Time-integrated thermal desorption for quantitative SIFT-MS analyses of atmospheric monoterpenes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F19%3A00510108" target="_blank" >RIV/61388955:_____/19:00510108 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0300659" target="_blank" >http://hdl.handle.net/11104/0300659</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00216-019-01782-6" target="_blank" >10.1007/s00216-019-01782-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Time-integrated thermal desorption for quantitative SIFT-MS analyses of atmospheric monoterpenes

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Time-integrated thermal desorption for quantitative SIFT-MS analyses of atmospheric monoterpenes

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GJ17-13157Y" target="_blank" >GJ17-13157Y: Metody hmotnostní spektrometrie založené na iontové chemii pro rychlé stanovení biogenních těkavých organických látek vedoucích k znečištění atmosféry</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Analytical and Bioanalytical Chemistry

ISSN

1618-2642

e-ISSN

—

Svazek periodika

411

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

2997-3007

Kód UT WoS článku

000468293800001

EID výsledku v databázi Scopus

2-s2.0-85066036105