Laboratory and Field Measurements of Dry Deposition of Sulfur Dioxide onto Chinese Loess Surfaces

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• 作者：Atsuyuki Sorimachi ; Kazuhiko Sakamoto ; Mio Sakai ; Hidekazu Ishihara ; Tsutomu Fukuyama ; Masahiro Utiyama ; Hongjie Liu ; Wei Wang ; Dagang Tang ; Xuhui Dong ; and Hao Quan
• 刊名：Environmental Science & Technology
• 出版年：2004
• 出版时间：June 15, 2004
• 年：2004
• 卷：38
• 期：12
• 页码：3396 - 3404
• 全文大小：152K
• 年卷期：v.38,no.12(June 15, 2004)
• ISSN：1520-5851

文摘

Laboratory and field measurements were conducted toexamine dry deposition of SO₂ onto Chinese loess surfacesusing native soil sampled in the loess plateau, China.The field tests were employed in Beijing and Lanzhou, China,by directly measuring the dry deposition of SO₂ on soil,which uses soil put on a collector as an SO₂ passive samplingmedium. In the laboratory, a high rate of uptake to SO₂deposition for Chinese soil surfaces due to the highly alkalinitywas found. The uptake of SO₂ deposition was dependenton the pH soil and relative humidity. Furthermore, we evaluatedsome factors that affect the measurement precision:response of SO₂ uptake, repeatability, recovery factor, andvariability associated with the weight and the surfacecoverage on the collectors. As a result, it was shown thatthe measurement precision was primarily related to theratio of the SO₂ deposition amount relative to the sulfurcontent of the original soil. This result was consistent withthe field observations. The laboratory and field resultsindicated an excellent agreement on the SO₂ uptake inherentin the results from the soil surfaces in different regions.