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Airborne Hydrogen Cyanide Measurements Using a Chemical Ionisation Mass Spectrometer for the Plume Identification of Biomass Burning Forest Fires : Volume 13, Issue 18 (16/09/2013)

By Le Breton, M.

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Book Id: WPLBN0003989827
Format Type: PDF Article :
File Size: Pages 16
Reproduction Date: 2015

Title: Airborne Hydrogen Cyanide Measurements Using a Chemical Ionisation Mass Spectrometer for the Plume Identification of Biomass Burning Forest Fires : Volume 13, Issue 18 (16/09/2013)  
Author: Le Breton, M.
Volume: Vol. 13, Issue 18
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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O'shea, S. J., Lewis, A. C., Parrington, M., A. Mulle, J. B., R. Ashfol, M. N., Bacak, A.,...Batt, R. (2013). Airborne Hydrogen Cyanide Measurements Using a Chemical Ionisation Mass Spectrometer for the Plume Identification of Biomass Burning Forest Fires : Volume 13, Issue 18 (16/09/2013). Retrieved from

Description: The Centre for Atmospheric Science, School of Earth, Atmospheric and Environmental Sciences, University of Manchester, Simon Building, Brunswick Street, Manchester, M13 9PL, UK. A chemical ionisation mass spectrometer (CIMS) was developed for measuring hydrogen cyanide (HCN) from biomass burning events in Canada using I reagent ions on board the FAAM BAe-146 research aircraft during the BORTAS campaign in 2011. The ionisation scheme enabled highly sensitive measurements at 1 Hz frequency through biomass burning plumes in the troposphere.

A strong correlation between the HCN, carbon monoxide (CO) and acetonitrile (CH3CN) was observed, indicating the potential of HCN as a biomass burning (BB) marker. A plume was defined as being 6 standard deviations above background for the flights. This method was compared with a number of alternative plume-defining techniques employing CO and CH3CN measurements. The 6-sigma technique produced the highest R2 values for correlations with CO. A normalised excess mixing ratio (NEMR) of 3.68 ± 0.149 pptv ppbv−1 was calculated, which is within the range quoted in previous research (Hornbrook et al., 2011). The global tropospheric model STOCHEM-CRI incorporated both the observed ratio and extreme ratios derived from other studies to generate global emission totals of HCN via biomass burning. Using the ratio derived from this work, the emission total for HCN from BB was 0.92 Tg (N) yr−1.

Airborne hydrogen cyanide measurements using a chemical ionisation mass spectrometer for the plume identification of biomass burning forest fires

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