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Volume 10, issue 12 | Copyright
Atmos. Meas. Tech., 10, 5063-5073, 2017
https://doi.org/10.5194/amt-10-5063-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 22 Dec 2017

Research article | 22 Dec 2017

Improved methods for signal processing in measurements of mercury by Tekran® 2537A and 2537B instruments

Jesse L. Ambrose
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Subject: Gases | Technique: In Situ Measurement | Topic: Data Processing and Information Retrieval
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Cited articles
Ambrose, J.: Data Archive for: Improved methods for signal processing in measurements of mercury by Tekran® 2537A and 2537B instruments, Open Science Framework, https://doi.org/10.17605/OSF.IO/KGFYP, 2017.
Ambrose, J. L., Reidmiller, D. R., and Jaffe, D. A.: Causes of high O3 in the lower free troposphere over the Pacific Northwest as observed at the Mt. Bachelor Observatory, Atmos. Environ., 45, 5302–5315, https://doi.org/10.1016/j.atmosenv.2011.06.056, 2011.
Ambrose, J. L., Lyman, S. N., Huang, J., Gustin, M. S., and Jaffe, D. A.: Fast time resolution oxidized mercury measurements during the Reno Atmospheric Mercury Intercomparison Experiment (RAMIX), Environ. Sci. Technol., 47, 7285–7294, https://doi.org/10.1021/es303916v, 2013.
Ambrose, J. L., Gratz, L. E., Jaffe, D. A., Campos, T., Flocke, F. M., Knapp, D. J., Stechman, D. M., Stell, M., Weinheimer, A. J., Cantrell, C. A., and Mauldin III, R. L.: Mercury emission ratios from coal-fired power plants in the southeastern United States during NOMADSS, Environ. Sci. Technol., 49, 10389–10397, https://doi.org/10.1021/acs.est.5b01755, 2015.
Cole, A. S., Steffen, A., Eckley, C. S., Narayan, J., Pilote, M., Tordon, R., Graydon, J. A., St. Louis, V. L., Xu, X., and Branfireun, B. A.: A Survey of Mercury in Air and Precipitation across Canada: Patterns and Trends, Atmosphere, 5, 635–668, https://doi.org/10.3390/atmos5030635, 2014.
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Short summary
Scientific understanding of environmental Hg cycling is limited by analytical uncertainties. To better characterize analytical uncertainty associated with Hg measurements made with the Tekran® 2537 instrument, I developed new software-based methods for offline processing of the raw instrumental data. I demonstrate significant uncertainty associated with the Tekran® method. By comparison, my methods improve measurement accuracy and the Hg detection limit by as much as 95 % and 88 %, respectively.
Scientific understanding of environmental Hg cycling is limited by analytical uncertainties. To...
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