title: [Acidic components of precipitation: humid deposition of S, N and Cl compounds].
abstract: Precipitation samples have been gathered using recipients that differentiate the dry deposition of the humidity in three stations in Spain: one urban (Madrid) and two at base levels (San Pablo de los Montes and Granada). The study is centred on the components of an acid character, for which significant special variations of the sulphate and nitrate concentrations have been obtained. The levels, highest in Madrid and lowest in San Pablo, show the influence of the emitting focal points. A study of the seasonal variations in San Pablo show that the concentrations in summer are more than double than those in winter, probably due to the intervention of the photochemical formation processes of these contaminants. Also studies of humidity deposition are carried out, from which one can observe greater monthly values that are greater in Madrid than in other stations, in spite of having less rainfall. Likewise, episodes of "acid rain" and "red rain" are commented on.
authors.forename: R
authors.initials: R
authors.lastname: Fernández Patier
authors.forename: M
authors.initials: M
authors.lastname: Esteban Lefler
mesh_terms: D015258:Acid Rain / Q000032:analysis*; D002712:Chlorides / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D009566:Nitrates / Q000032:analysis*; D012621:Seasons; D013030:Spain; D013431:Sulfates / Q000032:analysis*
chemical_list: D015258:Acid Rain; D002712:Chlorides; D009566:Nitrates; D013431:Sulfates
vernacular_title: Componentes ácidos de la precipitación: deposición húmeda de compuestos S, N Y Cl.