Institute for Nuclear Research
MTA Certificate of Research Excellence

Source apportionment of carbonaceous aerosols using radiocarbon

Seminar Source apportionment of carbonaceous aerosols using radiocarbon


Department of Chemistry and Biochemistry & Oeschger Centre for Climate Change Research, University of Bern (Switzerland)
Contact person Dr. Mihály Molnár
Time 2016-02-09 11:00
Place MTA Atomki, nagyelőadó (Debrecen, Bem tér 18/c, XII. épület 3. emelet)
Description of event

Carbonaceous aerosols are a major fraction of particulate matter (PM) in the atmosphere and contribute substantially to climate and health effektus. For mitigation of emissions, a detailed knowledge of sources and formation processes is necessary, which is a difficult task. A differentiation of fossil from non-fossil emissions is provided by analysis of the long-lived radioisotope 14C (radiocarbon, half-life 5730 years), as fossil material does not contain 14C anymore because of its age, whereas non-fossil material is on the contemporary 14C level. Carbonaceous aerosols are often differentiated into organic carbon (OC) and elemental carbon (EC) according to their physical and chemical properties. For 14C source apportionment, it is necessary to separate both fractions from each other efficiently in order to omit biases. This presentation will show a procedure for the separation of OC and EC with a thermal-optical aerosol analyzer combined with online 14C analysis using accelerator mass spectrometry (AMS) and the application of this technique to air quality studies in Europe and East Asia.

Other information

Az előadás előtt 10:30-kor tea. Vendégeket szívesen látunk.