Počet záznamů: 1
Desorption atmospheric pressure photoionization high-resolution mass spectrometry: a complementary approach for the chemical analysis of atmospheric aerosols
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SYSNO ASEP 0446381 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Desorption atmospheric pressure photoionization high-resolution mass spectrometry: a complementary approach for the chemical analysis of atmospheric aerosols Tvůrce(i) Parshintsev, J. (FI)
Vaikkinen, A. (FI)
Lipponen, K. (FI)
Vrkoslav, Vladimír (UOCHB-X) RID, ORCID
Cvačka, Josef (UOCHB-X) RID, ORCID
Kostiainen, R. (FI)
Kotiaho, T. (FI)
Hartonen, K. (FI)
Riekkola, M. L. (FI)
Kauppila, T. J. (FI)Celkový počet autorů 10 Zdroj.dok. Rapid Communications in Mass Spectrometry. - : Wiley - ISSN 0951-4198
Roč. 29, č. 13 (2015), s. 1233-1241Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova atmospheric aerosols ; mass spectrometry ; ambient ionization Vědní obor RIV CB - Analytická chemie, separace Institucionální podpora UOCHB-X - RVO:61388963 UT WOS 000357454600006 EID SCOPUS 84946222975 DOI 10.1002/rcm.7219 Anotace On-line chemical characterization methods of atmospheric aerosols are essential to increase our understanding of physicochemical processes in the atmosphere, and to study biosphere-atmosphere interactions. Several techniques, including aerosol mass spectrometry, are nowadays available, but they all suffer from some disadvantages. In this research, desorption atmospheric pressure photoionization high-resolution (Orbitrap) mass spectrometry (DAPPI-HRMS) is introduced as a complementary technique for the fast analysis of aerosol chemical composition without the need for sample preparation. Atmospheric aerosols from city air were collected on a filter, desorbed in a DAPPI source with a hot stream of toluene and nitrogen, and ionized using a vacuum ultraviolet lamp at atmospheric pressure. To study the applicability of the technique for ambient aerosol analysis, several samples were collected onto filters and analyzed, with the focus being on selected organic acids. To compare the DAPPI-HRMS data with results obtained by an established method, each filter sample was divided into two equal parts, and the second half of the filter was extracted and analyzed by liquid chromatography/mass spectrometry (LC/MS). The DAPPI results agreed with the measured aerosol particle number. In addition to the targeted acids, the LC/MS and DAPPI-HRMS methods were found to detect different compounds, thus providing complementary information about the aerosol samples. DAPPI-HRMS showed several important oxidation products of terpenes, and numerous compounds were tentatively identified. Thanks to the soft ionization, high mass resolution, fast analysis, simplicity and on-line applicability, the proposed methodology has high potential in the field of atmospheric research. Pracoviště Ústav organické chemie a biochemie Kontakt asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Viktorie Chládková, Tel.: 232 002 434 Rok sběru 2016
Počet záznamů: 1