Measurements of atmospheric nitrous acid and nitric acid

Huang, Gu; Zhou, Xianliang; Deng, Guohong; Qiao, Huancheng; Civerolo, Kevin

doi:10.1016/s1352-2310(02)00170-x

Cited by 106 publications

(105 citation statements)

References 27 publications

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“…Losses may have occurred along the walls of the inlet sample air tubing and any water droplets accumulated in the inlet line may have caused further losses. Furthermore, comparison of nitric acid measurements made at other locations to this study indicated that the GPIC concentrations were lower than those typically observed (Hering et al, 1988;Boring et al, 2002;Huang et al, 2002;Fischer et al, 2006;Lin et al, 2006;Morino et al, 2006;Ullah et al, 2006).…”

Section: Gpic Comparison With Naps Denuder Measurementssupporting

confidence: 49%

Evaluation and application of a semi-continuous chemical characterization system for water soluble inorganic PM<sub>2.5</sub> and associated precursor gases

et al. 2009

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Abstract. Water soluble inorganic particles components (Cl) and concentrations of their associated precursor gases (HCl, SO 2 , HNO 3 , NH 3 ) were semi-continuously measured using the Dionex Gas Particle Ion Chromatography (GPIC) system. Sampling was conducted adjacent to a high traffic street in downtown Toronto, Canada from June 2006 to March 2007. This study evaluated the precision and accuracy of field sampling measurements with the GPIC both relative to filter based measurements and other co-located semi-continuous instruments (R&P 8400N Nitrate Monitor, API Fluorescent SO 2 Gas Analyzer, and Aerodyne C-ToF-AMS). High temporal resolution PM 2.5 mass reconstruction is presented by combining GPIC measured inorganic species concentrations and Sunset Laboratory OCEC Analyzer determined organics concentrations. Field sampling results were also examined for seasonal and diurnal variations. HNO 3 and particulate nitrate exhibited diurnal variation and strong partitioning to the gas phase was observed during the summer. Ammonia and particulate ammonium also demonstrated seasonal differences in their diurnal profiles. However, particulate sulphate and SO 2 showed no diurnal variation regardless of season suggesting dominant transport from regional sources throughout the year.

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Section: Gpic Comparison With Naps Denuder Measurementssupporting

confidence: 49%

Evaluation and application of a semi-continuous chemical characterization system for water soluble inorganic PM<sub>2.5</sub> and associated precursor gases

et al. 2009

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“…Detailed descriptions of the sampling site are given in Carroll et al [2001]. A 2-channel HONO measurement system [Zhou et al, 1999;Huang et al, 2002] was deployed. The method was based on aqueous-phase scrubbing of HONO using a coil sampler, followed by derivatization of scrubbed nitrite into a highly light-absorbing azo dye and HPLC analysis of the derivative with a UV-Vis detector.…”

Section: Methodsmentioning

confidence: 99%

Photochemical production of nitrous acid on glass sample manifold surface

Zhou

Huang

et al. 2002

Geophysical Research Letters

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124

134

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[1] Significant production of HONO was observed on glass sample manifold wall surface when exposed to sunlight during the PROPHET 2000 summer measurement intensive. It is hypothesized that the artifact HONO was produced by photolysis of adsorbed nitric acid/nitrate on the manifold wall surfaces followed by the subsequent reaction of produced NO 2 and adsorbed H 2 O on surface. This observation suggests against the use of an unshielded glass manifold as a sampling inlet for the measurement of atmospheric HONO. It may also have some implications in interpreting field NO x data measured using similar glass inlet manifolds, especially from the clean remote environments where NO x is low and HNO 3 is a major fraction of NO y .

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“…Aerosols greater than 1 μm have been reported not to transmit as effectively through some systems [Huang et al, 2002], with a greater fraction of the total undergoing collection in the HONO (g) measurement channel as particle size increases. Interferences in field observations have been reported for fog events, where partitioned HONO (g) was credited with producing an artifact signal [Sörgel et al, 2011a].…”

Section: Intercomparison Of Hono (G) Measurements Between Aim-ic and mentioning

confidence: 99%

Evidence for a nitrous acid (HONO) reservoir at the ground surface in Bakersfield, CA, during CalNex 2010

et al. 2014

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Measurements of HONO (g) were validated to be free of known interferences for wet chemical instrumentation. The accumulation of nitrite into particulate matter was found to be enhanced when gaseous mixing ratios of HONO (g) were highest. Reactive uptake of HONO (g) on to lofted dust and the ground surface, forming a reservoir, is a potential mechanism to explain these observations. The AIM-IC HONO (g) measurements were parameterized in a chemical model to calculate the ground surface daytime HONO (g) source strength at 4.5 m above the surface, found to be on the order of 1.27 ppb h À1, to determine the relative importance of a surface reservoir. If all deposited nighttime HONO (g) is reemitted the following day, up to 30% of the daytime HONO (g) source at CalNex-SJV may be accounted for. The observations of HONO (g) and NO 2 À (p) in Bakersfield, during CalNex, suggest a surface sink and source of HONO (g) . Extension of currently accepted unknown daytime HONO (g) source reactions to include a potential surface HONO (g) reservoir should therefore be sound, but quantitation of the relative contributions of each surface source toward daytime HONO (g) production remains to be resolved.

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Measurements of atmospheric nitrous acid and nitric acid

Cited by 106 publications

References 27 publications

Evaluation and application of a semi-continuous chemical characterization system for water soluble inorganic PM<sub>2.5</sub> and associated precursor gases

Evaluation and application of a semi-continuous chemical characterization system for water soluble inorganic PM<sub>2.5</sub> and associated precursor gases

Photochemical production of nitrous acid on glass sample manifold surface

Evidence for a nitrous acid (HONO) reservoir at the ground surface in Bakersfield, CA, during CalNex 2010

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Measurements of atmospheric nitrous acid and nitric acid

Cited by 106 publications

References 27 publications

Evaluation and application of a semi-continuous chemical characterization system for water soluble inorganic PM&lt;sub&gt;2.5&lt;/sub&gt; and associated precursor gases

Evaluation and application of a semi-continuous chemical characterization system for water soluble inorganic PM&lt;sub&gt;2.5&lt;/sub&gt; and associated precursor gases

Photochemical production of nitrous acid on glass sample manifold surface

Evidence for a nitrous acid (HONO) reservoir at the ground surface in Bakersfield, CA, during CalNex 2010

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Evaluation and application of a semi-continuous chemical characterization system for water soluble inorganic PM<sub>2.5</sub> and associated precursor gases

Evaluation and application of a semi-continuous chemical characterization system for water soluble inorganic PM<sub>2.5</sub> and associated precursor gases