1. School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, Shanghai 200093, China
2. Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China
3. State Environmental ProtectionKey Laboratory of the Cause and Prevention of Urban Air Pollution Complex, Shanghai Academy ofEnvironmental Science, Shanghai 200233, China
4. Shanghai Kede Environmental Testing Technology Consulting Service Co., Ltd., Shanghai 200235, China
Abstract:To achieve the on-line measurement of the broad-band extinction coefficient of atmospheric aerosols, an incoherent broad-band cavity enhanced absorption spectroscopy (IBBCEAS) experimental instrument was established. Then, in order to evaluate the accuracy and stability of the system, a comparative measurement was carried out simultaneously with CAPS-ALB, a single wavelength Cavity Attenuation Phase Shift ALBedo monitor, in the Environmental Science Building of Fudan University. The comparison result show that the measured aerosol extinction coefficients at the wavelength of 532nm of above two instruments has a same trend with a correlation coefficient of 0.974, indicating the established IBBCEAS system has similar reliability and stability to the metrological certificated high-precision instrument. After calibrated with CAPS-ALB, the measurement accuracy of the IBBCEAS system was significantly improved, and the measurement differency between the two instruments was reduced from 7.08Mm-1 to 2.4Mm-1. And it was also found that the broad-band spectral measurement is of great significance for studying the wavelength dependency of aerosol extinction coefficient.
[1]Horvath H. Atmospheric light absorption—A review[J]. Atmospheric Environment Part A General Topics, 1993, 27 (3): 293-317.
[2]Haywood J M, Shine K P. The effect of anthropogenic sulfate and soot aerosol on the clear sky planetary radiation budget[J]. Geophysical Research Letters, 1995, 22 (5): 603-606.
[3]Penner J E, Hegg D, Leaitch R. Peer Reviewed: Unraveling the role of aerosols in climate change[J]. Environmental Science and Technology, 2001, 35 (15): 332A-340A.
[4]Baynard T, Lovejoy E R, Pettersson A, et al. Design and Application of a Pulsed Cavity Ring-Down Aerosol Extinction Spectrometer for Field Measurements[J]. Aerosol Science and Technology, 2007, 41 (4): 447-462.
[5]Petzold A, Onasch T, Kebabian P, et al. Intercomparison of a Cavity Attenuated Phase Shift-based extinction monitor (CAPS PMex) with an integrating nephelometer and a filter-based absorption monitor[J]. Atmospheric Measurement Techniques, 2013, 6 (5): 1141-1151.
[6]Moosmüller H, Arnott W P, Rogers C F, et al. Photoacoustic and filter measurements related to aerosol light absorption during the Northern Front Range Air Quality Study (Colorado 1996/1997)[J]. Journal of Geophysical Research: Atmospheres, 1998, 103 (D21): 28149-28157.
[7]贾楠, 顾建飞, 苏明旭. 基于超声谱分析的颗粒粒度测量研究[J]. 计量学报, 2019, 40(3): 466-471.
Jia N, Gu J F, Su M X. Characterization of Particle Size Distribution Based on Ultrasonic Spectra Analysis[J]. Acta Metrologica Sinica, 2019, 40(3): 466-471.
[8]Nakayama T, Suzuki H, Kagamitani S, et al. Characterization of a Three Wavelength Photoacoustic Soot Spectrometer (PASS-3) and a Photoacoustic Extinctiometer (PAX)[J]. Journal of the Meteorological Society of Japan Ser II, 2015, 93 (2): 285-308.
[9]Schwartz S E, Charlson R J, Kahn R A, et al. Why Hasnt Earth Warmed as Much as Expected?[J]. Journal of Climate, 2010, 23 (10): 2453-2464.
[10]曹珂, 梁超群, 郭瑞民, 等. 衰荡光腔温度控制研究[J]. 计量学报, 2018, 39(3): 431-435.
Cao K, Liang C Q, Guo R M, et al. Study on Temperature Control for Ring-Down Cavity[J]. Acta Metrologica Sinica, 2018, 39(3): 431-435.
[11]O'Keefe A, Deacon D A G. Cavity ring-down optical spectrometer for absorption measurements using pulsed laser sources[J]. Review of Scientific Instruments, 1988, 59 (12): 2544-2551.
[12]Berden G, Peeters R, Meijer G. Cavity ring-down spectroscopy: Experimental schemes and applications[J]. International Reviews in Physical Chemistry, 2010, 19 (4): 565-607.
[13]Pettersson A, Lovejoy E R, Brock C A, et al. Measurement of aerosol optical extinction at with pulsed cavity ring down spectroscopy[J]. Journal of Aerosol Science, 2004, 35 (8): 995-1011.
[14]Strawa A W, Castaneda R, Owano T, et al. The Measurement of Aerosol Optical Properties Using Continuous Wave Cavity Ring-Down Techniques[J]. Journal of Atmospheric and Oceanic Technology, 2003, 20 (4): 454-465.
[15]Ge B, Sun Y, Liu Y, et al. Nitrogen dioxide measurement by cavity attenuated phase shift spectroscopy (CAPS) and implications in ozone production efficiency and nitrate formation in Beijing, China[J]. Journal of Geophysical Research: Atmospheres, 2013, 118 (16): 9499-9509.
[16]Herbelin J M, McKay J A. Development of laser mirrors of very high reflectivity using the cavity-attenuated phase-shift method[J]. Applied Optics, 1981, 20 (19): 3341-3344.
[17]Kebabian P L, Herndon S C, Freedman A. Detection of Nitrogen Dioxide by Cavity Attenuated Phase Shift Spectroscopy[J]. Analytical Chemistry, 2005, 77 (2): 724-728.
[18]Kebabian P L, Robinson W A, Freedman A. Optical extinction monitor using cw cavity enhanced detection[J]. Review of Scientific Instruments, 2007, 78 (6): 0631021-0631029.
[19]Massoli P, Kebabian P L, Onasch T B, et al. Aerosol Light Extinction Measurements by Cavity Attenuated Phase Shift (CAPS) Spectroscopy: Laboratory Validation and Field Deployment of a Compact Aerosol Particle Extinction Monitor[J]. Aerosol Science and Technology, 2010, 44 (6): 428-435.
[20]Onasch T B, Massoli P, Kebabian P L, et al. Single Scattering Albedo Monitor for Airborne Particulates[J]. Aerosol Science and Technology, 2015, 49 (4): 267-279.
[21]Fiedler S E, Hese A, Ruth A A. Incoherent broad-band cavity-enhanced absorption spectroscopy[J]. Chemical Physics Letters, 2003, 371 (3-4): 284-294.
[22]Ball S M, Langridge J M, Jones R L. Broadband cavity enhanced absorption spectroscopy using light emitting diodes[J]. Chemical Physics Letters, 2004, 398 (1-3): 68-74.
[23]Chen J, Venables D S. A broadband optical cavity spectrometer for measuring weak near-ultraviolet absorption spectra of gases[J]. Atmospheric Measurement Techniques, 2011, 4 (3): 425-436.
[24]Suhail K, George M, Chandran S, et al. Open path incoherent broadband cavity-enhanced measurements of NO3 radical and aerosol extinction in the North China Plain[J]. Spectrochimica Acta Part A: Molecular Spectroscopy, 2019, 208(1): 24-31.
[25]Zhao W, Xu X, Dong M, et al. Development of a cavity-enhanced aerosol albedometer[J]. Atmospheric Measurement Techniques, 2014, 7 (8): 2551-2566.
[26]Varma R M, Ball S M, Brauers T, et al. Light extinction by Secondary Organic Aerosol: an intercomparison of three broadband cavity spectrometers[J]. Atmospheric Measurement Techniques Discussions, 2013, 6 (4): 6685-6727.
[27]段俊, 秦敏, 卢雪, 等. 腔增强吸收光谱技术中镜片反射率的标定[J]. 光子学报, 2015, 44 (12): 119-122.
Duan J, Qin M, Lu X, et al. Calibration of mirror reflectivity for cavity enhanced absorption spectroscopy[J]. Acta Photonica Sinica, 2015, 44 (12): 119-122.
[28]吴丹, 张国城, 赵晓宁. 光散射法颗粒物监测仪粒径识别检测装置的搭建及方法研究[J]. 计量学报, 2021, 42(3): 388-394.
Wu D, Zhang G C, Zhao X N. Research on Construction and Method of Particle Size Recognition and Detection Device for Light Scattering Particles Monitor[J]. Acta Metrologica Sinica, 2021, 42(3): 388-394.
[29]Washenfelder R A, Langford A O, Fuchs H, et al. Measurement of glyoxal using an incoherent broadband cavity enhanced absorption spectrometer[J]. Atmospheric Chemistry & Physics, 2008, 8(24): 7779-7793.
[30]Langridge J M, Ball S M, Jones R L. A compact broadband cavity enhanced absorption spectrometer for detection of atmospheric NO2 using light emitting diodes[J]. Analyst, 2006, 131 (8): 916-922.
[31]Gherman T, Venables D S, Vaughan S, et al. Incoherent Broadband Cavity-Enhanced Absorption Spectroscopy in the near-Ultraviolet: Application to HONO and NO2[J].Environmental Science & Technology, 2008, 42 (3): 890-895.
[32]Voigt S, Orphal J, Burrows J P. The temperature and pressure dependence of the absorption cross-sections of NO2 in the 250~800nm region measured by Fourier-transform spectroscopy[J]. Journal of Photochemistry and Photobiology a-Chemistry, 2002, 149 (1-3): 1-7.
[33]田莹,张国城,吴丹, 等. 生物气溶胶监测仪的校准方法比较[J]. 计量学报, 2022, 43(1): 140-144.
Tian Y, Zhang G C, Wu D, et al. Comparison of Biological Calibration Methods of Bioaerosol Monitor[J]. Acta Metrologica Sinica, 2022, 43(1): 140-144.