wedding β-gauge monitor and Andersen or Wedding hi-vol sampler were studied. When the deliquescent point is not exceeded, PM10 concentrations of the β-gauge are close to those of the manual samplers. The ratio of β-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 β-gauge compared to those of the manual sampler. The ratio of β-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 β-gauge, differences in PM10 concentrations are much less than theoretically calculated.
Keywords
relative humidity , Water content , PM10 , b-gauge
Journal title
Atmospheric Environment
Serial Year
2001
Journal title
Atmospheric Environment
Record number
756750
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