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Secondary limonene ...
Secondary limonene endo-ozonide: A major product from gas-phase ozonolysis of R-(+)-limonene at ambient temperature
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Norgaard, AW (författare)
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Nojgaard, JK (författare)
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Larsen, K (författare)
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- Sporring, Sune (författare)
- Lund University,Lunds universitet,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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Wilkins, CK (författare)
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Clausen, PA (författare)
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Wolkoff, P (författare)
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(creator_code:org_t)
- Elsevier BV, 2006
- 2006
- Engelska.
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Ingår i: Atmospheric Environment. - : Elsevier BV. - 1352-2310. ; 40:19, s. 3460-3466
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A 16 s old gas-phase ambient temperature and 1% relative humidity reaction mixture of ozone and R-limonene (ca. 1:10) was sampled on XAD-2 resin followed by pressurized liquid extraction with dichloromethane at ambient temperature. Low temperature on-column injection and gas chromatography (GC) revealed equal amounts of diastereomeric secondary endo-limonene ozonides, in addition to 4-acetyl-l-methyl-cyclohexene (AMCH), 3-isopropyl-6-oxo-heptanal (IPOH), and endo-limonene mono-epoxides. The secondary endo-limonene ozonides began to decrease at extraction temperature above 150 degrees C and were absent at 200 degrees C. Their formation was unaffected by an increase of the relative humidity to 15%. The identification of the secondary limonene ozonides was confirmed by (1) unique consecutive losses of OH and H2O2, respectively, from the protonated quasi-molecular ion in GC-chemical ionization mass spectrometry mode (isobutane), in addition to high resolution mass determination of [M-OH] and [M-H2O2] ions in EI mode; (2) comparison of mass spectral data to that of synthesized secondary endo-limonene ozonides; and (3) oxidation of dimethyl sulfide to dimethyl sulfoxide and subsequent increase of IPOH.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
Nyckelord
- pressurized
- liquid extraction
- limonene
- endo-limonene ozonide
- gas-phase ozonolysis
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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