Continuous measurement of particulate and sulfur dioxide concentrations in Junk Bay,Hong Kong |
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| Institution: | 1. School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China;2. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong SAR 999077, China;3. Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong SAR 999077, China;4. Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China;1. Air Quality Studies, Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong;2. Air Group, Hong Kong Environmental Protection Department, Hong Kong |
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| Abstract: | As part of an environmental impact assessment for building a new town in Junk Bay, continuous measurement of SO2 and particulate concentrations was carried out from October 1981 to June 1982 at three sites in Junk Bay to study the air quality in the area. Flame photometric SO2 analyzers were used to measure ambient SO2 level, whereas tape monitors were used to measure the ambient suspended particulate level (in terms of soiling index, or coefficient of haze per 1000 feet). It was found that the mean SO2 concentrations at the three monitoring sites ranged from 5μg m−3 to 35μg m−3. Maximum daily values up to about 250 μg m−3 and hourly values up to 800 μg m −3 had been recorded on occasion. Comparison of the hourly meteorological data and the hourly SO2 concentrations in four high-SO2-level days suggested that the ‘sulfur dioxide episodes’ were all associated with very light wind speeds and local sources. The mean coefficient of haze level in Junk Bay was less than one, which corresponded to very slight particulate pollution. |
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