| Mass-dependent isotopic fractionation in ozone produced by electrolysis. | |
MedLine Citation:
|
PMID: 19462962 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
|
During the electrolysis of water in an acidified medium, ozone is produced, in association with oxygen, at the anode. This ozone is found to be depleted in heavy isotopes ((18)O and (17)O), with respect to the source water, following a strict mass-dependent rule. Our experiments also suggest that the isotopes are distributed at the apex and base positions of the bent ozone molecule in a random fashion, without obeying the zero-point energy constraint. Endowed with these characteristics, the electrolytic ozone provides a source of reference that has a known internal heavy isotope distribution for spectroscopic studies. In addition, this ozone, when subjected to photolytic decomposition, can be used as a source of atomic oxygen with mass-dependent isotope ratios that can be varied by simply changing the water composition. Such an oxygen source is important for studying isotope effects in gas-phase recombination/exchange reactions such as COO + O* --> [COOO*] --> COO* + O. |
Authors:
|
S K Bhattacharya; Joel Savarino; Boaz Luz |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Analytical chemistry Volume: 81 ISSN: 1520-6882 ISO Abbreviation: Anal. Chem. Publication Date: 2009 Jul |
Date Detail:
|
Created Date: 2009-06-30 Completed Date: 2009-09-29 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0370536 Medline TA: Anal Chem Country: United States |
Other Details:
|
Languages: eng Pagination: 5226-32 Citation Subset: - |
Affiliation:
|
Earth Sciences Division, Physical Research Laboratory, Ahmedabad, Gujarat 380009, India. bhatta@prl.res.in |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Peroxidative metabolism of beta2-agonists salbutamol and fenoterol and their analogues.
Next Document: Analytical approaches toward successful human cell metabolome studies by NMR spectroscopy.