FreeTextSearch
 
search View English language version of this page
 
 
 

On-line analysis of secondary ozonides from cyclohexene and d-limonene ozonolysis using atmospheric sampling townsend discharge ionization mass spectrometry

Reference Nøjgaard JK, Nørgaard AW, Wolkoff P. On-line analysis of secondary ozonides from cyclohexene and d-limonene ozonolysis using atmospheric sampling townsend discharge ionization mass spectrometry. Atmos Environ 2007;41(3741):8345-54.
Udgivet: 2007
[Type] Videnskabelig artikel
[Resumé] An on-line technique has been developed for analysis of gas-phase oxidation products formed in a reaction flow tube using different reaction times, concentrations and humidities. Products of ozonolysis, including thermally labile secondary ozonides (SOZ), were directly introduced into an atmospheric sampling townsend discharge ionization (ASTDI) source coupled to a triple quadrupole mass spectrometer (MS). Instant changes in the product composition were monitored in the total-ion chromatogram, or by fragment ions in the collision activated dissociation mass spectra by use of MS/MS scan techniques. Assignment of the individual ions was accomplished by inspection of the products' mass spectra obtained by pre-concentration of the gas phase on a dedicated short column followed by chromatographic analysis. The observed reaction products correspond to those identified with other techniques. Of relevance for future mechanistic modelling, is the point that conditions of excess d-limonene favoured the formation of the d-limonene SOZ (major product), which was observed to be quite stable in dry and humid air, without oxidants. The d-limonene/ozone ratio was observed to be crucial for the stability of the SOZ, because it is prone to ozonolysis, and no SOZ could be detected in completely reacted 1:1 mixtures.
Link: http://dx.doi.org/10.1016/j.atmosenv.2007.06.019
Bestilling: Denne udgivelse kan ikke bestilles fra NFA's Forlag
[Oprettet] 01.09.2007
 
Opdateret  01.09.2007
Kontakt: NFA's webredaktion
 
Sociale medieomtaler af denne artikel

Klik på cirklen for mere information om omtaler og deling af denne artikel.

Altmetric er en tjeneste, der registrerer sociale medieomtaler og delinger af referencer forskningsartikler, hvis læsere har linket unikt til artiklen (tidskriftets abstractside, DOI-link etc.). Tjenesten overvåger p.t. omtaler på udvalgte sociale medieplatforme.

Hvis cirklen viser "?", er der endnu ikke registreret omtaler på de overvågede medier.

Om betalingstidsskrifter
Mange videnskabelige tidsskrifter tager betaling for adgang til hele artiklen. Hvis du ikke har adgang til et bestemt tidsskrift, kan du benytte Bibliotek.dk. Her kan du søge efter artikler, bogtitler og tidsskrifter på tværs af de danske bibliotekssystemer.

Det letteste er at gå ind under "Flere søgemuligheder" på siden og så indtaste tidsskriftets navn i Feltet "Titel". Derved får du en oversigt over folke- eller forskningsbiblioteker, som abonnerer på det pågældende tidsskrift.

 
 
 

Det Nationale Forskningscenter for Arbejdsmiljø | Lersø Parkallé 105 | DK-2100 København Ø |

Tlf 39 16 52 00 | fax 39 16 52 01 | e-mail: nfa@arbejdsmiljoforskning.dk | CVR: 15413700 | EAN: 5798000399518

Vis desktop version