A novel synthesis of the N-13 labeled atmospheric trace gas peroxynitric acid

Bartels-Rausch, Thorsten; Ulrich, Thomas; Huthwelker, Thomas; Ammann, Markus

doi:10.1524/ract.2011.1830

Cited by 8 publications

(16 citation statements)

References 31 publications

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“…2. The relative amount of HONO (780 pptv) and HNO 4 (1000 pptv) observed in the synthetized mixture (prior heating) is typical for this synthesis (Bartels-Rausch et al, 2011). The experiment shows the response of the signals when the heating trap used to decompose HNO 4 is applied.…”

Section: Experiments Performed At Psi To Investigate a Possible Hno 4mentioning

confidence: 94%

“…A full characterization of the interference on HONO at various mixing ratios of HNO 4 in the presence or absence of other trace gases present at DC is beyond the scope of this paper. The interference of the LOPAP device was examined at PSI, where a gas-phase synthesis of HNO 4 has been developed by irradiating a mixture of NO 2 / H 2 O / CO / O 2 / N 2 at 172 nm (Bartels-Rausch et al, 2011). By-products of the synthesis are HONO, HNO 3 , and H 2 O 2 .…”

Section: Experiments Performed At Psi To Investigate a Possible Hno 4mentioning

confidence: 99%

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Large mixing ratios of atmospheric nitrous acid (HONO) at Concordia (East Antarctic Plateau) in summer: a strong source from surface snow?

et al. 2014

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Abstract. During the austral summer 2011/2012 atmospheric nitrous acid (HONO) was investigated for the second time at the Concordia site (75 • 06 S, 123 • 33 E), located on the East Antarctic Plateau, by deploying a long-path absorption photometer (LOPAP). Hourly mixing ratios of HONO measured in December 2011/January 2012 (35 ± 5.0 pptv) were similar to those measured in December 2010/January 2011 (30.4 ± 3.5 pptv). The large value of the HONO mixing ratio at the remote Concordia site suggests a local source of HONO in addition to weak production from oxidation of NO by the OH radical. Laboratory experiments demonstrate that surface snow removed from Concordia can produce gasphase HONO at mixing ratios half that of the NO x mixing ratio produced in the same experiment at typical temperatures encountered at Concordia in summer. Using these lab data and the emission flux of NO x from snow estimated from the vertical gradient of atmospheric concentrations measured during the campaign, a mean diurnal HONO snow emission ranging between 0.5 and 0.8 × 10 9 molecules cm −2 s −1 is calculated. Model calculations indicate that, in addition to around 1.2 pptv of HONO produced by the NO oxidation, these HONO snow emissions can only explain 6.5 to 10.5 pptv of HONO in the atmosphere at Concordia. To explain the difference between observed and simulated HONO mixing ratios, tests were done both in the field and at lab to explore the possibility that the presence of HNO 4 had biased the measurements of HONO.

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Section: Experiments Performed At Psi To Investigate a Possible Hno 4mentioning

confidence: 94%

Section: Experiments Performed At Psi To Investigate a Possible Hno 4mentioning

confidence: 99%

Large mixing ratios of atmospheric nitrous acid (HONO) at Concordia (East Antarctic Plateau) in summer: a strong source from surface snow?

et al. 2014

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“…The Xe excimer lamp has a coaxial geometry and consists of a tubular quartz cell which surrounds a quartz flow tube (outer diameter 10 mm) which is used as OH radical generator. Previous works (Bartels-Rausch et al, 2011) used this set up for HO 2 radical generation.…”

Section: Flow Tubementioning

confidence: 99%

Formation of highly oxygenated organic molecules from aromatic compounds

Molteni¹,

Bianchi²,

Klein³

et al. 2016

Preprint

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<p><strong>Abstract.</strong> Anthropogenic volatile organic compounds (AVOC) often dominate the urban atmosphere and consist to a large degree of aromatic hydrocarbons (ArHC), such as benzene, toluene, xylenes, and trimethylbenzenes, e.g. from handling and combustion of fuels. These compounds are important precursors for the formation of secondary organic aerosol. Despite their recognized importance as atmospheric reactants, the formation of highly oxygenated molecules (HOMs) in the gas phase leading to (extremely) low volatility compounds has not been studied in the past. Here we show that oxidation of aromatics with OH leads to a subsequent autoxidation chain reaction forming HOMs with an O&#8201;:&#8201;C ratio of up to 1.09. This is exemplified for five single-ring ArHC (benzene, toluene, o-/m-/p-xylene, mesitylene (1,3,5-trimethylbenzene) and ethylbenzene), as well as two conjugated polycyclic ArHC (naphthalene and biphenyl). We present the identified compounds, differences in the observed oxidation patterns and discuss mechanistic pathways. We hypothesize that AVOC may contribute substantially to new particle formation events that have been detected in urban areas.</p>

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“…Surface ozone was monitored simultaneously to HONO using UV absorption monitors (Thermo Electron Corporation model 49I) deployed at Concordia since 2007 (Legrand et al, 2009). Nitrogen oxides were determined by deploying a two-channel chemiluminescence detector (Bauguitte et al, 2012;Frey et al, 2013Frey et al, , 2014. The chemiluminescence detector measured NO in one channel and the sum of NO, and NO originating from the photolytic conversion of NO 2 in the other channel.…”

Section: Field Atmospheric Measurements and Snow Samplingsmentioning

confidence: 99%

Large mixing ratios of atmospheric nitrous acid (HONO) at Concordia (East Antarctic plateau) in summer: a strong source from surface snow?

Legrand¹,

Preunkert²,

Frey³

et al. 2014

Preprint

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Abstract. During the austral summer 2011/2012 atmospheric nitrous acid was investigated for the second time at the Concordia site (75°06' S, 123°33' E) located on the East Antarctic plateau by deploying a long path absorption photometer (LOPAP). Hourly mixing ratios of HONO measured in December 2011/January 2012 (35 ± 5.0 pptv) were similar to those measured in December 2010/January 2011 (30.4 ± 3.5 pptv). The large value of the HONO mixing ratio at the remote Concordia site suggests a local source of HONO in addition to weak production from oxidation of NO by the OH radical. Laboratory experiments demonstrate that surface snow removed from Concordia can produce gas phase HONO at mixing ratios half that of NOx mixing ratio produced in the same experiment at typical temperatures encountered at Concordia in summer. Using these lab data and the emission flux of NOx from snow estimated from the vertical gradient of atmospheric concentrations measured during the campaign, a mean diurnal HONO snow emission ranging between 0.5 and 0.8 × 109 molecules cm−2 s−1 is calculated. Model calculations indicate that, in addition to around 1.2 pptv of HONO produced by the NO oxidation, these HONO snow emissions can only explain 6.5 to 10.5 pptv of HONO in the atmosphere at Concordia. To explain the difference between observed and simulated HONO mixing ratios, tests were done both in the field and at lab to explore the possibility that the presence of HNO4 had biased the measurements of HONO.

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A novel synthesis of the N-13 labeled atmospheric trace gas peroxynitric acid

Cited by 8 publications

References 31 publications

Large mixing ratios of atmospheric nitrous acid (HONO) at Concordia (East Antarctic Plateau) in summer: a strong source from surface snow?

Large mixing ratios of atmospheric nitrous acid (HONO) at Concordia (East Antarctic Plateau) in summer: a strong source from surface snow?

Formation of highly oxygenated organic molecules from aromatic compounds

Large mixing ratios of atmospheric nitrous acid (HONO) at Concordia (East Antarctic plateau) in summer: a strong source from surface snow?

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