GEOBASI: il Database Geochimico della Regione Toscana.

In this study the new Regional Geochemical Database (RGD) is presented and illustrated in the framework of a joint collaboration among the three Tuscan universities (Florence, Pisa and Siena), CNR-IGG (Institute of Geosciences and Earth Resources of Pisa), ARPAT (Regional Agency for the Environmental Protection), LAMMA (Environmental Modeling and Monitoring Laboratory for Sustainable Development) Consortium and S.I.R.A. (Territorial and Environmental Informative System of Tuscany). This database represents an important tool that can be useful and fruitful for different users (e.g. institutional, public and private companies), whose contents can freely be downloaded and queried. Real-time implementations can be provided according to shared and defined rules and standards. The main goal is that to provide a cognitive state of the Tuscan territory where geochemical data relative to the different environmental matrices are contained. The first phase of the project was aimed to promote the use of the geochemical data already available through a powerful webgis interface and to identify the graphical-numerical criteria, which in a such complex database can be able to: i) recognize the spatial variability in the investigated context, ii) highlight the geographic location of anomalous cases, iii) compare the results of different analytical methodologies applied for the determination of the same element and/or chemical species, iv) extract the geochemical data related to a specific monitoring and/or area, and finally v) recover information about those data, which are below the detection limit. Further developments of this project will be focused on the definition of rules and standardized methods in a way that the RGD can also be implemented by other users not presently part of the working group.