北京上甸子大气本底站氢氟碳化物在线观测研究  

The in-situ measurement of atmospheric hydrofluorocarbons(HFCs) at the Shangdianzi Regional Background Station in Beijing

作　　者：谢文琪 姚波 权维俊[4,5] 方双喜 马志强[4] 周怀刚 董璠 周礼岩 何迪 石庆峰 陈丽曲 Beijing;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(College of Environmental Science and Engineering,Nanjing University of Information Science&Technology,Nanjing 210044,China;Nanchang County Meteorological Bureau,Nanchang 330200,China;Meteorological Observation Center of China Meteorological Administration,Beijing 100081,China;Environmental Meteorology Forecast Center of Beijing-Tianjin-Hebei,Beijing 100089,China;Beijing Shangdianzi Regional Atmosphere Watch Station,Beijing 101500,China)

机构地区：[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

出　　处：《中国环境科学》2019年第12期4941-4949,共9页China Environmental Science

基　　金：国家自然科学基金资助项目(41575114,41730103)

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.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-134 a,HFC-143 a,HFC-152 a,HFC-227 ea,HFC-236 fa,HFC-245 fa,HFC-365 mfc and HFC-4310 mee 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 for34.5%,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 llHFCs.The background mixing ratios of HFC-32、HFC-125、HFC-134 a、HFC-143 a、HFC-227 ea 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-152 a 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-134 a,HFC-152 a,HFC-236 fa,HFC-245 fa emissions using CO as a tracer.Chinese emissions of the HFCs mentioned above were 6.4,17,14,27,4.0,0.10 and 1.3 kt/a in 2018.

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 

分 类 号：X511[环境科学与工程—环境工程]