Articles | Volume 19, issue 14
https://doi.org/10.5194/amt-19-4797-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-19-4797-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
27 Jul 2026
Research article |
| 27 Jul 2026
| 27 Jul 2026
Five-channel TD-CEAS measurements of gaseous and particulate organic nitrates with NO ∕ NO2 interference correction under high-NOx conditions
Xiao Tian
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
Hongcheng Lu
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
Wei Song
CORRESPONDING AUTHOR
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
Xue Yu
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
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The emission of biogenic volatile organic compounds (BVOCs) from plant leaves is an essential part of biosphere–atmosphere interactions. Here we demonstrate how a dynamic chamber for measuring branch-scale BVOC emissions could be characterized both in the lab for adsorptive losses and in the field for ambient–enclosure environmental differences. The results also imply emission factors for terpenes might be underestimated if measured using dynamic chambers without certified transfer efficiencies.
Wei Sun, Yuzhen Fu, Guohua Zhang, Yuxiang Yang, Feng Jiang, Xiufeng Lian, Bin Jiang, Yuhong Liao, Xinhui Bi, Duohong Chen, Jianmin Chen, Xinming Wang, Jie Ou, Ping'an Peng, and Guoying Sheng
Atmos. Chem. Phys., 21, 16631–16644, https://doi.org/10.5194/acp-21-16631-2021, https://doi.org/10.5194/acp-21-16631-2021, 2021
Short summary
Short summary
We sampled cloud water at a remote mountain site and investigated the molecular characteristics. CHON and CHO are dominant in cloud water. No statistical difference in the oxidation state is observed between cloud water and interstitial PM2.5. Most of the formulas are aliphatic and olefinic species. CHON, with aromatic structures and organosulfates, are abundant, especially in nighttime samples. The in-cloud and multi-phase dark reactions likely contribute significantly.
Cited articles
Andersen, S. T., Sander, R., Dewald, P., Wüst, L., Seubert, T., Türk, G. N. T. E., Schuladen, J., McGillen, M. R., Xue, C., Mellouki, A., Kukui, A., Michoud, V., Cirtog, M., Cazaunau, M., Bauville, A., Bouzidi, H., Formenti, P., Denjean, C., Etienne, J.-C., Garrouste, O., Cantrell, C., Lelieveld, J., and Crowley, J. N.: Short-lived organic nitrates in a suburban temperate forest: an indication of efficient assimilation of reactive nitrogen by the biosphere?, Atmos. Chem. Phys., 25, 5893–5909, https://doi.org/10.5194/acp-25-5893-2025, 2025.
Atkinson, R.: Atmospheric chemistry of VOCs and NOx, Atmos. Environ., 34, 2063–2101, https://doi.org/10.1016/s1352-2310(99)00460-4, 2000.
Chen, J., Wu, H., Liu, A. W., Hu, S. M., and Zhang, J.: Field measurement of NO2 and RNO2 by two-channel thermal dissociation cavity ring down spectrometer, Chin. J. Chem. Phys., 30, 493–498, https://doi.org/10.1063/1674-0068/30/cjcp1705084, 2017.
Chen, J., Wang, X., Zhang, J., Li, M., Liu, Z., Bi, Y., Wu, D., Yin, X., Gu, R., Jiang, Y., Shan, Y., Zhao, Y., Xue, L., and Wang, W.: Particulate organic nitrates at Mount Tai in winter and spring: Variation characteristics and effects of mountain-valley breezes and elevated emission sources, Environ. Res., 212, 113182, https://doi.org/10.1016/j.envres.2022.113182, 2022.
Day, D. A., Wooldridge, P. J., Dillon, M. B., Thornton, J. A., and Cohen, R. C.: A thermal dissociation laser-induced fluorescence instrument for in situ detection of NO2, peroxy nitrates, alkyl nitrates, and HNO3, J. Geophys. Res.-Atmos., 107, ACH 4-1–ACH 4-14, https://doi.org/10.1029/2001jd000779, 2002.
Day, D. A., Campuzano-Jost, P., Nault, B. A., Palm, B. B., Hu, W., Guo, H., Wooldridge, P. J., Cohen, R. C., Docherty, K. S., Huffman, J. A., de Sá, S. S., Martin, S. T., and Jimenez, J. L.: A systematic re-evaluation of methods for quantification of bulk particle-phase organic nitrates using real-time aerosol mass spectrometry, Atmos. Meas. Tech., 15, 459–483, https://doi.org/10.5194/amt-15-459-2022, 2022.
Dewald, P., Dörich, R., Schuladen, J., Lelieveld, J., and Crowley, J. N.: Impact of ozone and inlet design on the quantification of isoprene-derived organic nitrates by thermal dissociation cavity ring-down spectroscopy (TD-CRDS), Atmos. Meas. Tech., 14, 5501–5519, https://doi.org/10.5194/amt-14-5501-2021, 2021.
Fisher, J. A., Jacob, D. J., Travis, K. R., Kim, P. S., Marais, E. A., Chan Miller, C., Yu, K., Zhu, L., Yantosca, R. M., Sulprizio, M. P., Mao, J., Wennberg, P. O., Crounse, J. D., Teng, A. P., Nguyen, T. B., St. Clair, J. M., Cohen, R. C., Romer, P., Nault, B. A., Wooldridge, P. J., Jimenez, J. L., Campuzano-Jost, P., Day, D. A., Hu, W., Shepson, P. B., Xiong, F., Blake, D. R., Goldstein, A. H., Misztal, P. K., Hanisco, T. F., Wolfe, G. M., Ryerson, T. B., Wisthaler, A., and Mikoviny, T.: Organic nitrate chemistry and its implications for nitrogen budgets in an isoprene- and monoterpene-rich atmosphere: constraints from aircraft (SEAC4RS) and ground-based (SOAS) observations in the Southeast US, Atmos. Chem. Phys., 16, 5969–5991, https://doi.org/10.5194/acp-16-5969-2016, 2016.
Friedrich, N., Tadic, I., Schuladen, J., Brooks, J., Darbyshire, E., Drewnick, F., Fischer, H., Lelieveld, J., and Crowley, J. N.: Measurement of NOx and NOy with a thermal dissociation cavity ring-down spectrometer (TD-CRDS): instrument characterisation and first deployment, Atmos. Meas. Tech., 13, 5739–5761, https://doi.org/10.5194/amt-13-5739-2020, 2020.
Fry, J. L., Draper, D. C., Zarzana, K. J., Campuzano-Jost, P., Day, D. A., Jimenez, J. L., Brown, S. S., Cohen, R. C., Kaser, L., Hansel, A., Cappellin, L., Karl, T., Hodzic Roux, A., Turnipseed, A., Cantrell, C., Lefer, B. L., and Grossberg, N.: Observations of gas- and aerosol-phase organic nitrates at BEACHON-RoMBAS 2011, Atmos. Chem. Phys., 13, 8585–8605, https://doi.org/10.5194/acp-13-8585-2013, 2013.
Fuchs, H., Dube, W. P., Cicioira, S. J., and Brown, S. S.: Determination of inlet transmission and conversion efficiencies for in situ measurements of the nocturnal nitrogen oxides, NO3, N2O5 and NO2, via pulsed cavity ring-down spectroscopy, Anal. Chem., 80, 6010–6017, https://doi.org/10.1021/ac8007253, 2008.
Garner, N. M., Matchett, L. C., and Osthoff, H. D.: Quantification of non-refractory aerosol nitrate in ambient air by thermal dissociation cavity ring-down spectroscopy, Environ. Sci. Technol., 54, 9854–9861, https://doi.org/10.1021/acs.est.0c01156, 2020.
Gingerysty, N. J., Odame-Ankrah, C. A., Jordan, N., and Osthoff, H. D.: Interference from HONO in the measurement of ambient air NO2 via photolytic conversion and quantification of NO, J. Environ. Sci., 107, 184-193, https://doi.org/10.1016/j.jes.2020.12.011, 2021.
He, X. W., Zhang, C. L., Liu, P. F., Zhang, G., Wu, H., Peng, Y. X., Liu, J. F., Liu, C. T., and Mu, Y. J.: A novel photochemical conversion technique for reliable calibration of peroxyacetyl nitrate (PAN) analyzers, Sci. Total Environ., 872, 162164, https://doi.org/10.1016/j.scitotenv.2023.162164, 2023.
Keehan, N. I., Brownwood, B., Marsavin, A., Day, D. A., and Fry, J. L.: A thermal-dissociation–cavity ring-down spectrometer (TD-CRDS) for the detection of organic nitrates in gas and particle phases, Atmos. Meas. Tech., 13, 6255–6269, https://doi.org/10.5194/amt-13-6255-2020, 2020.
Kiendler-Scharr, A., Mensah, A. A., Friese, E., Topping, D., Nemitz, E., Prevot, A. S. H., Äijälä, M., Allan, J., Canonaco, F., Canagaratna, M., Carbone, S., Crippa, M., Dall Osto, M., Day, D. A., De Carlo, P., Di Marco, C. F., Elbern, H., Eriksson, A., Freney, E., Hao, L., Herrmann, H., Hildebrandt, L., Hillamo, R., Jimenez, J. L., Laaksonen, A., McFiggans, G., Mohr, C., O'Dowd, C., Otjes, R., Ovadnevaite, J., Pandis, S. N., Poulain, L., Schlag, P., Sellegri, K., Swietlicki, E., Tiitta, P., Vermeulen, A., Wahner, A., Worsnop, D., and Wu, H. C.: Ubiquity of organic nitrates from nighttime chemistry in the European submicron aerosol, Geophys. Res. Lett., 43, 7735–7744, https://doi.org/10.1002/2016GL069239, 2016.
Kirchner, F., Mayer-Figge, A., Zabel, F., and Becker, K. H.: Thermal stability of peroxynitrates, Int. J. Chem. Kinet., 31, 127–144, https://doi.org/10.1002/(SICI)1097-4601(1999)31:2<127::AID-KIN6>3.0.CO;2-L, 1999.
Li, C., Wang, H., Chen, X., Zhai, T., Chen, S., Li, X., Zeng, L., and Lu, K.: Thermal dissociation cavity-enhanced absorption spectrometer for measuring NO2, RO2NO2, and RONO2 in the atmosphere, Atmos. Meas. Tech., 14, 4033–4051, https://doi.org/10.5194/amt-14-4033-2021, 2021.
Li, C., Wang, H., Chen, X., Zhai, T., Ma, X., Yang, X., Chen, S., Li, X., Zeng, L., and Lu, K.: Observation and modeling of organic nitrates on a suburban site in southwest China, Sci. Total Environ., 859, 160287, https://doi.org/10.1016/j.scitotenv.2022.160287, 2023.
Lin, C., Hu, R., Xie, P., Zhang, G., Liu, X., Tong, J., and Liu, W.: A three-channel thermal dissociation cavity ring-down spectrometer for simultaneous measurement of ambient total peroxy nitrates, total alkyl nitrates, and NO2, Talanta, 270, 125524, https://doi.org/10.1016/j.talanta.2023.125524, 2024.
Lin, C., Hu, R., Liu, X., Ren, Y., Zhang, G., Tong, J., Wang, R., Wei, L., Xie, P., and Liu, W.: A high-sensitive multi-pass thermal dissociation cavity ring-down spectrometer for PNs and ANs measurement: Accurate quantification in realtime under gas and particle phase, Sens. Actuat. B, 449, https://doi.org/10.1016/j.snb.2025.139090, 2026.
Liu, Z., Hu, W., Cai, Y., Feng, T., Pan, T., Zhao, W., Huang, S., and Yuan, B.: Unveiling the shifting PM2.5 chemistry in industrial regions of Pearl River Delta, China: Rising nitrate contributions amidst emission reductions, J. Hazard. Mater., 503, 140986, https://doi.org/10.1016/j.jhazmat.2025.140986, 2026.
Mielke, L. H., Furgeson, A., and Osthoff, H. D.: Observation of CINO2 in a Mid-Continental Urban Environment, Environ. Sci. Technol., 45, 8889–8896, https://doi.org/10.1021/es201955u, 2011.
Murphy, J. G., Thornton, J. A., Wooldridge, P. J., Day, D. A., Rosen, R. S., Cantrell, C., Shetter, R. E., Lefer, B., and Cohen, R. C.: Measurements of the sum of HO2NO2 and CH3O2NO2 in the remote troposphere, Atmos. Chem. Phys., 4, 377–384, https://doi.org/10.5194/acp-4-377-2004, 2004.
Neu, J. L., Lawler, M. J., Prather, M. J., and Saltzman, E. S.: Oceanic alkyl nitrates as a natural source of tropospheric ozone, Geophys. Res. Lett., 35, L13814, https://doi.org/10.1029/2008gl034189, 2008.
Ohara, N., Shioji, T., Matsumoto, J., Inomata, S., Sakamoto, Y., Kajii, Y., Shiigi, H., and Sadanaga, Y.: Improved continuous measurement system for atmospheric total peroxy and total organic nitrate under the high NOx condition, Rev. Sci. Instrum., 95, https://doi.org/10.1063/5.0172219, 2024.
Paul, D., Furgeson, A., and Osthoff, H. D.: Measurements of total peroxy and alkyl nitrate abundances in laboratory-generated gas samples by thermal dissociation cavity ring-down spectroscopy, Rev. Sci. Instrum., 80, 8, https://doi.org/10.1063/1.3258204, 2009.
Pérez, I. M., Wooldridge, P. J., and Cohen, R. C.: Laboratory evaluation of a novel thermal dissociation chemiluminescence method for in situ detection of nitrous acid, Atmos. Environ., 41, 3993–4001, https://doi.org/10.1016/j.atmosenv.2007.01.060, 2007.
Perring, A. E., Pusede, S. E., and Cohen, R. C.: An observational perspective on the atmospheric impacts of alkyl and multifunctional nitrates on ozone and secondary organic aerosol, Chem. Rev., 113, 5848–5870, https://doi.org/10.1021/cr300520x, 2013.
Riedel, T. P., Wolfe, G. M., Danas, K. T., Gilman, J. B., Kuster, W. C., Bon, D. M., Vlasenko, A., Li, S.-M., Williams, E. J., Lerner, B. M., Veres, P. R., Roberts, J. M., Holloway, J. S., Lefer, B., Brown, S. S., and Thornton, J. A.: An MCM modeling study of nitryl chloride (ClNO2) impacts on oxidation, ozone production and nitrogen oxide partitioning in polluted continental outflow, Atmos. Chem. Phys., 14, 3789–3800, https://doi.org/10.5194/acp-14-3789-2014, 2014.
Roberts, J. M.: The atmospheric chemistry of organic nitrates, Atmos. Environ. A, 24, 243–287, https://doi.org/10.1016/0960-1686(90)90108-y, 1990.
Rollins, A. W., Smith, J. D., Wilson, K. R., and Cohen, R. C.: Real time in situ detection of organic nitrates in atmospheric aerosols, Environ. Sci. Technol., 44, 5540–5545, https://doi.org/10.1021/es100926x, 2010.
Rollins, A. W., Browne, E. C., Min, K. E., Pusede, S. E., Wooldridge, P. J., Gentner, D. R., Goldstein, A. H., Liu, S., Day, D. A., Russell, L. M., and Cohen, R. C.: Evidence for NOx control over nighttime SOA formation, Science, 337, 1210–1212, https://doi.org/10.1126/science.1221520, 2012.
Sadanaga, Y., Takaji, R., Ishiyama, A., Nakajima, K., Matsuki, A., and Bandow, H.: Thermal dissociation cavity attenuated phase shift spectroscopy for continuous measurement of total peroxy and organic nitrates in the clean atmosphere, Rev. Sci. Instrum., 87, 074102, https://doi.org/10.1063/1.4958167, 2016.
Salas, J., Paci, M. A. B., and Malanca, F. E.: Water vapour influence over the PAN stability: Homogeneous and heterogeneous processes between PAN-NO2-H2O, Atmos. Environ., 232, https://doi.org/10.1016/j.atmosenv.2020.117537, 2020.
Shao, D., Qin, M., Fang, W., Han, B. B., Xie, J. Y., Zhao, X. D., Liao, Z. T., Ren, E. B., and Wei, Z.: Quantification of organic nitrates using thermal dissociation broadband cavity-enhanced absorption spectroscopy: interference suppression and atmospheric measurement, Anal. Chem., 98, 2048–2059, https://doi.org/10.1021/acs.analchem.5c05426, 2026.
Sobanski, N., Schuladen, J., Schuster, G., Lelieveld, J., and Crowley, J. N.: A five-channel cavity ring-down spectrometer for the detection of NO2, NO3, N2O5, total peroxy nitrates and total alkyl nitrates, Atmos. Meas. Tech., 9, 5103–5118, https://doi.org/10.5194/amt-9-5103-2016, 2016.
Sun, M., Zhou, Y., Wang, Y., Qiao, X., Wang, J., and Zhang, J.: Heterogeneous reaction of peroxyacetyl nitrate on real-world PM2.5 aerosols: kinetics, influencing factors, and atmospheric implications, Environ. Sci. Technol., 56, 9325–9334, https://doi.org/10.1021/acs.est.2c03050, 2022.
Taha, Y. M., Saowapon, M. T., Assad, F. V., Ye, C. Z., Chen, X., Garner, N. M., and Osthoff, H. D.: Quantification of peroxynitric acid and peroxyacyl nitrates using an ethane-based thermal dissociation peroxy radical chemical amplification cavity ring-down spectrometer, Atmos. Meas. Tech., 11, 4109–4127, https://doi.org/10.5194/amt-11-4109-2018, 2018.
Thaler, R. D., Mielke, L. H., and Osthoff, H. D.: Quantification of nitryl chloride at part per trillion mixing ratios by thermal dissociation cavity ring-down spectroscopy, Anal. Chem., 83, 2761–2766, https://doi.org/10.1021/ac200055z, 2011.
Thieser, J., Schuster, G., Schuladen, J., Phillips, G. J., Reiffs, A., Parchatka, U., Pöhler, D., Lelieveld, J., and Crowley, J. N.: A two-channel thermal dissociation cavity ring-down spectrometer for the detection of ambient NO2, RO2NO2 and RONO2, Atmos. Meas. Tech., 9, 553–576, https://doi.org/10.5194/amt-9-553-2016, 2016.
Tian, X. and Lu, H.: Five-channel TD-CEAS measurements of gaseous and particulate organic nitrates with NO
Wang, L., Chai, J., Gaubert, B., and Huang, Y.: A review of measurements and model simulations of atmospheric nitrous acid, Atmos. Environ., 347, 121094, https://doi.org/10.1016/j.atmosenv.2025.121094, 2025.
Wang, X., Wang, H., Xue, L., Wang, T., Wang, L., Gu, R., Wang, W., Tham, Y. J., Wang, Z., Yang, L., Chen, J., and Wang, W.: Observations of N2O5 and ClNO2 at a polluted urban surface site in North China: High N2O5 uptake coefficients and low ClNO2 product yields, Atmos. Environ., 156, 125–134, https://doi.org/10.1016/j.atmosenv.2017.02.035, 2017.
Wild, R. J., Edwards, P. M., Dube, W. P., Baumann, K., Edgerton, E. S., Quinn, P. K., Roberts, J. M., Rollins, A. W., Veres, P. R., Warneke, C., Williams, E. J., Yuan, B., and Brown, S. S.: A measurement of total reactive nitrogen, NOy, together with NO2, NO, and O3 via cavity ring-down spectroscopy, Environ. Sci. Technol., 48, 9609–9615, https://doi.org/10.1021/es501896w, 2014.
Wooldridge, P. J., Perring, A. E., Bertram, T. H., Flocke, F. M., Roberts, J. M., Singh, H. B., Huey, L. G., Thornton, J. A., Wolfe, G. M., Murphy, J. G., Fry, J. L., Rollins, A. W., LaFranchi, B. W., and Cohen, R. C.: Total Peroxy Nitrates (ΣPNs) in the atmosphere: the Thermal Dissociation-Laser Induced Fluorescence (TD-LIF) technique and comparisons to speciated PAN measurements, Atmos. Meas. Tech., 3, 593–607, https://doi.org/10.5194/amt-3-593-2010, 2010.
Wüst, L., Dewald, P., Türk, G. N. T. E., Lelieveld, J., and Crowley, J. N.: Influence of ambient NO and NO2 on the quantification of total peroxy nitrates (ΣPNs) and total alkyl nitrates (ΣANs) by thermal dissociation cavity ring-down spectroscopy (TD-CRDS), Atmos. Meas. Tech., 18, 1943–1959, https://doi.org/10.5194/amt-18-1943-2025, 2025.
Yu, K., Zhu, Q., Du, K., and Huang, X.-F.: Characterization of nighttime formation of particulate organic nitrates based on high-resolution aerosol mass spectrometry in an urban atmosphere in China, Atmos. Chem. Phys., 19, 5235–5249, https://doi.org/10.5194/acp-19-5235-2019, 2019.
Yu, X., Li, A. F., Ge, Y., Li, Y. M., Liao, K. Z., Huang, X. H., Li, J. J., and Yu, J. Z.: Simultaneous determination of aerosol inorganic and organic nitrogen by thermal evolution and chemiluminescence detection, Environ. Sci. Technol., 55, 11579–11589, https://doi.org/10.1021/acs.est.1c04876, 2021.
Zare, A., Romer, P. S., Nguyen, T., Keutsch, F. N., Skog, K., and Cohen, R. C.: A comprehensive organic nitrate chemistry: insights into the lifetime of atmospheric organic nitrates, Atmos. Chem. Phys., 18, 15419–15436, https://doi.org/10.5194/acp-18-15419-2018, 2018.
Zeng, L. W., Lyu, X. P., Guo, H., Zou, S. C., and Ling, Z. H.: Photochemical formation of C1–C5 Alkyl nitrates in suburban Hong Kong and over the South China Sea, Environ. Sci. Technol., 52, 5581–5589, https://doi.org/10.1021/acs.est.8b00256, 2018.
Zhang, G., Mu, Y., Liu, J., and Mellouki, A.: Direct and simultaneous determination of trace-level carbon tetrachloride, peroxyacetyl nitrate, and peroxypropionyl nitrate using gas chromatography-electron capture detection, J. Chromatogr. A, 1266, 110–115, https://doi.org/10.1016/j.chroma.2012.09.092, 2012.
Zhang, G., Mu, Y. J., Zhou, L. X., Zhang, C. L., Zhang, Y. Y., Liu, J. F., Fang, S. X., and Yao, B.: Summertime distributions of peroxyacetyl nitrate (PAN) and peroxypropionyl nitrate (PPN) in Beijing: Understanding the sources and major sink of PAN, Atmos. Environ., 103, 289–296, https://doi.org/10.1016/j.atmosenv.2014.12.035, 2015.
Zheng, W., Flocke, F. M., Tyndall, G. S., Swanson, A., Orlando, J. J., Roberts, J. M., Huey, L. G., and Tanner, D. J.: Characterization of a thermal decomposition chemical ionization mass spectrometer for the measurement of peroxy acyl nitrates (PANs) in the atmosphere, Atmos. Chem. Phys., 11, 6529–6547, https://doi.org/10.5194/acp-11-6529-2011, 2011.
Zhou, J., Zhao, W., Zhang, Y., Fang, B., Cheng, F., Xu, X., Ni, S., Zhang, W., Ye, C., Chen, W., and Venables, D. S.: Amplitude-modulated cavity-enhanced absorption spectroscopy with phase-sensitive detection: A new approach applied to the fast and sensitive detection of NO2, Anal. Chem., 94, 3368–3375, https://doi.org/10.1021/acs.analchem.1c05484, 2022.
Short summary
Organic nitrates influence ozone formation and fine particle pollution, yet measuring them in both gas and particle phases remains challenging. We developed an instrument using thermal dissociation with NO2 detector to quantify two organic nitrate classes in both phases. A correction-model corrects biases from nitrogen oxides. Field tests in Guangzhou showed continuous tracking of organic nitrate levels and phase distribution, a tool for studying reactive nitrogen in urban air.
Organic nitrates influence ozone formation and fine particle pollution, yet measuring them in...
