Community Research and Development Information Service - CORDIS

Abstract

A possible explanation is given for the ubiquitous occurrence of 6-methyl-5-hepten-2-one and acetone in ambient air and reports for the first time on a widespread occurrence of geranyl acetone and 4-oxopentanal. A series of laboratory experiments were conducted in which it is demonstrated that significant amounts of geranyl acetone, 6-methyl-5-hepten-2-one (6-MHO), 4-oxopentanal (4-OPA), and acetone are formed by the reaction of ozone with foliage of common vegetation in the Mediterranean area.

In a separate experiment it was demonstrated that human skin lipid which contains squalene as a major component is a strong precursor for the four above mentioned compounds. The accidental touching of material which later comes into contact with ozone can lead to strong artefact formation of these ketones. Previously published results on these compounds much be seen in this new light. .

Additional information

Authors: FRUEKILDE P, JRC Ispra (IT);HJORTH J, JRC Ispra (IT);JENSEN N R, JRC Ispra (IT);KOTZIAS D, JRC Ispra (IT);LARSEN B, JRC Ispra (IT)
Bibliographic Reference: Article: Atmospheric Environment
Record Number: 199710687 / Last updated on: 1997-06-10
Category: PUBLICATION
Original language: en
Available languages: en