alexa The ozonation of pyrene: Pathway and product identification
Environmental Sciences

Environmental Sciences

Journal of Pollution Effects & Control

Author(s): JehngJyun Yao, ZhiHeng Huang, Susan J Masten

Abstract Share this page

The pathway by which ozone reacts with pyrene, a polycyclic aromatic hydrocarbon (PAH), is proposed in this paper. Pyrene was dissolved in a 90% acetonitrile:water (v/v) mixture. At this ratio, sufficient water is present to participate in the ozonolysis reaction and thereby mimic what occurs in pure water. The initial pyrene concentration was 5 mM. The ozone dosages were varied to obtain different extents of reaction. A stoichiometric ratio of 1.68 mol ozone mol−1 pyrene was required to completely destroy pyrene. The ozonation products were tentatively identified by gas chromatography–mass spectrometry (GC–MS). Fourteen products including aldehyde and carboxylic acid substituted phenanthrene- and biphenyl-type oxidation products were identified. Several ring-cleavage reactions occurred sequentially: (i) ring cleavage of pyrene first occurred at the 4,5 position, with phenanthrene-type products predominating; and (ii) once secondary ring cleavage occurred, the concentration of pyrene and the phenanthrene-type products decreased dramatically, while the concentration of biphenyl-type products increased. The oxidation of pyrene by hydroxyl free radicals was found to be involved in the reaction, even at pH 3.7.

This article was published in Water Research and referenced in Journal of Pollution Effects & Control

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri, Food, Aqua and Veterinary Science Journals

Dr. Krish

agrifoodaquavet@omicsonline.com

1-702-714-7001 Extn: 9040

Clinical and Biochemistry Journals

Datta A

clinical_biochem@omicsonline.com

1-702-714-7001Extn: 9037

Business & Management Journals

Ronald

business@omicsonline.com

1-702-714-7001Extn: 9042

Chemical Engineering and Chemistry Journals

Gabriel Shaw

chemicaleng_chemistry@omicsonline.com

1-702-714-7001 Extn: 9040

Earth & Environmental Sciences

Katie Wilson

environmentalsci@omicsonline.com

1-702-714-7001Extn: 9042

Engineering Journals

James Franklin

engineering@omicsonline.com

1-702-714-7001Extn: 9042

General Science and Health care Journals

Andrea Jason

generalsci_healthcare@omicsonline.com

1-702-714-7001Extn: 9043

Genetics and Molecular Biology Journals

Anna Melissa

genetics_molbio@omicsonline.com

1-702-714-7001 Extn: 9006

Immunology & Microbiology Journals

David Gorantl

immuno_microbio@omicsonline.com

1-702-714-7001Extn: 9014

Informatics Journals

Stephanie Skinner

omics@omicsonline.com

1-702-714-7001Extn: 9039

Material Sciences Journals

Rachle Green

materialsci@omicsonline.com

1-702-714-7001Extn: 9039

Mathematics and Physics Journals

Jim Willison

mathematics_physics@omicsonline.com

1-702-714-7001 Extn: 9042

Medical Journals

Nimmi Anna

medical@omicsonline.com

1-702-714-7001 Extn: 9038

Neuroscience & Psychology Journals

Nathan T

neuro_psychology@omicsonline.com

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

John Behannon

pharma@omicsonline.com

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

social_politicalsci@omicsonline.com

1-702-714-7001 Extn: 9042

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version