Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 9, issue 6
Articles | Volume 9, issue 6
https://doi.org/10.5194/amt-9-2669-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/amt-9-2669-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 9, issue 6
Research article
 | 
24 Jun 2016
Research article |  | 24 Jun 2016

Water vapor inhibits hydrogen sulfide detection in pulsed fluorescence sulfur monitors

Anders B. Bluhme, Jonas L. Ingemar, Carl Meusinger, and Matthew S. Johnson

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Short summary
Hydrogen sulfide (H2S) is a malodorous, very poisonous, and flammable gas. It can be detected as SO2 using fluorescence after conversion using a hot catalyst. This technique is well established and as such also recommended by authorities such as the EPA. Our paper describes how at a relative humidity as low as 5 %, significant amounts of H2S pass the instrument undetected. At ambient levels of relative humidity, up to 1/3 of all H2S passes the instrument unnoticed.
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