The new instrument using a TC–BC (total carbon–black carbon) method for the online measurement of carbonaceous aerosols
We present a newly developed total carbon analyzer (TCA08) and a 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 µg C, which corresponds to a concentration of 0.3 µg C m−3 at a sample flow rate of 16.7 L min−1 and a 1 h sampling time base. The concentration of particulate equivalent 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 the TCA08 and Aethalometer (AE33) is an easy-to-deploy and low-maintenance continuous measurement technique for the high-time-resolution determination of equivalent organic and elemental carbon (EC) in different particulate matter size fractions, which avoids pyrolytic correction and the need for high-purity compressed gases. The performance of this online method relative to the standardized off-line thermo-optical OC–EC method and respective instruments 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.
2020
2020-08-17 12:55:07
1060
total carbon, aeroosl, black carbon, carbonaceous matter
r6
Martin
Rigler
70
Luka
Drinovec
70
Gašper
Lavrič
70
Anastasia
Vlachou
70
André S. H.
Prévôt
70
Jean-Luc
Jaffrezo
70
IASONAS
STAVROULAS
70
Jean
Sciare
70
Judita
Burger
70
Irena
Krajnc
70
Janja
Turšič
70
Anthony D. A.
Hansen
70
Griša
Močnik
70
COBISS_ID
3
25335555
DOI
15
10.5194/amt-13-4333-2020
NUK URN
18
URN:SI:UNG:REP:IWRINC8T
Rigler_-_AMT_2020_-_Suppl_-_The_new_instrument_using_a_TC–BC_total_carbon–black_carbon_method_for_the_online_measurement_of_carbonaceous_aerosols.pdf
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