| 北京上甸子大气本底站氢氟碳化物在线观测研究 |
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| 引用本文： | 谢文琪,姚波,权维俊,方双喜,马志强,周怀刚,董璠,周礼岩,何迪,石庆峰,陈丽曲.北京上甸子大气本底站氢氟碳化物在线观测研究[J].中国环境科学,2019,39(12):4941-4949. |
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| 作者姓名： | 谢文琪 姚波 权维俊 方双喜 马志强 周怀刚 董璠 周礼岩 何迪 石庆峰 陈丽曲 |
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| 作者单位： | 1. 南京信息工程大学环境科学与工程学院, 江苏 南京 210044;
2. 南昌县气象局, 江西 南昌 330200;
3. 中国气象局气象探测中心, 北京 100081;
4. 京津冀环境气象预报预警中心, 北京 100089;
5. 上甸子区域大气本底观测站, 北京 101500 |
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| 基金项目： | 国家自然科学基金资助项目（41575114，41730103） |
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| 摘 要： | 在北京上甸子区域大气本底站利用气相色谱/质谱联用（GC-MS）系统对大气中11种氢氟碳化物（HFCs）开展在线观测研究.2018年1~12月，HFC-23、HFC-32、HFC-125、HFC-134a、HFC-143a、HFC-152a、HFC-227ea、HFC-236fa、HFC-245fa、HFC-365mfc、HFC-4310mee本底数据浓度分别为：（31.9±0.4）×10-12、（22.1±1.7）×10-12、（29.3±1.3）×10-12、（110.2±2.4）×10-12、（24.0±0.3）×10-12、（10.3±0.7）×10-12、（1.59±0.04）×10-12、（0.19±0.01）×10-12、（3.30±0.08）×10-12、（1.27±0.03）×10-12、（0.28±0.01）×10-12；本底数据出现频率分别为：34.5%、23.4%、22.5%、24.6%、24.5%、42.5%、24.3%、46.4%、38.3%、68.1%、77.9%；非本底数据浓度分别为：（39.2±11.1）×10-12、（47.7±21.8）×10-12、（38.6±8.7）×10-12、（137.3±15.7）×10-12、（26.1±2.2）×10-12、（15.9±7.0）×10-12、（2.77±1.11）×10-12、（0.25±0.06）×10-12、（4.10±0.97）×10-12、（1.34±0.06）×10-12、（0.30±0.01）×10-12.HFC-32、HFC-125、HFC-134a、HFC-143a、HFC-227ea本底浓度呈线性上升趋势，年增长率分别为：4.4×10-12，3.8×10-12，7.3×10-12，1.0×10-12，0.14×10-12a-1，而HFC-152a呈现明显的季节变化.以CO为示踪物利用示踪物比值相关法估算了HFC-23、HFC-32、HFC-125、HFC-143a、HFC-152a、HFC-236fa、HFC-245fa排放量，分别为6.4，17，14，27，4.0，0.10，1.3kt/a.
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| 关 键 词： | 氢氟碳化物(HFCs) 大气浓度 在线观测 气相色谱/质谱联用(GC/MS) 示踪物比值相关法 |
| 收稿时间： | 2019-06-19 |
The in-situ measurement of atmospheric hydrofluorocarbons (HFCs) at the Shangdianzi Regional Background Station in Beijing |
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| XIE Wen-qi,YAO Bo,QUAN Wei-jun,FANG Shuang-xi,MA Zhi-qiang,ZHOU Huai-gang,DONG Fan,ZHOU Li-yan,HE Di,SHI Qing-feng,CHEN Li-qu.The in-situ measurement of atmospheric hydrofluorocarbons (HFCs) at the Shangdianzi Regional Background Station in Beijing[J].China Environmental Science,2019,39(12):4941-4949. |
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| Authors: | XIE Wen-qi YAO Bo QUAN Wei-jun FANG Shuang-xi MA Zhi-qiang ZHOU Huai-gang DONG Fan ZHOU Li-yan HE Di SHI Qing-feng CHEN Li-qu |
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| Institution: | 1. College of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;
2. Nanchang County Meteorological Bureau, Nanchang 330200, China;
3. Meteorological Observation Center of China Meteorological Administration, Beijing 100081, China;
4. Environmental Meteorology Forecast Center of Beijing-Tianjin-Hebei, Beijing 100089, China;
5. Beijing Shangdianzi Regional Atmosphere Watch Station, Beijing 101500, China |
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| Abstract: | A gas chromatograph/mass spectrometer (GC/MS) system was used for in-site measurements of atmospheric hydrofluorocarbons (HFCs) at the Shangdianzi Regional Background Station from January 2018 to December 2018. The background mixing ratios of HFC-23, HFC-32, HFC-125, HFC-134a, HFC-143a, HFC-152a, HFC-227ea, HFC-236fa, HFC-245fa, HFC-365mfc and HFC-4310mee were (31.9±0.4)×10-12, (22.1±1.7)×10-12, (29.3±1.3)×10-12, (110.2±2.4)×10-12, (24.0±0.3)×10-12, (10.3±0.7)×10-12, (1.59±0.04)×10-12, (0.19±0.01)×10-12, (3.30±0.08)×10-12, (1.27±0.03)×10-12, (0.28±0.01)×10-12, respectively, while the polluted mixing ratios were (39.2±11.1)×10-12, (47.7±21.8)×10-12, (38.6±8.7)×10-12, (137.3±15.7)×10-12, (26.1±2.2)×10-12, (15.9±7.0)×10-12, (2.77±1.11)×10-12, (0.25±0.06)×10-12, (4.10±0.97)×10-12, (1.34±0.06)×10-12, (0.30±0.01)×10-12. Background conditions occurred for 34.5%, 23.4%, 22.5%, 24.6%, 24.5%, 42.5%, 24.3%, 46.4%, 38.3%, 68.1%, 77.9% of all measurements for the 11HFCs. The background mixing ratios of HFC-32、HFC-125、HFC-134a、HFC-143a、HFC-227ea exhibited a linear increasing trend at 4.4×10-12, 3.8×10-12, 7.3×10-12, 1.0×10-12, 0.14×10-12a-1, while HFC-152a background data showed a strong seasonal variation. A tracer-radio method was applied to estimate the emissions of HFC-23, HFC-32, HFC-125, HFC-134a, HFC-152a, HFC-236fa, HFC-245fa emissions using CO as a tracer. Chinese emissions of the HFCs mentioned above were 6.4,17,14,27,4.0,0.10 and 1.3kt/a in 2018. |
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| Keywords: | hydrofluorocarbons (HFCs) atmospheric mixing ratio in-situ measurement gas chromatograph/mass spectrometer (GC/MS) tracer ratio method |
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