Počet záznamů: 1

Selected ion flow tube (SIFT) studies of the reactions of H3O+, NO+ and O-2(+center dot) with six volatile phytogenic esters

SYSNO ASEP	0359546
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Selected ion flow tube (SIFT) studies of the reactions of H3O+, NO+ and O-2(+center dot) with six volatile phytogenic esters
Tvůrce(i)	Sovová, K. (CZ) Dryahina, Kseniya (UFCH-W)_{RID, ORCID} Španěl, Patrik (UFCH-W)_{RID, ORCID}
Zdroj.dok.	International Journal of Mass Spectrometry. - : Elsevier - ISSN 1387-3806 Roč. 300, č. 1 (2011), s. 31-38
Poč.str.	8 s.
Jazyk dok.	eng - angličtina
Země vyd.	NL - Nizozemsko
Klíč. slova	SIFT-MS ; ion-molecule reactions ; plant esters
Vědní obor RIV	CF - Fyzikální chemie a teoretická chemie
CEP	GA202/09/0800 GA ČR - Grantová agentura ČR
	GA203/09/0256 GA ČR - Grantová agentura ČR
CEZ	AV0Z40400503 - UFCH-W (2005-2011)
UT WOS	000287789200005
DOI	10.1016/j.ijms.2010.11.021
Anotace	The selected ion flow tube (SIFT) was used to study the reactions of the three SIFT-MS precursor ions H3O+, NO+ and O-2(+center dot) with six phytogenic esters: hexyl acetate, phenethyl acetate, benzyl acetate, methyl salicylate, methyl benzoate and benzyl benzoate. These compounds are emitted into the atmosphere by various species of plants and play a role in communication between individual plants and also amongst different species. Thus, it is necessary to know the rate constants and branching ratios of the different ion products of these reactions for identification and quantification by SIFT-MS. The results of this study show that the reactions of H3O+ with the esters proceed via proton transfer, which is non-dissociative for methyl salicylate, entirely dissociative for benzyl benzoate and partly dissociative for the remaining four esters. All protonated esters readily associate with water molecules with the notable exception of methyl salicylate.
Pracoviště	Ústav fyzikální chemie J.Heyrovského
Kontakt	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Rok sběru	2012

Počet záznamů: 1