title: Air pollution and lung diseases in Oporto Area.
abstract: This area has a rate of patients with obstructive chronic lung disease that is the highest in Portugal and the second in Europe. Levels of pollution observed in 1985/86 and 1986/87 allowed evaluating the effects of concentrations lower than those that usually cause acute episodes. It was observed that even low levels of strong acidity can be related with lung diseases, when observed simultaneously with appreciable levels of black smoke; climatic factors have a synergetic effect.
authors.affiliation: Faculdade de Engenharia, Centro de Engenharia Quimica (INIC), Rua dos Bragas, 4099, Porto Codex, Portugal.
authors.forename: M C
authors.initials: MC
authors.lastname: Alvim Ferraz
authors.forename: M C
authors.initials: MC
authors.lastname: Faria Ferraz
authors.forename: J M
authors.initials: JM
authors.lastname: Ferraz
authors.forename: P I
authors.initials: PI
authors.lastname: Fonseca