translate English to French: The evidence for particulate matter as opposed to certain gaseous pollutants is strong in the majority of studies, although a broad range of air pollutants has been examined in only a few studies.
La plupart des études apportent de fortes preuves en faveur des particules par opposition à certains polluants gazeux, mais quelques études seulement ont examiné une grande diversité de ces polluants.