English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Design, characterization, and first field deployment of a novel aircraft-based aerosol mass spectrometer combining the laser ablation and flash vaporization techniques

Hünig, A., Appel, O., Dragoneas, A., Molleker, S., Clemen, H.-C., Helleis, F., et al. (2022). Design, characterization, and first field deployment of a novel aircraft-based aerosol mass spectrometer combining the laser ablation and flash vaporization techniques. Atmospheric Measurement Techniques, 15(9), 2889-2921. doi:10.5194/amt-15-2889-2022.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Hünig, Andreas1, Author              
Appel, Oliver2, Author              
Dragoneas, Antonis1, Author              
Molleker, Sergej1, Author              
Clemen, Hans-Christian1, Author              
Helleis, Frank2, Author              
Klimach, Thomas3, Author              
Köllner, Franziska1, Author              
Böttger, Thomas1, Author              
Drewnick, Frank1, Author              
Schneider, Johannes1, Author              
Borrmann, Stephan1, Author              
Affiliations:
1Particle Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826291              
2Max Planck Institute for Chemistry, Max Planck Society, ou_1826284              
3Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826291              

Content

show
hide
Free keywords: -
 Abstract: In this paper, we present the design, development, and characteristics of the novel aerosol mass spectrome- ter ERICA (ERC Instrument for Chemical composition of Aerosols; ERC – European Research Council) and selected results from the first airborne field deployment. The instru- ment combines two well-established methods of real-time in situ measurements of fine particle chemical composition. The first method is the laser desorption and ionization tech- nique, or laser ablation technique, for single-particle mass spectrometry (here with a frequency-quadrupled Nd:YAG laser at λ = 266 nm). The second method is a combination of thermal particle desorption, also called flash vaporization, and electron impact ionization (like the Aerodyne aerosol mass spectrometer). The same aerosol sample flow is ana- lyzed using both methods simultaneously, each using time- of-flight mass spectrometry. By means of the laser ablation, single particles are qualitatively analyzed (including the re- fractory components), while the flash vaporization and elec- tron impact ionization technique provides quantitative infor- mation on the non-refractory components (i.e., particulate sulfate, nitrate, ammonia, organics, and chloride) of small particle ensembles. These techniques are implemented in two consecutive instrument stages within a common sample inlet and a common vacuum chamber. At its front end, the sample air containing the aerosol particles is continuously injected via an aerodynamic lens. All particles which are not ablated by the Nd:YAG laser in the first instrument stage continue their flight until they reach the second instrument stage and impact on the vaporizer surface (operated at 600 ◦C). The ERICA is capable of detecting single particles with vacuum aerodynamic diameters (dva) between ∼ 180 and 3170 nm (d50 cutoff). The chemical characterization of single parti- cles is achieved by recording cations and anions with a bipo- lar time-of-flight mass spectrometer. For the measurement of non-refractory components, the particle size range extends from approximately 120 to 3500 nm (d50 cutoff; dva), and the cations are detected with a time-of-flight mass spectrom- eter. The compact dimensions of the instrument are such that the ERICA can be deployed on aircraft, at ground stations, or in mobile laboratories. To characterize the focused detection lasers, the ablation laser, and the particle beam, comprehen- sive laboratory experiments were conducted. During its first deployments the instrument was fully automated and oper- ated during 11 research flights on the Russian high-altitude research aircraft M-55 Geophysica from ground pressure and temperature to 20 km altitude at 55 hPa and ambient temper- atures as low as −86 ◦C. In this paper, we show that the ER- ICA is capable of measuring reliably under such conditions.

Details

show
hide
Language(s): eng - English
 Dates: 2022-05-11
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.5194/amt-15-2889-2022
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Atmospheric Measurement Techniques
  Abbreviation : AMT
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Göttingen : European Geosciences Union, Copernicus
Pages: - Volume / Issue: 15 (9) Sequence Number: - Start / End Page: 2889 - 2921 Identifier: ISSN: 1867-1381
CoNE: https://pure.mpg.de/cone/journals/resource/1867-1381