Measurement of Ambient, Interstitial, and Residual Aerosol Particles on a Mountaintop Site in Central Sweden using an Aerosol Mass Spectrometer and a CVI

Drewnick, Frank; Schneider, Johannes; Hings, Silke S.; Hock, N.; Noone, Kevin J.; Targino, Admir Créso; Weimer, S.; Borrmann, Stephan

doi:10.1007/s10874-006-9036-8

Cited by 56 publications

(82 citation statements)

References 25 publications

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“…Although the in-cloud addition of sulfate can be produced from aqueous Fe-catalyzed or oxidation by H 2 O 2 /O 3 reactions (Harris et al, 2014), sulfate abundance was found in the Fe cloud residues relative to nonactivated particles, but no enhancement relative to ambient particles was found. Previous studies also showed that the mass or NF of sulfate-containing particles in the cloud residues changed between ambient and nonactivated particles (Drewnick et al, 2007;Twohy and Anderson, 2008;Schneider et al, 2017). However, the reason for these changes remains unclear.…”

Section: Comparison Of Cloud Residues With Ambient and Nonactivated Pmentioning

confidence: 97%

“…These studies were mainly conducted at sites in North America including Wyoming (Pratt et al, 2010a), Ohio (Hayden et al, 2008), Oklahoma (Berg et al, 2009), Florida Twohy et al, 2005) and California (Coggon et al, 2014); in Europe including Schmücke (Roth et al, 2016;Schneider et al, 2017), Jungfraujoch (Kamphus et al, 2010), Åresku-tan (Drewnick et al, 2007) and Scandinavia (Targino et al, 2006); in the Arctic (Zelenyuk et al, 2010); in Central America (Cziczo et al, 2013); in western Africa (Matsuki et al, 2010); and in marine areas (Twohy and Anderson, 2008;Twohy et al, 2009;Shingler et al, 2012).…”

Section: Q Lin Et Al: a Ground-based Counterflow Virtual Impactor Cmentioning

confidence: 99%

“…Moreover, after activation, uptake of gas-phase HNO 3 would increase nitrate level in the cloud residues (Schneider et al, 2017). The nitrate in the cloud residues was thought to be in the form of ammonium nitrate by estimating the ratio of m/z 30 to m/z 46 in AMS data (Drewnick et al, 2007;Hayden et al, 2008). Relative to nitrate, low portions of ammonium (m/z, 18NH + 4 ) in the Na-rich (23 %) and dust (15 %) cloud residues suggest that in this region, ammonium nitrate was not a predominant form of nitrate in the two cloud residual types.…”

Section: Mixing State Of Secondary Species In Cloud Residuesmentioning

confidence: 99%

“…In addition, nitrate-containing particles accounted for 70 % of the cloud residues compared to 38 % of the ambient particles. Drewnick et al (2007) suggested that rather than sulfate, high nitrate content in pre-existing particles preferentially acted as cloud droplets. Compared with nitrate-containing ambient particles, the larger sizes of nitrate-containing residues (Fig.…”

Section: Comparison Of Cloud Residues With Ambient and Nonactivated Pmentioning

confidence: 99%

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In situ chemical composition measurement of individual cloud residue particles at a mountain site, southern China

et al. 2017

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Abstract. To investigate how atmospheric aerosol particles interact with chemical composition of cloud droplets, a ground-based counterflow virtual impactor (GCVI) coupled with a real-time single-particle aerosol mass spectrometer (SPAMS) was used to assess the chemical composition and mixing state of individual cloud residue particles in the Nanling Mountains (1690 m a.s.l.), southern China, in January 2016. The cloud residues were classified into nine particle types: aged elemental carbon (EC), potassium-rich (K-rich), amine, dust, Pb, Fe, organic carbon (OC), sodiumrich (Na-rich) and "Other". The largest fraction of the total cloud residues was the aged EC type (49.3 %), followed by the K-rich type (33.9 %). Abundant aged EC cloud residues that mixed internally with inorganic salts were found in air masses from northerly polluted areas. The number fraction (NF) of the K-rich cloud residues increased within southwesterly air masses from fire activities in Southeast Asia. When air masses changed from northerly polluted areas to southwesterly ocean and livestock areas, the amine particles increased from 0.2 to 15.1 % of the total cloud residues. The dust, Fe, Pb, Na-rich and OC particle types had a low contribution (0.5-4.1 %) to the total cloud residues. Higher fraction of nitrate (88-89 %) was found in the dust and Na-rich cloud residues relative to sulfate (41-42 %) and ammonium (15-23 %). Higher intensity of nitrate was found in the cloud residues relative to the ambient particles. Compared with nonactivated particles, nitrate intensity decreased in all cloud residues except for dust type. To our knowledge, this study is the first report on in situ observation of the chemical composition and mixing state of individual cloud residue particles in China.

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Section: Comparison Of Cloud Residues With Ambient and Nonactivated Pmentioning

confidence: 97%

Section: Q Lin Et Al: a Ground-based Counterflow Virtual Impactor Cmentioning

confidence: 99%

Section: Mixing State Of Secondary Species In Cloud Residuesmentioning

confidence: 99%

Section: Comparison Of Cloud Residues With Ambient and Nonactivated Pmentioning

confidence: 99%

See 2 more Smart Citations

In situ chemical composition measurement of individual cloud residue particles at a mountain site, southern China

et al. 2017

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“…We measured aerosol particle chemical composition with an Aerodyne aerosol mass spectrometer (AMS) quantifying sulfate, nitrate, ammonium and organics for particles between 50 and 1000 nm aerodynamic diameter (Jimenez et al, 2003;Drewnick et al, 2006;Canagaratna et al, 2007). The AMS provided the mass concentration measurements (µg m −3 ) calculated from the ion signals by using measured air sample flow rate, nitrate ionisation efficiency (IE) and relative IE of the other species.…”

Section: Methodsmentioning

confidence: 99%

Evaporation of sulfate aerosols at low relative humidity

et al. 2017

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Abstract. Evaporation of sulfuric acid from particles can be important in the atmospheres of Earth and Venus. However, the equilibrium constant for the dissociation of H 2 SO 4 to bisulfate ions, which is the one of the fundamental parameters controlling the evaporation of sulfur particles, is not well constrained. In this study we explore the volatility of sulfate particles at very low relative humidity. We measured the evaporation of sulfur particles versus temperature and relative humidity in the CLOUD chamber at CERN. We modelled the observed sulfur particle shrinkage with the ADCHAM model. Based on our model results, we conclude that the sulfur particle shrinkage is mainly governed by H 2 SO 4 and potentially to some extent by SO 3 evaporation. We found that the equilibrium constants for the dissociation of H 2 SO 4 to HSO − 4 (K H 2 SO 4 ) and the dehydration of H 2 SO 4 to SO 3 ( x K SO 3 ) are K H 2 SO 4 = 2-4×10 9 mol kg −1 and x K SO 3 ≥ 1.4 × 10 10 at 288.8 ± 5 K.

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In situ detection of the chemistry of individual fog droplet residues in the Pearl River Delta region, China

Lin

Peng

et al. 2016

JGR Atmospheres

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We use a single‐particle aerosol mass spectrometer coupled with a ground‐based counterflow virtual impactor to measure the chemical compositions of individual submicron fog droplet residues. This is the first report on single particle mass spectrometry measurements of fog droplet residual particles at ground level in an urban area. We show that most of the fog droplet residues were composed of elemental carbon (EC) (67.7%), followed by K‐rich (19.2%) and mineral dust/metal (12.3%) particles. The predominance of EC‐containing particles demonstrated that these particles could be effective fog nuclei and highlights the important influence of anthropogenic emissions on regional climate system. Compared with interstitial and ambient aerosols, nitrate was enhanced, sulfate was depressed, and ammonium‐ and organics‐containing particles were hardly found in the fog droplet residues during fog events, suggesting that dust and metal particles containing nitrate may be preferentially activated and that ammonium and organics may not play important roles in fog formation in Guangzhou. We also present direct observational evidence that trimethylamine and hydroxymethanesulfonate are not found within fog droplet residues, although we previously observed enhanced gas‐to‐particle partitioning of these compounds by fog processing. Additionally, higher fraction or intensities of [K]+, [Fe]+, and [SiO3]− were found in fog droplet residues than in ambient and interstitial particles.

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Measurement of Ambient, Interstitial, and Residual Aerosol Particles on a Mountaintop Site in Central Sweden using an Aerosol Mass Spectrometer and a CVI

Cited by 56 publications

References 25 publications

In situ chemical composition measurement of individual cloud residue particles at a mountain site, southern China

In situ chemical composition measurement of individual cloud residue particles at a mountain site, southern China

Evaporation of sulfate aerosols at low relative humidity

In situ detection of the chemistry of individual fog droplet residues in the Pearl River Delta region, China

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