北京地区基于化学组分的夏季气溶胶吸湿特性

张泽宇; 王甜甜; 范萌; 陈良富; 余超; 纪轩禹; 陶金花

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中国环境科学 ›› 2020, Vol. 40 ›› Issue (6) : 2353-2360.

大气污染与控制

北京地区基于化学组分的夏季气溶胶吸湿特性

张泽宇^1,2, 王甜甜³, 范萌¹, 陈良富¹, 余超¹, 纪轩禹³, 陶金花¹

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An experimental study on aerosol hygroscopic properties during the summer in Beijing based on chemical composition

ZHANG Ze-yu^1,2, WANG Tian-tian³, FAN Meng¹, CHEN Liang-fu¹, YU Chao¹, JI Xuan-yu³, TAO Jin-hua¹

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摘要

利用吸湿增长光散射测量系统、黑碳仪和气相色谱质谱联用仪等仪器，于2019年7月15日~8月4日在北京地区开展了为期21d的大气气溶胶观测实验.观测期间北京市区于7月27日出现短暂的轻度污染，并在7月29日出现强降水天气.结果显示：北京市区夏季大气污染变化剧烈且短暂，大气气溶胶散射吸湿增长因子f（RH）呈现平滑连续的特点，并且降水会对f（RH）造成显著影响.7月27日PM_2.5的平均质量浓度为（92.54±47.05）μg/m³；，表现出较为剧烈的污染变化.7月28~30日平均散射吸湿增长因子f（80%±1%）分别为（1.50±0.35），（1.43±0.36）和（1.48±0.25），反映了降水对于大气气溶胶的湿清除作用.最后利用实验数据估算粒径吸湿增长因子gf（RH），并建模研究f（RH）和gf（RH）的关系，模型精度R²最高可达0.698.

Abstract

With Aerosol Conditioning System (ACS1000), aethalometer (AE33) and gas chromatography/mass selective detector (GC/MSD), an experimental study on the atmospheric aerosol in Beijing was conducted from July 15 to August 4, 2019. There was a short-term air pollution process on July 27 and a strong precipitation on July 29 during the observation. This pollution process in Beijing was short and the concentrations of the pollutants changed dramatically. A continuously increasing tread of f(RH) was observed in the experiment, and the measurements indicated that the precipitation had a great impact on the f(RH). The average concentration of PM_2.5 on July 27 was (92.54±47.05) μg/m³ with a dramatic variation. The average scattering enhancement factors for f(80%±1%) from July 28 to July 30 were (1.50±0.35), (1.43±0.36) and (1.48±0.25), respectively. Furthermore, the experimental data were used to develop a quantitative model between f(RH) and gf(RH) for estimating the hygroscopic growth factor gf(RH). The result of the f(RH)-gf(RH) relationship model showed a good performance, and its R² could reach to 0.698.

导出引用

张泽宇, 王甜甜, 范萌, 陈良富, 余超, 纪轩禹, 陶金花. 北京地区基于化学组分的夏季气溶胶吸湿特性[J]. 中国环境科学. 2020, 40(6): 2353-2360

ZHANG Ze-yu, WANG Tian-tian, FAN Meng, CHEN Liang-fu, YU Chao, JI Xuan-yu, TAO Jin-hua. An experimental study on aerosol hygroscopic properties during the summer in Beijing based on chemical composition[J]. China Environmental Science. 2020, 40(6): 2353-2360

中图分类号： X513

参考文献

[1] Muller A, Miyazaki Y, Aggarwal S G, et al.Effects of chemical composition and mixing state on size-resolved hygroscopicity and cloud condensation nuclei activity of submicron aerosols at a suburban site in northern Japan in summer [J].Journal of Geophysical Research-Atmospheres, 2017,122(17):9301-9318.
[2] Mcinnes L, Bergin M, Ogren J, et al.Apportionment of light scattering and hygroscopic growth to aerosol composition [J].Geophysical Research Letters, 1998,25(4):513-516.
[3] Zieger P, Fierz-Schmidhauser R, Weingartner E, et al.Effects of relative humidity on aerosol light scattering: results from different European sites [J].Atmospheric Chemistry Physics, 2013,13(21): 10609-10631.
[4] Petters M D, Kreidenweis S M.A single parameter representation of hygroscopic growth and cloud condensation nucleus activity [J].Atmospheric Chemistry Physics, 2007,7(8):1961-1971.
[5] Gysel M, Crosier J, Topping D O, et al.Closure study between chemical composition and hygroscopic growth of aerosol particles during TORCH2[J].Atmospheric Chemistry Physics, 2007,7(24): 6131-6144.
[6] 颜鹏,潘小乐,汤洁,等.北京市区大气气溶胶散射系数亲水增长的观测研究[J].气象学报, 2008,66(1):111-119. Yan P, Pan X L, Tang J, et al.An experimental study on the influence of relative humidity on the atmospheric aerosol scattering coefficient at an urban site in Beijing [J].Acta MeteorologicaSinica, 2008,66(1): 111-119.
[7] 刘新罡.大气气溶胶吸湿性质观测、模型研究——以北京、珠江三角洲地区为例[D].北京:北京大学, 2008. Liu X G.Research on aerosol hygroscopic properties by measurement and model——Taking Beijing and PRD for example [D].Beijing; Peking University, 2008.
[8] Tao J, Zhang L M, Gao J, et al.Aerosol chemical composition and light scattering during a winter season in Beijing [J].Atmospheric Environment, 2015,110:36-44.
[9] Wu Z J, Zheng J, Shang D J, et al.Particle hygroscopicity and its link to chemical composition in the urban atmosphere of Beijing, China, during summertime [J].Atmospheric Chemistry Physics, 2016,16(2): 1123-1138.
[10] Cai M F, Tan H B, Chan C K, et al.Comparison of aerosol hygroscopcity, volatility, and chemical composition between a suburban site in the Pearl River Delta Region and a marine site in Okinawa [J].Aerosol and Air Quality Research, 2017,17(12):3194-3208.
[11] 吴奕霄,银燕,顾雪松,等.南京北郊大气气溶胶的吸湿性观测研究[J].中国环境科学, 2014,34(8):1938-49. Wu Y X, YinY, Gu X S, et al.An observational study of the hygroscopic properties of aerosols in north suburb of Nanjing [J].China Environmental Science, 2014,34(8):1938-49.
[12] 李琦,银燕,顾雪松,等.南京夏季气溶胶吸湿增长因子和云凝结核的观测研究[J].中国环境科学, 2015,35(2):337-46. Li Q, Yin Y, Gu X S, et al.An observational study of aerosol hygroscopic growth factor and cloud condensation nuclei in Nanjing in summer [J].China Environmental Science, 2015,35(2):337-46.
[13] 郎红梅,秦凯,袁丽梅,等.徐州冬季雾-霾天颗粒物粒径及气溶胶光学特性变化特征[J].中国环境科学, 2016,8):2260-9. Lang H M, QinK, Yuan L M, et al.Particles size distributions and aerosol optical properties during haze-fog episodes in the winter of Xuzhou [J].China Environmental Science, 2016,(8):2260-9.
[14] 钟声,崔嘉宇.在线气相色谱-质谱联用技术在定性定量监测水中挥发性有机物的应用[J].环境监控与预警, 2018,10(1):22-25. Zhong S, Cui J Y.Study on application of on-line GC-MS in determining volatile organic compounds in surface water [J].Environmental Monitoring and Forewarning, 2018,10(1):22-25.
[15] 杨卫芬,何涛,叶香.2018年长三角一次持续重污染过程分析[J].环境监控与预警, 2018,10(5):12-17. Yang W F, He T, Ye X.Analysis of a process of continuous heavy pollution in Yangtze River Delta in 2018[J].Environmental Monitoring and Forewarning, 2018,10(5):12-17.
[16] LIU P F, ZHAO C S, Göbel T, et al.Hygroscopic properties of aerosol particles at high relative humidity and their diurnal variations in the North China Plain [J].Atmospheric Chemistry Physics, 2011,11(7): 3479-3494.
[17] Mikhailov E F, Mironov G N, Pohlker C, et al.Chemical composition, microstructure, and hygroscopic properties of aerosol particles at the Zotino Tall Tower Observatory (ZOTTO), Siberia, during a summer campaign [J].Atmospheric Chemistry Physics, 2015,15(15):8847-8869.
[18] Ostrom E, Noone K J.Vertical profiles of aerosol scattering and absorption measured in situ during the North Atlantic Aerosol Characterization Experiment (ACE-2) [J].Tellus Series B-Chemical and Physical Meteorology, 2000,52(2):526-545.
[19] Topping D O, Mcfiggans G B, Coe H.A curved multi-component aerosol hygroscopicity model framework: Part 1-Inorganic compounds [J].Atmospheric Chemistry Physics, 2005,5(5):1205-1222.
[20] 北京市环境保护监测中心.北京空气24小时|受“桑拿天”影响本市出现污染[EB/OL].https://mp.weixin.qq.com/s/7mQZjU6M2YoJ9mCRsaGXmw, 2019-07-27. Beijing Municipal Environmental Monitoring Center.Beijing Air 24hours|Affected by “sauna day” pollution occurs in Beijing [EB/OL].https://mp.weixin.qq.com/s/7mQZjU6M2YoJ9mCRsaGXmw, 2019-07-27.
[21] Kotchenruther R A, Hobbs P V.Humidification factors of aerosols from biomass burning in Brazil [J].Journal of Geophysical Research-Atmospheres, 1998,103(D24):32081-32089.
[22] Kotchenruther R A, Hobbs P V, Hegg D A.Humidification factors for atmospheric aerosols off the mid-Atlantic coast of the United States [J].Journal of Geophysical Research-Atmospheres, 1999,104(D2): 2239-2251.