4. Determination of chemical composition
As in the case of gases, there are no methods that are well suited to aerosol analysis. Methods are always time-delayed with respect to collection. Artifacts are always possible, and the non-universality of methods favors the analysis of certain compounds to the detriment of others. In all cases, methods differ for the analysis of the mineral and organic phases.
4.1 Organic matter analysis
In general, organic matter is extracted from the filter by ultrasonic extraction or in a soxhlet, using polar or non-polar organic solvents. The extract is concentrated, either by evaporation in a rotary evaporator or by passing through a flow of dry nitrogen, then purified on a SepPak-type column. Finally, it is taken up in another organic solvent compatible with the analysis....
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
Determination of chemical composition
Some significant results
Article included in this offer
"Environment manager"
(
305 articles
)
Updated and enriched with articles validated by our scientific committees
A set of exclusive tools to complement the resources
References
In Engineering Techniques
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
