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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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Preprints
https://doi.org/10.5194/amt-2019-376
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-2019-376
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 04 Dec 2019

Submitted as: research article | 04 Dec 2019

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A revised version of this preprint was accepted for the journal AMT and is expected to appear here in due course.

The new TC-BC method and online instrument for the measurement of carbonaceous aerosols

Martin Rigler1, Luka Drinovec1,2, Gašper Lavrič1, Athanasia Vlachou3, André S. H. Prévôt3, Jean Luc Jaffrezo4, Iasonas Stavroulas5, Jean Sciare5, Judita Burger6, Irena Kranjc6, Janja Turšič6, Anthony D. A. Hansen7, and Griša Močnik1,2 Martin Rigler et al.
  • 1Aerosol d.o.o., Ljubljana, Slovenia
  • 2Jozef Stefan Institute, Ljubljana, Slovenia
  • 3Paul Scherrer Institute, Villigen, Switzerland
  • 4Univ. Grenoble Alpes, CNRS, IRD, G-INP, IGE, Grenoble, France
  • 5Energy, Environment, Water Research Center, The Cyprus Institute, Nicosia, Cyprus
  • 6Slovenian Environment Agency, Ljubljana, Slovenia
  • 7Magee Scientific Corp, Berkeley, CA, USA

Abstract. We present the newly developed Total Carbon Analyzer (TCA08), and a new method for online speciation of carbonaceous aerosol with a high time resolution. The total carbon content is determined by flash heating of a sample collected on a quartz-fiber filter with a time base between 20 min and 24 h. The limit of detection is approximately 0.3 μgC, which corresponds to a concentration of 0.3 μgC/m3 at a sample flow rate of 16.7 LPM and a 1-hour sampling time base. The concentration of particulate organic carbon (OC) is determined by subtracting black carbon concentration, concurrently measured optically by an Aethalometer®, from the total carbon concentration measured by the TCA08. The combination of TCA08 and Aethalometer (AE33) is an easy-to-deploy and low maintenance continuous measurement technique for the high time resolution determination of organic and elemental carbon (EC) in different particulate matter size fractions, which avoids pyrolytic correction and need for high purity compressed gases. The equivalence of this new online method to the standardized off-line thermo-optical OC-EC methods was evaluated during a winter field campaign at an urban background location in Ljubljana, Slovenia. The organic matter-to-organic carbon ratio obtained from the comparison with an Aerosol Chemical Speciation Monitor (ACSM) was OM/OC = 1.8, in the expected range.

Martin Rigler et al.

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Martin Rigler et al.

Martin Rigler et al.

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Short summary
Carbonaceous aerosols are large fraction of fine particulate mater. They are extremely diverse and they directly impact air quality, visibility, cloud formation and public health. In this paper we present a new instrument and new method to measure carbon content in particulate matter in real time and high time resolution. The new method was validated in a 1 month winter field campaign in Ljubljana, Slovenia.
Carbonaceous aerosols are large fraction of fine particulate mater. They are extremely diverse...
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