engleski

How dangerous is surfacial ozone?

One hundred years after the discovery of ozone, atmospheric chemists aware that human activities (mainly production of nitrogen oxides) have caused the concentrations of ozone in surfacial air to increase, and that this trend continues. This increase engenders elevated ozone concentrations for such long periods. Recent communucations concerned with the high mortality related to air pollution in the UK and the Netherlands during the 2003 heat wave have linked it to particulate matter and ozone concentrations. These findings raise the specter that high oxidant levels may well have an important impact on life. recent papers on possible ozone "production" and functions within the human body engender such suspicions. Based on ozone data during the heat wave 2003 as well as on monthly values of particulate matter (PM10 and PM2.5) data and mortality data for 1999-2003 in Zagreb we can exclude ozone but not particulate matter air pollution as culprit for an excess number of deaths. Also, based on our previous results on heterogeneous lipid ozonation with polluted air we present an explanation for the observation of products which seem to carry the signature of a reaction with endogeneous ozone.

ozone

nije evidentirano