Articles | Volume 7, issue 12
https://doi.org/10.5194/amt-7-4251-2014
https://doi.org/10.5194/amt-7-4251-2014
Research article
 | 
08 Dec 2014
Research article |  | 08 Dec 2014

Deployment of a sequential two-photon laser-induced fluorescence sensor for the detection of gaseous elemental mercury at ambient levels: fast, specific, ultrasensitive detection with parts-per-quadrillion sensitivity

D. Bauer, S. Everhart, J. Remeika, C. Tatum Ernest, and A. J. Hynes

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Revised manuscript not accepted

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Cited articles

Bauer, D., Campuzano-Jost, P., and Hynes, A. J.: Rapid, ultra-sensitive detection of gas phase elemental mercury under atmospheric conditions using sequential two-photon laser induced fluorescence, J. Environ. Monitor., 4, 339–343, 2002.
Bauer, D., D'Ottone, L., Campuzano-Jost, P., and Hynes, A. J.: Gas Phase Elemental Mercury: A Comparison of LIF Detection Techniques and Study of the Kinetics of Reaction with the Hydroxyl Radical, J. Photochem. Photobiol. A, 157, 247–256, https://doi.org/10.1016/S1010-6030(03)00065-0, 2003.
Breckenridge, W. H. and Umemoto, H.: Collisional Quenching of Electronically Excited Metal Atoms, in Advances in Chemical Physics: Dynamics of the Excited State, Volume 50, edited by: Lawley, K. P., John Wiley & Sons, Inc., Hoboken, NJ, USA, https://doi.org/10.1002/9780470142745.ch5, 2007.
Creasey, D. J., Heard, D. E., and Lee, J. D.: Absorption cross-section measurements of water vapour and oxygen at 185 nm. Implications for the calibration of field instruments to measure OH, HO2 and RO2 radicals, Geophys. Res. Lett., 27, 1651, https://doi.org/10.1029/1999GL011014, 2000.
Deech, J. S., Pitre, J., and Krause, L.: Quenching and Depolarization of Mercury Resonance, Can. J. Phys., 49, 1976–1981, 1971.
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Short summary
An understanding of the biogeochemical cycling of mercury is an important health issue. Exposure to mercury is primarily through fish consumption. The typical background concentration of Hg(0) is ~200 ppq; hence atmospheric measurements represent a significant challenge in ultratrace analytical chemistry. We developed a laser-based sensor for detection of gas-phase elemental mercury, Hg(0), that is capable of fast in-situ measurements at ambient levels and can also measure oxidized mercury.