On the use of the field Sunset semi-continuous analyzer to measure equivalent black carbon concentrations

Autor(en)

Nadezda Zikova, Petr Vodicka, Wolfgang Ludwig, Regina Hitzenberger, Jaroslav Schwarz

Abstrakt

This study describes a method to calculate equivalent black carbon (EBC) concentrations comparable to those obtained from optical filter-based EBC instrumentation from data obtained with a semi-continuous thermo-optical analyzer (Sunset Laboratory Inc., USA) without any need of instrument alterations or extra costs. A correction for the reflection of the Sunset analyzer laser beam by the walls of the sampling tube is introduced. EBCSunset concentrations obtained during two intensive campaigns in Prague (one in winter and one in summer) were compared also to EBC measured by an AE31 Aethalometer (EBCaeth), an AE51 MicroAethalometer (EBCmicro), and a Multi Angle Absorption Photometer (EBCMAAP). Good agreement was observed in both campaigns. The EBCSunset data were also corrected for loading effects in two ways-a simple loading correction and a total correction using data also from the MAAP and a nephelometer. The loading corrections gave similar results for EBCSunset and the aethalometer data except for the simple correction for summer EBCSunset data. The multiple scattering correction factors computed for EBCSunset agreed well with those calculated for EBCaeth. The wall reflection correction for the Sunset analyzer data further improves the agreement between EBCSunset and EBCMAAP.

Organisation(en)

Aerosolphysik und Umweltphysik

Externe Organisation(en)

Czech Academy of Sciences, Charles University Prague

Journal

Aerosol Science and Technology

Band

50

Seiten

284-296

Anzahl der Seiten

13

ISSN

0278-6826

DOI

https://doi.org/10.1080/02786826.2016.1146819

Publikationsdatum

03-2016

Peer-reviewed

Ja

ÖFOS 2012

103039 Aerosolphysik

Schlagwörter

ASJC Scopus Sachgebiete

Pollution, Allgemeine Materialwissenschaften, Environmental Chemistry

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/119a3d41-1a8a-42f1-b745-4a3a39b4fb41