This work presents the results of an assessment of the existence and concentration of 13volatile organic compounds (VOCs) in groundwaters from 14 hydrological basins in Sicily(25,710 km2). On the basis of hydrological, hydrogeochemical and geological studies, 324sampling points were selected. All groundwater sampled were collected twice, fromOctober to December 2004 and from February to May 2005, and were analysed to determinethe concentration and spatial distribution of the VOCs in the aquifers. The need to analyzea large number of samples in a short space of time so as to obtain quantitative analyses intrace concentration levels spurred us to create a new analytical method, both simple andsensitive, based on HS-SPME/GC/MS. The concentrations of VOCs measured in industrialand intensive agricultural unconfined aquifers were greater than those found in otheraquifers. Tetrachloroethylene, chloroform, trichloroethylene and 1,2-dichloropropanewere the most frequently detected VOCs. However, they exceeded the guideline valuesproposed by the EU in only three aquifers located near to industrial and intense agriculturalareas.
|Numero di pagine||14|
|Stato di pubblicazione||Published - 2008|
All Science Journal Classification (ASJC) codes
- Ecological Modelling
- Water Science and Technology
- Waste Management and Disposal