Acetone and acetonitrile in the tropical Indian Ocean boundary layer and free troposphere: Aircraft‐based intercomparison of AP‐CIMS and PTR‐MS measurements

Sprung, Detlev; Jost, C.; Reiner, Thomas; Hansel, Armin; Wisthaler, Armin

doi:10.1029/2000jd900599

Cited by 54 publications

(52 citation statements)

References 54 publications

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“…Conversely, generally good agreement has been observed between PTR-MS and GC methods and AP-CIMS (atmospheric pressure chemical ionization mass spectrometry) (slopes = 0.97-1.18, intercept = −0.28-0.06, R 2 = 0.77-0.96) (Fig. 3) (Sprung et al, 2001;Kaser et al, 2013;Wang et al, 2014;Kajos et al, 2015).…”

Section: Acetonementioning

confidence: 99%

“…Using the DNPH data for propanal and glyoxal, along with literature values of the PTR-MS response variables -branching ratios (Spanel et al, 1997;Stonner et al, 2016) and reaction rates ) -a correction was applied to the PTR-MS m/z 59 data (excluding the data of 16-24 April, N = 53) to subtract interference in the measurement of acetone due to the presence of propanal and glyoxal. This correction procedure is described in detail in the Supplement Sect.…”

Section: Acetonementioning

confidence: 99%

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Comparison of VOC measurements made by PTR-MS, adsorbent tubes–GC-FID-MS and DNPH derivatization–HPLC during the Sydney Particle Study, 2012: a contribution to the assessment of uncertainty in routine atmospheric VOC measurements

et al. 2018

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Abstract. Understanding uncertainty is essential for utilizing atmospheric volatile organic compound (VOC) measurements in robust ways to develop atmospheric science. This study describes an inter-comparison of the VOC data, and the derived uncertainty estimates, measured with three independent techniques (PTR-MS, proton-transfer-reaction mass spectrometry; GC-FID-MS, gas chromatography with flameionization and mass spectrometric detection; and DNPH-HPLC, 2,4-dinitrophenylhydrazine derivatization followed by analysis by high-performance liquid chromatography) during routine monitoring as part of the Sydney Particle Study (SPS) campaign in 2012. Benzene, toluene, C 8 aromatics, isoprene, formaldehyde and acetaldehyde were selected for the comparison, based on objective selection criteria from the available data. Bottom-up uncertainty analyses were undertaken for each compound and each measurement system. Top-down uncertainties were quantified via the intercomparisons. In all seven comparisons, the correlations between independent measurement techniques were high with R 2 values with a median of 0.92 (range 0.75-0.98) and small root mean square of the deviations (RMSD) of the observations from the regression line with a median of 0.11 (range 0.04-0.23 ppbv). These results give a high degree of confidence that for each comparison the response of the two independent techniques is dominated by the same constituents. The slope and intercept as determined by reduced major axis (RMA) regression gives a different story. The slopes varied considerably with a median of 1.25 and a range of 1.16-2.01. The intercepts varied with a median of 0.04 and a range of −0.03 to 0.31 ppbv. An ideal comparison would give a slope of 1.00 and an intercept of 0.Some sources of uncertainty that are poorly quantified by the bottom-up uncertainty analysis method were identified, including: contributions of non-target compounds to the measurement of the target compound for benzene, toluene and isoprene by PTR-MS as well as the under-reporting of formaldehyde, acetaldehyde and acetone by the DNPH technique. As well as these, this study has identified a specific interference of liquid water with acetone measurements by the DNPH technique.These relationships reported for Sydney 2012 were incorporated into a larger analysis with 61 similar published inter-comparison studies for the same compounds. Overall, for the light aromatics, isoprene and the C 1 -C 3 carbonyls, the uncertainty in a set of measurements varies by a factor of between 1.5 and 2. These uncertainties (∼ 50 %) are significantly higher than uncertainties estimated using standard propagation of error methods, which in this case were ∼ 22 % or less, and are the result of the presence of poorly understood or neglected processes that affect the measurement and its uncertainty. The uncertainties in VOC measurements identified here should be considered when assessing the reliability of VOC measurements from routine monitoring with individual, stand-alone instruments; when utilizing VOC da...

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Section: Acetonementioning

confidence: 99%

Section: Acetonementioning

confidence: 99%

Comparison of VOC measurements made by PTR-MS, adsorbent tubes–GC-FID-MS and DNPH derivatization–HPLC during the Sydney Particle Study, 2012: a contribution to the assessment of uncertainty in routine atmospheric VOC measurements

et al. 2018

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“…Carbon monoxide is measured on board the DC-8, P-3B and WP-3D by teams from NASA Langley (Diskin), NASA Ames (Podolske) and NOAA ESRL CSD (Holloway) research centers. Gas-phase measurements of acetonitrile were measured on board the DC-8 by the University of Innsbruck (Wisthaler et al) (Lindinger et al, 1998;Sprung et al, 2001) and aboard the WP-3D by a team from NOAA's ESRL CSD (de Gouw et al) (de Gouw and Warneke, 2007). Acetonitrile was not measured on board the NASA P-3B.…”

Section: Instrumentationmentioning

confidence: 99%

Absorbing aerosol in the troposphere of the Western Arctic during the 2008 ARCTAS/ARCPAC airborne field campaigns

et al. 2011

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Abstract. In the spring of 2008 NASA and NOAA funded the ARCTAS and ARCPAC field campaigns as contributions to POLARCAT, a core IPY activity. During the campaigns the NASA DC-8, P-3B and NOAA WP-3D aircraft conducted over 160 h of in-situ sampling between 0.1 and 12 km throughout the Western Arctic north of 55 • N (i.e. Alaska to Greenland). All aircraft were equipped with multiple wavelength measurements of aerosol optics, trace gas and aerosol chemistry measurements, as well as direct measurements of the aerosol size distributions and black carbon mass. Late April of 2008 proved to be exceptional in terms of Asian biomass burning emissions transported to the Western Arctic. Though these smoke plumes account for only 11-14 % of the samples within the Western Arctic domain, they account for 42-47 % of the total burden of black carbon. Dust was also commonly observed but only contributes to 4-12 % and 3-8 % of total light absorption at 470 and 530 nm wavelengths above 6 km. Below 6 km, light absorption by carbonaceous aerosol derived from urban/industrial and biomass burning emissions account for 97-99 % of total light absorption by aerosol. Stratifying the data to reduce the influence of dust allows us to determine mass absorption efficiencies for black carbon of 11.2±0.8, 9.5±0.6 and 7.4±0.7 m 2 g −1 at 470, 530 and 660 nm waveCorrespondence to: C. S. McNaughton (csmcnaug@hawaii.edu) lengths. These estimates are consistent with 35-80 % enhancements in 530 nm absorption due to clear or slightly absorbing coatings of pure black carbon particulate. Assuming a 1/λ wavelength dependence for BC absorption, and assuming that refractory aerosol (420 • C, τ = 0.1 s) in lowdust samples is dominated by brown carbon, we derive mass absorption efficiencies for brown carbon of 0.83±0.15 and 0.27±0.08 m 2 g −1 at 470 and 530 nm wavelengths. Estimates for the mass absorption efficiencies of Asian dust are 0.034 m 2 g −1 and 0.017 m 2 g −1 . However the absorption efficiency estimates for dust are highly uncertain due to the limitations imposed by PSAP instrument noise. In-situ ARC-TAS/ARCPAC measurements during the IPY provide valuable constraints for absorbing aerosol over the Western Arctic, species which are currently poorly simulated over a region that is critically under-sampled.

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“…Sprung et al (2001) describe an intercomparison between the acetone measurements using a CIMS and a PTR-MS instrument, which were deployed on the C130 aircraft during INDOEX. They found that the PTR-MS showed slightly higher acetone mixing ratios than the CIMS.…”

Section: Experiments and Instrumentationmentioning

confidence: 99%

On the relationship between acetone and carbon monoxide in different air masses

et al. 2003

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Abstract. Carbon monoxide and acetone measurements are presented for five aircraft measurement campaigns at midlatitudes, polar and tropical regions in the northern hemisphere. Throughout all campaigns, free tropospheric air masses, which were influenced by anthropogenic emissions, showed a similar linear relation between acetone and CO, with a slope of 21-25 ppt v acetone/ppb v CO. Measurements in the anthropogenically influenced marine boundary layer revealed a slope of 13-16 ppt v acetone/ppb v CO. The different slopes observed in the marine boundary layer and the free troposphere indicate that acetone is emitted by the ocean in relatively clean air masses and taken up by the ocean in polluted air masses. In the lowermost stratosphere, a good correlation between acetone and CO was observed as well, however, with a much smaller slope (∼5 ppt v acetone/ppb v CO) compared to the troposphere. This is caused by the longer photochemical lifetime of CO compared to acetone in the lower stratosphere, due to the increasing photolytic loss of acetone and the decreasing OH concentration with altitude. No significant correlation between acetone and CO was observed over the tropical rain forest due to the large direct and indirect biogenic emissions of acetone.The common slopes of the linear acetone-CO relation in various layers of the atmosphere, during five field experiments, makes them useful for model calculations. Often a single observation of the acetone-CO correlation, determined from stratospheric measurements, has been used in box model applications. This study shows that different slopes have to be considered for marine boundary layer, free tropospheric and stratospheric air masses, and that the acetone-CO relation cannot be used for air masses which are strongly influenced by biogenic emissions.Correspondence to: M. de Reus

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Acetone and acetonitrile in the tropical Indian Ocean boundary layer and free troposphere: Aircraft‐based intercomparison of AP‐CIMS and PTR‐MS measurements

Cited by 54 publications

References 54 publications

Comparison of VOC measurements made by PTR-MS, adsorbent tubes–GC-FID-MS and DNPH derivatization–HPLC during the Sydney Particle Study, 2012: a contribution to the assessment of uncertainty in routine atmospheric VOC measurements

Comparison of VOC measurements made by PTR-MS, adsorbent tubes–GC-FID-MS and DNPH derivatization–HPLC during the Sydney Particle Study, 2012: a contribution to the assessment of uncertainty in routine atmospheric VOC measurements

Absorbing aerosol in the troposphere of the Western Arctic during the 2008 ARCTAS/ARCPAC airborne field campaigns

On the relationship between acetone and carbon monoxide in different air masses

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