Počet záznamů: 1
Time-integrated thermal desorption for quantitative SIFT-MS analyses of atmospheric monoterpenes
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SYSNO ASEP 0510108 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Time-integrated thermal desorption for quantitative SIFT-MS analyses of atmospheric monoterpenes Tvůrce(i) Sovová, Kristýna (UFCH-W) RID
Spesyvyi, Anatolii (UFCH-W) ORCID, RID
Bursova, M. (CZ)
Pásztor, Pavel (UFCH-W)
Kubišta, Jiří (UFCH-W) RID, ORCID
Shestivska, Violetta (UFCH-W) RID, ORCID
Španěl, Patrik (UFCH-W) RID, ORCIDZdroj.dok. Analytical and Bioanalytical Chemistry. - : Springer - ISSN 1618-2642
Roč. 411, č. 14 (2019), s. 2997-3007Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova ion flow tube ; volatile organic-compounds ; mass-spectrometry ; air ; breath ; emissions ; h3o+ ; voc ; no+ ; ti-td/sift-ms Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry CEP GJ17-13157Y GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000468293800001 EID SCOPUS 85066036105 DOI 10.1007/s00216-019-01782-6 Anotace A new time-integrated thermal desorption technique has been developed that can be used with selected ion flow tube mass spectrometry, TI-TD/SIFT-MS, for off-line quantitative analyses of VOCs accumulated onto sorbents. Using a slow desorption temperature ramp, the absolute amounts of desorbed compounds can be quantified in real time by SIFT-MS and constitutional isomers can be separated. To facilitate application of this technique to environmental atmospheric monitoring, method parameters were optimised for quantification of the three common atmospheric monoterpenes:pinene, R-limonene and 3-carene. Three sorbent types, Tenax TA, Tenax GR and Porapak Q, were tested under 26 different desorption conditions determined by the design of experiment, DOE, systematic approach. The optimal combination of type of sorbent, bed length, sampling flow rate, sample volume and the initial desorption temperature was determined from the experimental results by ANOVA. It was found that Porapak Q exhibited better efficiency of sample collection and further extraction for total monoterpene concentration measurements. On the other hand, Tenax GR or TA enabled separation of all three monoterpenes. The results of this laboratory study were tested with the sample accumulated from a branch of a Pinus nigra tree. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2020 Elektronická adresa http://hdl.handle.net/11104/0300659
Počet záznamů: 1