The first airborne comparison of N<sub>2</sub>O<sub>5</sub> measurements over the UK using a CIMS and BBCEAS during the RONOCO campaign

Breton, Michael Le; Bacak, Asan; Muller, Jennifer; Bannan, Thomas J.; Kennedy, O. J.; Ouyang, Bin; Xiao, Peng; Bauguitte, Stéphane; Shallcross, Dudley E.; Jones, R. L.; Daniels, M. J. S.; Ball, S. M.; Percival, Carl J.

doi:10.1039/c4ay02273d

Cited by 31 publications

(41 citation statements)

References 56 publications

(71 reference statements)

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“…Le Breton et al . [] illustrated the reliability of this method after intercomparison with the broadband cavity enhanced absorption spectrometer (BBCEAS). Wang et al .…”

Section: Methodsmentioning

confidence: 68%

“…This relative calibration has been successfully utilized by Le Breton et al . [] for N 2 O 5 . It is assumed that the ratio between formic acid and ClNO 2 sensitivity remains a constant throughout.…”

Section: Methodsmentioning

confidence: 82%

“…Detailed description of which can be found in Le Breton et al . []. There have been reported instances where NO 3 is sensitive on the NO x analyzer, thus influencing the concentrations of N 2 O 5 that are reported in this study.…”

Section: Methodsmentioning

confidence: 97%

“…The ion molecule chemistry using iodide ions (I − ) to detect N 2 O 5 as NO 3 − ( m / z = 62) has been described in detail by Le Breton et al . [] and was also employed for measurements of N 2 O 5 in this study. Le Breton et al .…”

Section: Methodsmentioning

confidence: 99%

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The first UK measurements of nitryl chloride using a chemical ionization mass spectrometer in central London in the summer of 2012, and an investigation of the role of Cl atom oxidation

et al. 2015

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The first nitryl chloride (ClNO 2 ) measurements in the UK were made during the summer 2012 ClearfLo campaign with a chemical ionization mass spectrometer, utilizing an I À ionization scheme.Concentrations of ClNO 2 exceeded detectable limits (11 ppt) every night with a maximum concentration of 724 ppt. A diurnal profile of ClNO 2 peaking between 4 and 5 A.M., decreasing directly after sunrise, was observed. Concentrations of ClNO 2 above the detection limit are generally observed between 8 P.M. and 11 A.M. Different ratios of the production of ClNO 2 :N 2 O 5 were observed throughout with both positive and negative correlations between the two species being reported. The photolysis of ClNO 2 and a box model utilizing the Master Chemical Mechanism modified to include chlorine chemistry was used to calculate Cl atom concentrations. Simultaneous measurements of hydroxyl radicals (OH) using low pressure laser-induced fluorescence and ozone enabled the relative importance of the oxidation of three groups of measured VOCs (alkanes, alkenes, and alkynes) by OH radicals, Cl atoms, and O 3 to be compared. For the day with the maximum calculated Cl atom concentration, Cl atoms in the early morning were the dominant oxidant for alkanes and, over the entire day, contributed 15%, 3%, and 26% toward the oxidation of alkanes, alkenes, and alkynes, respectively.

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“…Le Breton et al . [] illustrated the reliability of this method after intercomparison with the broadband cavity enhanced absorption spectrometer (BBCEAS). Wang et al .…”

Section: Methodsmentioning

confidence: 68%

Section: Methodsmentioning

confidence: 82%

Section: Methodsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

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The first UK measurements of nitryl chloride using a chemical ionization mass spectrometer in central London in the summer of 2012, and an investigation of the role of Cl atom oxidation

et al. 2015

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“…In the morning, following overnight accumulation of ClNO2, photochemical reactions take place to produce Cl and NO2. N2O5 and ClNO2 processing an iteractions with nitrate chemistry has been previously studied in the UK (Le Breton et al, 2014a;Bannan et al, 2015). Figure 9 shows N2O5, ClNO2 and O3 concentrations increasing when NO and NO2 concentrations decrease.…”

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confidence: 99%

Simultaneous Aerosol Mass Spectrometry and Chemical Ionisation Mass Spectrometry measurements during a biomass burning event in the UK: Insights into nitrate chemistry

Reyes-Villegas¹,

Priestley²,

Ting³

et al. 2017

Preprint

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Abstract. Over the past decade, there has been an increasing interest in short-term events that negatively affect air quality such as bonfires and fireworks. High aerosol and gas concentrations generated from public bonfires/fireworks were measured in order to understand the night-time chemical processes and their atmospheric implications. Nitrate chemistry was observed during the bonfire night with nitrogen containing compounds in both gas and aerosol phase and further N2O5 and Aethalometer. This hypothesis was tested by doing multilinear regressions between babs_470wb and BBOA, sPON_ME2 and pPON_ME2. Our results suggest that sPON_ME2 does not absorb light at 470 nm while pPON_ME2 and LVOOA absorb light at 470 nm over that of black carbon. This may inform black carbon (BC) source apportionment studies fromAethalometer measurements, through investigation of the brown carbon contribution to babs_470wb.

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Ground and Airborne U.K. Measurements of Nitryl Chloride: An Investigation of the Role of Cl Atom Oxidation at Weybourne Atmospheric Observatory

et al. 2017

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Nitryl chloride (ClNO2) measurements from the Weybourne Atmospheric Observatory (WAO) are reported from March to April 2013 using a quadruple chemical ionization mass spectrometer with the I− ionization scheme. WAO is a rural coastal site with generally low NOx concentrations, a type of location poorly studied for ClNO2 production. Concentrations of ClNO2 exceeded that of the limit of detection (0.8 ppt) on each night of the campaign, as did concentrations of N2O5, which was also measured simultaneously with the Cambridge Broadband Cavity Enhanced Absorption Spectrometer. A peak concentration of 65 ppt of ClNO2 is reported here. Vertical profiles of ClNO2 from early‐ to middle‐morning flights in close proximity to WAO are also reported, showing elevated concentrations at low altitude. The photolysis of observed ClNO2 and a box model utilizing the Master Chemical Mechanism modified to include chlorine chemistry was used to calculate Cl atom concentrations. This model utilized numerous VOCs from the second Tropospheric Organic Chemistry project in 2004, at the same location and time of year. From this the relative importance of the oxidation of three groups of measured VOCs (alkanes, alkenes, and alkynes) by OH radicals, Cl atoms, and O3 is compared. Cl atom oxidation was deemed generally insignificant at this time and location for total oxidation due to the much lower concentration of ClNO2 observed, even following the night of greatest ClNO2 production.

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The first airborne comparison of N₂O₅ measurements over the UK using a CIMS and BBCEAS during the RONOCO campaign

Cited by 31 publications

References 56 publications

The first UK measurements of nitryl chloride using a chemical ionization mass spectrometer in central London in the summer of 2012, and an investigation of the role of Cl atom oxidation

The first UK measurements of nitryl chloride using a chemical ionization mass spectrometer in central London in the summer of 2012, and an investigation of the role of Cl atom oxidation

Simultaneous Aerosol Mass Spectrometry and Chemical Ionisation Mass Spectrometry measurements during a biomass burning event in the UK: Insights into nitrate chemistry

Ground and Airborne U.K. Measurements of Nitryl Chloride: An Investigation of the Role of Cl Atom Oxidation at Weybourne Atmospheric Observatory

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The first airborne comparison of N2O5 measurements over the UK using a CIMS and BBCEAS during the RONOCO campaign

Cited by 31 publications

References 56 publications

The first UK measurements of nitryl chloride using a chemical ionization mass spectrometer in central London in the summer of 2012, and an investigation of the role of Cl atom oxidation

The first UK measurements of nitryl chloride using a chemical ionization mass spectrometer in central London in the summer of 2012, and an investigation of the role of Cl atom oxidation

Simultaneous Aerosol Mass Spectrometry and Chemical Ionisation Mass Spectrometry measurements during a biomass burning event in the UK: Insights into nitrate chemistry

Ground and Airborne U.K. Measurements of Nitryl Chloride: An Investigation of the Role of Cl Atom Oxidation at Weybourne Atmospheric Observatory

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The first airborne comparison of N₂O₅ measurements over the UK using a CIMS and BBCEAS during the RONOCO campaign