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Determination and Evaluation of Sampling Velocity in a Simple Passive Sampling Method to Monitor HNO3(g) in Ambient Air |
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| Authors: | Masahide Aikawa Yoshinori Nishikawa Makiko Yamagami Takatoshi Hiraki Kentaro Murano Hitoshi Mukai |
| Institution: | 1. Hyogo Prefectural Institute of Environmental Sciences, 3-1-27 Yukihira-cho, Suma-ku, Kobe, Hyogo, 654-0037, Japan 2. Research Institute of Environment, Agriculture and Fisheries, Osaka Prefectural Government, Osaka, Japan 3. Nagoya City Institute for Environmental Sciences, Nagoya, Japan 4. Hosei University, Tokyo, Japan 5. National Institute for Environmental Studies, Tsukuba, Japan |
| Abstract: | We evaluated the applicability of a simple passive sampling method to quantify HNO3(g) in ambient air. The method has the advantages of not only ease of operation but also low cost. A sampling velocity of 214 m day?1 was determined based on the concentration of HNO3(g) measured by the four-stage filter-pack method at nine sites located within a 250?×?250-km area in Japan. This sampling velocity was applied at sites located outside of area to verify the applicability and accuracy of the simple passive sampling method. The variation in the results for the application of the sampling velocity ranged from 0.39 to 0.95. The simple passive sampling method should be applied to sites with different meteorological conditions, and the obtained data should be used to obtain more significant information and/or to indicate the need for further developments in the methodology. |
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