Estudi de la contaminació química de les aigües subterrànies de Parets del Vallès

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Roser Rubio i Rovira
Gemma Rauret i Dalmau
Lleonard Matia i Ribot
In the present work a study of chemical characterization of groundwaters, based on their
ionic ratios, as well as metal trace determination is carried out in Parets del Valles, an industrialized village near Barcelona (Catalonia).

Thirteen parameters have been analyzed in seventeen wells and from the data obtained,
Schoeller-Berkaloff, modified Stiff and Piper-Hill-Langelier diagrams have been constructed, in order to settle the different groups characterizing proundwatcrs in the studied zone.

Nitrate content has been specially studied because his occurrence is highly related with
the use of fertilizers in agricultural areas. Sampling and analytical procedures are described.

All samples studied are calcium hydrogencarbonate type with rHCO3-+ rSO4 2- < rCa2+ + rMg2+, rCl- > rNa+ according Alekine, and with c.b.i. > O. The results show
a clear relationship between groundwaters and surface waters quality.

On the other hand a study of Pb, Cu, Cd, Hg, Cr and B is carried out in twenty four
wells. The analytical methods used are AAS for Pb, Cu, Cd ang Hg, and ICP-AES method for B and Cr. The contents are compared with those measured in surface waters corresponding to four sampling points in Tenes river that crosses the zone.

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How to Cite
Rubio i Rovira, Roser et al. “Estudi de la contaminació química de les aigües subterrànies de Parets del Vallès”. Butlletí de les Societats Catalanes de Física, Química, Matemàtiques i Tecnologia, vol.VOL 7, no. 2, pp. 251-69, https://raco.cat/index.php/ButlletiSCFQMT/article/view/221954.

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