Khan Azmatullah, Kim Ki-Hyun, Szulejko Jan E, Brown Richard J C, Jeon Eui-Chan, Oh Jong-Min, Shin Yong Soon, Adelodun Adedeji A
a Department of Civil and Environmental Engineering , Hanyang University , Seoul , Korea.
b Environment Division , National Physical Laboratory, Teddington , Middlesex , United Kingdom.
J Air Waste Manag Assoc. 2017 Aug;67(8):923-932. doi: 10.1080/10962247.2017.1305009. Epub 2017 Apr 7.
Atmospheric concentration of sulfur dioxide (SO) was intermittently measured at an air quality monitoring (AQM) station in the Yong-san district of Seoul, Korea, between 1987 and 2013. The SO level was compared with other important pollutants concurrently measured, including methane (CH), carbon monoxide (CO), nitric oxide (NO), nitrogen dioxide (NO), ozone (O), and particulate matter (PM). If split into three different periods (period 1, 1987-1988, period 2, 1999-2000, and period 3, 2004-2013), the respective mean [SO] values (6.57 ± 4.29, 6.30 ± 2.44, and 5.29 ± 0.63 ppb) showed a slight reduction across the entire study period. The concentrations of SO are found to be strongly correlated with other pollutants such as CO (r = 0.614, p = 0.02), which tracked reductions in reported emissions due to tighter emissions standards enacted by the South Korean government. There was also a clear seasonal trend in the SO level, especially in periods 2 and 3, reflecting the combined effects of domestic heating by coal briquettes and meteorological conditions. Although only a 16% concentration reduction was achieved during the 27-year study duration, this is significant if one considers rapid urbanization, an 83.2% increase in population, and rapid industrialization that took place during that period.
Since 1970, a network of air quality monitoring (AQM) stations has been operated by the Korean Ministry of Environment (KMOE) for routine nationwide monitoring of air pollutant concentrations in urban/suburban areas. To date, the information obtained from these stations has provided a platform for analyzing long-term trends of major pollutant species. In this study, we examined the long-term trends of SO levels and relevant environmental parameters monitored continuously in the Yong-san district of Seoul between 1987 and 2013. The data were analyzed over various time scales (i.e., monthly, seasonal, and annual intervals). The results obtained from this study will allow us to assess the effectiveness of abatement strategy and to predict future concentrations trends in association with future abatement strategies and technologies.
1987年至2013年期间，在韩国首尔龙山区的一个空气质量监测（AQM）站间歇性地测量了大气中的二氧化硫（SO₂）浓度。将SO₂水平与同时测量的其他重要污染物进行了比较，这些污染物包括甲烷（CH₄）、一氧化碳（CO）、一氧化氮（NO）、二氧化氮（NO₂）、臭氧（O₃）和颗粒物（PM）。如果将其分为三个不同时期（时期1，1987 - 1988年；时期2，1999 - 2000年；时期3，2004 - 2013年），各自的平均[SO₂]值（6.57±4.29、6.30±2.44和5.29±0.63 ppb）在整个研究期间呈现出轻微下降。发现SO₂浓度与其他污染物如CO密切相关（r = 0.614，p = 0.02），CO随着韩国政府颁布更严格的排放标准而下降，这也反映了SO₂排放量的减少。SO₂水平也存在明显的季节性趋势，特别是在时期2和时期3，这反映了型煤家庭取暖和气象条件的综合影响。尽管在27年的研究期间SO₂浓度仅下降了16%，但考虑到在此期间发生的快速城市化、83.2%的人口增长和快速工业化，这一降幅意义重大。
自1970年以来，韩国环境部（KMOE）运营了一个空气质量监测（AQM）站网络，用于对城市/郊区的空气污染物浓度进行全国性常规监测。迄今为止，从这些站点获得的信息为分析主要污染物种类的长期趋势提供了一个平台。在本研究中，我们研究了1987年至2013年期间在首尔龙山区连续监测的SO₂水平和相关环境参数的长期趋势。对数据在各种时间尺度（即月度、季节和年度间隔）上进行了分析。本研究获得的结果将使我们能够评估减排策略的有效性，并结合未来的减排策略和技术预测未来的浓度趋势。
