This is a dataset of elemental and oxidized mercury in the ambient atmosphere at latitude 40.143° N and longitude 109.469° W. This is the location of the Horsepool monitoring station in the Uinta Basin, Utah. We collected these measurements using a dual-channel atmospheric mercury speciation instrument, which is described by Lyman, S. N., Gratz, L. E., Dunham-Cheatham, S. M., Gustin, M. S., & Luippold, A. (2020). Improvements to the accuracy of atmospheric oxidized mercury measurements. Environmental Science & Technology, 54(21), 13379-13388.
Author ORCID Identifier
Seth Lyman https://orcid.org/0000-0001-8493-9522
NSF, Division of Atmospheric and Geospace Sciences (AGS)
Utah State University
NSF, Division of Atmospheric and Geospace Sciences (AGS) 1700722
Collaborative Research: Refining and Testing Methods for Identifying and Quantifying Gaseous Oxidized Mercury in Air
The instrument pulled air through a teflon-coated elutriator and particle impactor and then through a 6 m 1/4" PFA teflon tube that was heated to 120 degrees C. The air was then pulled either through a pyrolyzer that was heated to 650 degrees C, or through a series of two cation-exchange membranes. The pyrolyzer converted all mercury to elemental mercury, while the cation-exchange membranes captured oxidized mercury and only allowed elemental mercury to pass through. After passing through the membranes or pyrolyzer, the air was sampled for elemental mercury concentration by a Tekran 2537B analyzer. The difference between total mercury sampled through the pyrolyzer stream and elemental mercury sampled through the membrane stream was oxidized mercury. We measured total mercury for five minutes, then elemental mercury for five minutes, and then back again to total mercury. We calculated oxidized mercury for each ten-minute measurement set. We then averaged the measurements together for each one-hour period. Non-mercury data were collected as described in https://www.usu.edu/binghamresearch/files/reports/UBAQR-2019-AnnualReport_v3.pdf
Lyman, S. N., Gratz, L. E., Dunham-Cheatham, S. M., Gustin, M. S., & Luippold, A. (2020). Improvements to the accuracy of atmospheric oxidized mercury measurements. Environmental Science & Technology, 54(21), 13379-13388.
40.143° N 109.469° W
See ReadMe file.
This work is licensed under a Creative Commons Attribution 4.0 License.
Lyman, S. (2022). Elemental and Oxidized Mercury in the Atmosphere at Horsepool, Utah, January-July 2019 [Data set]. Utah State University. https://doi.org/10.26078/2ZTZ-5789
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