PMID: 18200871Jan 19, 2008Paper

Chemical investigation of eight different types of carbonaceous particles using thermoanalytical techniques

Environmental Science & Technology
Georg MatuschekOtmar Schmid

Abstract

The chemical composition of ambient aerosol particles affects numerous important aerosol parameters such as their hygroscopicity, optics, and mass as well as their potentially adverse health effects. The objective of this study was to derive both detailed chemical speciation and useful proxies for the quantitative classification of the organic matter (OM) content of carbonaceous aerosol samples. Using three different thermal desorption techniques in an inert atmosphere we investigated eight different carbonaceous particulate matter (PM) samples used for health effect studies: thermal desorption gas chromatography with mass spectrometry, evolved gas analysis with mass spectrometry, and thermogravimetry with Fourier transform infrared spectroscopy. The samples include different types of laboratory-generated particles (pigment black, diffusion flame soot, spark-generated carbon) and two ambient aerosol samples (diesel soot and particulates collected in a road tunnel). All samples showed increasing mass desorption with rising temperature, but no reliable OM classification was possible based on thermal mass desorption alone. In fact, the "organic-free" spark-generated carbon particles showed the second highest mass desorption at 800...Continue Reading

References

Jan 1, 1994·Annual Review of Public Health·D W Dockery, C A Pope
Mar 7, 2002·JAMA : the Journal of the American Medical Association·C Arden PopeGeorge D Thurston
Jul 18, 2002·Inhalation Toxicology·Günter Oberdörster
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Jan 25, 2006·Toxicological Sciences : an Official Journal of the Society of Toxicology·Wolfgang SchoberJeroen Buters

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Citations

Apr 28, 2010·Particle and Fibre Toxicology·Francesca AlessandriniHeidrun Behrendt
Apr 25, 2014·Particle and Fibre Toxicology·Marianne GeiserHolger Schulz
Oct 22, 2009·Biomarkers : Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals·O SchmidT Stoeger

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