2. Sources and impacts of VOCs

2.1 Sources and nature of VOCs

The definitions proposed above imply a variety of organic compounds likely to be encountered in the gaseous emissions of various human activities. CITEPA [2] lists pollutant emissions into the atmosphere, by sector of activity and by year. For non-methane VOCs (figure 1 ), the change between 1990 and 2001 was -32%, with wide disparities. For example, there was a marked drop in the transportation sector and stability in the industrial sector....