| 长三角地区全氟温室气体本底特征及来源 |
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| 引用本文： | 浦静姣,徐宏辉,姚波,张超,单萌.长三角地区全氟温室气体本底特征及来源[J].中国环境科学,2022,42(10):4494-4500. |
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| 作者姓名： | 浦静姣 徐宏辉 姚波 张超 单萌 |
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| 作者单位： | 1. 浙江省气象科学研究所, 浙江 杭州 310008;2. 复旦大学大气与海洋科学系, 上海 200438;3. 衢州市气象局, 浙江 衢州 324000;4. 浙江临安大气成分本底国家野外科学观测研究站, 浙江 杭州 311307 |
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| 基金项目： | 国家重点研发计划项目（2020YFA0607502）；浙江省气象科技计划项目（2021ZD16） |
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| 摘 要： | 采用位于长三角地区的临安区域大气本底站罐采样获得的全氟温室气体（PFCs、SF6、NF3、SO2F2）浓度，分析2011~2020年该地区大气中全氟温室气体的浓度分布特征和变化趋势.结果显示，临安站绝大部分全氟温室气体的浓度均呈现逐年升高的变化趋势，至2020年长三角地区全氟温室气体本底浓度分别达到（86.30±0.52）×10-12（CF4）、（5.03±0.00）×10-12（C2F6）、（0.70±0.01）×10-12（C3F8）、（1.82±0.00）×10-12（c-C4F8）、（10.44±0.01）×10-12（SF6）、（2.36±0.04）×10-12（NF3）、（2.61±0.05）×10-12（SO2F2）.长三角地区大部分全氟温室气体的本底浓度与全球本底值接近.通过对临安站全氟温室气体污染浓度的潜在源贡献作用（PSCF）和浓度权重轨迹（CWT）分析显示，临安站全氟化碳PFCs （CF4、C4F10、C2F6、C3F8、c-C4F8）的潜在源区主要包括山东、江苏、安徽、上海、浙江中北部和江西东北部地区，NF3、SF6、SO2F2的潜在源区则集中在江苏中南部、上海、浙北地区.
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| 关 键 词： | 全氟温室气体 长三角 浓度 潜在源区 |
| 收稿时间： | 2022-04-02 |
Characteristics of background conditions and potential source areas of atmospheric perfluorinated greenhouse gases in the Yangtze River Delta |
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| PU Jing-jiao,XU Hong-hui,YAO Bo,ZHANG Chao,SHAN Meng.Characteristics of background conditions and potential source areas of atmospheric perfluorinated greenhouse gases in the Yangtze River Delta[J].China Environmental Science,2022,42(10):4494-4500. |
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| Authors: | PU Jing-jiao XU Hong-hui YAO Bo ZHANG Chao SHAN Meng |
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| Institution: | 1. Zhejiang Meteorological Science Institute, Hangzhou 310008, China;2. Department of Atmospheric and Oceanic Sciences, Fudan University, Shanghai 200438, China;3. Quzhou Meteorological Bureau, Quzhou 324000, China;4. Zhejiang Lin'an Atmospheric Background National Observation and Research Station, Hangzhou 311307, China |
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| Abstract: | The concentrations of perfluorinated greenhouse gases (PFCs, SF6, NF3 and SO2F2) were measured by means of canister sampling at Lin'an regional atmospheric background station, which was located in the Yangtze River Delta. The characteristics and long-term trends of the concentrations of these perfluorinated greenhouse gases from 2011 to 2020 were analyzed. The results showed that the concentrations of most perfluorinated greenhouse gases at Lin'an station had been increasing year by year. At 2020, the background concentrations of perfluorinated greenhouse gases in the Yangtze River Delta had reached the level of (86.30±0.52)×10-12 (CF4), (5.03±0.00)×10-12 (C2F6), (0.70±0.01)×10-12 (C3F8), (1.82±0.00)×10-12 (c-C4F8), (10.44±0.01)×10-12 (SF6), (2.36±0.04)×10-12 (NF3), (2.61±0.05)×10-12 (SO2F2), respectively, which were in consistent with the global background levels. Both Potential Source Contribution Function (PSCF) and Concentration-weighted Trajectory (CWT) methods were applied to reveal the potential source areas of perfluorinated greenhouse gases at Lin'an station. The results indicated that the potential source areas of PFCs (including CF4, C4F10, C2F6, C3F8and c-C4F8) mainly covered the provinces of Shandong, Jiangsu, Anhui, Shanghai, Northern and Central Zhejiang and Northeast Jiangxi, while the potential source areas of NF3, SF6 and SO2F2 were concentrated in Central and Southern Jiangsu, Shanghai and Northern Zhejiang. |
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| Keywords: | perfluorinated greenhouse gas Yangtze River Delta concentration potential source area |
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