Journal cover Journal topic
Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 3.248 IF 3.248
  • IF 5-year value: 3.650 IF 5-year
    3.650
  • CiteScore value: 3.37 CiteScore
    3.37
  • SNIP value: 1.253 SNIP 1.253
  • IPP value: 3.29 IPP 3.29
  • SJR value: 1.869 SJR 1.869
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 60 Scimago H
    index 60
  • h5-index value: 47 h5-index 47
Volume 9, issue 5 | Copyright
Atmos. Meas. Tech., 9, 2195-2205, 2016
https://doi.org/10.5194/amt-9-2195-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 18 May 2016

Research article | 18 May 2016

Detection and quantification of gas-phase oxidized mercury compounds by GC/MS

Colleen P. Jones1, Seth N. Lyman1, Daniel A. Jaffe2, Tanner Allen1, and Trevor L. O'Neil1 Colleen P. Jones et al.
  • 1Bingham Research Center, Utah State University, Vernal, UT 84078, USA
  • 2University of Washington-Bothell, Bothell, WA 98011, USA

Abstract. Most mercury pollution is emitted to the atmosphere, and the location and bioavailability of deposited mercury largely depends on poorly understood atmospheric chemical reactions that convert elemental mercury into oxidized mercury compounds. Current measurement methods do not speciate oxidized mercury, leading to uncertainty about which mercury compounds exist in the atmosphere and how oxidized mercury is formed. We have developed a gas chromatography/mass spectrometry (GC-MS)-based system for identification and quantification of atmospheric oxidized mercury compounds. The system consists of an ambient air collection device, a thermal desorption module, a cryofocusing system, a gas chromatograph, and an ultra-sensitive mass spectrometer. It was able to separate and identify mercury halides with detection limits low enough for ambient air collection (90pg), but an improved ambient air collection device is needed. The GC/MS system was unable to quantify HgO or Hg(NO3)2, and data collected cast doubt upon the existence of HgO in the gas phase.

Publications Copernicus
Download
Short summary
Current measurement methods do not provide information about the speciation of oxidized mercury compounds in the atmosphere, leading to uncertainty about which mercury compounds exist and how oxidized mercury is formed. We have developed a gas chromatography/mass spectrometry-based system for identification of oxidized mercury compounds. We discuss the main features and performance of this system.
Current measurement methods do not provide information about the speciation of oxidized mercury...
Citation
Share