Articles | Volume 10, issue 10
https://doi.org/10.5194/amt-10-3893-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/amt-10-3893-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
24 Oct 2017
Research article |
| 24 Oct 2017
Chromatography related performance of the Monitor for AeRosols and GAses in ambient air (MARGA): laboratory and field-based evaluation
Xi Chen
National Risk Management Research Laboratory, Office of Research and
Development, US Environmental Protection Agency, Research Triangle Park,
North Carolina, 27711, USA
John T. Walker
CORRESPONDING AUTHOR
National Risk Management Research Laboratory, Office of Research and
Development, US Environmental Protection Agency, Research Triangle Park,
North Carolina, 27711, USA
Chris Geron
National Risk Management Research Laboratory, Office of Research and
Development, US Environmental Protection Agency, Research Triangle Park,
North Carolina, 27711, USA
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31 citations as recorded by crossref.
- Spatial Heterogeneity of Ammonia Fluxes in a Deciduous Forest and Adjacent Grassland X. Guo et al. 10.2139/ssrn.4067260
- Development, characterization, and application of an improved online reactive oxygen species analyzer based on the Monitor for AeRosols and Gases in ambient Air (MARGA) J. Wu et al. 10.5194/amt-15-2623-2022
- Spatial heterogeneity of ammonia fluxes in a deciduous forest and adjacent grassland X. Guo et al. 10.1016/j.agrformet.2022.109128
- Aerosol liquid water content of PM2.5 and its influencing factors in Beijing, China J. Su et al. 10.1016/j.scitotenv.2022.156342
- Aerosol characteristics and types in the marine environments surrounding the East Mediterranean - Middle East (EMME) region during the AQABA campaign D. Kaskaoutis et al. 10.1016/j.atmosenv.2023.119633
- Characteristics of Concentrations and Water-Soluble Ions in PM2.5 in Xinjiang Province, Northwest China Based on Super Station Observation L. Xinchun et al. 10.1007/s13143-025-00394-8
- Development of an online-coupled MARGA upgrade for the 2 h interval quantification of low-molecular-weight organic acids in the gas and particle phases B. Stieger et al. 10.5194/amt-12-281-2019
- Elucidate the formation mechanism of particulate nitrate based on direct radical observations in the Yangtze River Delta summer 2019 T. Zhai et al. 10.5194/acp-23-2379-2023
- Measurement report: Elevated atmospheric ammonia may promote particle pH and HONO formation – insights from the COVID-19 pandemic X. Zhang et al. 10.5194/acp-24-9885-2024
- Machine learning revealing key factors influencing HONO chemistry in Beijing during heating and non-heating periods W. Zhang et al. 10.1016/j.atmosres.2023.107130
- Insights into measurements of water-soluble ions in PM2.5 and their gaseous precursors in Beijing J. Su et al. 10.1016/j.jes.2020.08.031
- High-Resolution Measurements of SO2, HNO3 and HCl at the Urban Environment of Athens, Greece: Levels, Variability and Gas to Particle Partitioning E. Liakakou et al. 10.3390/atmos13020218
- Advantages and limitations of the analytical methods currently employed for the assessment of inorganic pollutants in indoor and outdoor air M. Ródenas et al. 10.1016/j.trac.2024.118034
- Quantification and evaluation of atmospheric ammonia emissions with different methods: a case study for the Yangtze River Delta region, China Y. Zhao et al. 10.5194/acp-20-4275-2020
- Haze caused by NO oxidation under restricted residential and industrial activities in a mega city in the south of North China Plain Q. Ma et al. 10.1016/j.chemosphere.2022.135489
- Atmospheric deposition of reactive nitrogen to a deciduous forest in the southern Appalachian Mountains J. Walker et al. 10.5194/bg-20-971-2023
- The potentials of uncertainty analysis and Bayesian optimization in HONO source modeling diagnosis and improvement J. Zhang et al. 10.1016/j.envres.2025.121494
- Dynamic ammonia exchange within a mixed deciduous forest canopy in the Southern Appalachians R. Saylor et al. 10.1016/j.ecolmodel.2024.111007
- Aerosol pH and its driving factors in Beijing J. Ding et al. 10.5194/acp-19-7939-2019
- Concurrent measurements of atmospheric ammonia concentrations in the megacities of Beijing and Shanghai by using cavity ring-down spectroscopy Q. Sun et al. 10.1016/j.atmosenv.2023.119848
- Existence of hydroxymethanesulfonate (HMS) during spring haze and sandstorm events in Beijing: Implications for a heterogeneous formation pathway on mineral aerosols Y. Xu et al. 10.1016/j.envpol.2024.125483
- Sources of gaseous NH3 in urban Beijing from parallel sampling of NH3 and NH4+, their nitrogen isotope measurement and modeling N. Bhattarai et al. 10.1016/j.scitotenv.2020.141361
- The Variation in Chemical Composition and Source Apportionment of PM2.5 before, during, and after COVID-19 Restrictions in Zhengzhou, China J. Huang et al. 10.3390/toxics12010081
- Concurrent measurements of nitrate at urban and suburban sites identify local nitrate formation as a driver for urban episodic PM2.5 pollution J. Li et al. 10.1016/j.scitotenv.2023.165351
- The potential of high temporal resolution automatic measurements of PM2.5 composition as an alternative to the filter-based manual method used in routine monitoring M. Twigg et al. 10.1016/j.atmosenv.2023.120148
- Tracer-based characterization of source variations of PM2.5 and organic carbon in Shanghai influenced by the COVID-19 lockdown S. Zhu et al. 10.1039/D0FD00091D
- Understanding of enhanced nitrate in fine particles at agricultural sites in summer with high ammonia level J. Kim et al. 10.1016/j.envpol.2024.125596
- Characteristics and Sources of Water-Soluble Inorganic Ions in PM2.5 in Urban Nanjing, China Q. Guo et al. 10.3390/atmos14010135
- Practical approach for an easy determination of the limit of detection and uncertainty budget associated with on-line measurements of gas and aerosols by ion chromatography P. Espina-Martin et al. 10.1016/j.atmosenv.2022.119285
- Investigation of sources and formation mechanisms of fine particles and organic aerosols in cold season in Fenhe Plain, China Y. Li et al. 10.1016/j.atmosres.2022.106018
- Long-Term (2017–2020) Aerosol Optical Depth Observations in Hohhot City in Mongolian Plateau and the Impacts from Different Types of Aerosol Y. Ma et al. 10.3390/atmos13050737
Latest update: 07 Jul 2025
Short summary
The MARGA instrument is a powerful research tool for investigating atmospheric chemistry and the exchange of gases and particles between the atmosphere and biosphere. Our study examines the operating characteristics of the instrument with a focus on the software used to calculate air concentrations. We show that more accurate measurements may be obtained by calibrating the instrument with a range of standards in addition to the single internal standard used in online concentration calculations.
The MARGA instrument is a powerful research tool for investigating atmospheric chemistry and the...
