The measurement and model predictions of photochemical pollutants in the Uffizi Gallery, Florence

Indoor and outdoor pollutant concentrations were measured in the period 2-9 June 1997 in the Uffizi Gallery, Florence. The campaign was intended to characterise, from a point of view of photochemical pollution, the air quality in the Gallery in the warm season, when photochemical activity is dominant. O3, NO, NO2, NOx, PAN, HONO and HNO3 were monitored. The study shows that the indoor concentration of a given pollutant is a function of its outdoor level and is influenced by the rate at which it is produced or removed by indoor chemistry. The application of a single-box model suggests that one might expect a substantial contribution from the reaction of NO2 and O3 to the HNO3 indoor level and that isoprene, a body effluent, could generate very reactive secondary products by reaction with ozone.