Noise in the city of Valencia: its relation to other air level contaminants.

We measured environmental noise in the Spanish Mediterranean coastal city of Valencia. Simultaneously, we made a count of the passing vehicle sat the same points. We calculated the mean of traffic intensity in the points recorded in each year of the study. The recorded noise was extrapolated to the traffic recordings of previous years to establish a relation between noise and traffic intensity. The information concerning chemical contamination was obtained from 1979 to 1989 in the same points. A statistical analysis was carried out in order to determine the evolution of various atmospheric contaminants over the last decade (SO2, smoke, NO2, lead, sedimentable material) in each point and the possible relationship between acoustic contamination and the main chemical contaminants.