title: [Determination of the acidity of particulate matter in the urban and industrial atmospheres].
abstract: A new method is described for the determination of the strong acidity of particulate matter. The method consists in the volumetric titration of an aqueous extract by means of a strong acid. The titration is performed potentiometrically using a glass electrode and the end point is obtained by extrapolation using a Gran's plot. The lowest concentration of strong acid detectable in a sample is about 0.5 microgram/ml expressed as H2SO4. The method has been applied for the determination of the strong acidity content in airborne particulate matter samples and in dusts emitted from industrial sources.
mesh_terms: D000143:Acids / Q000032:analysis*; D000393:Air Pollutants / Q000032:analysis*; D000395:Air Pollutants, Occupational / Q000032:analysis*; D000397:Air Pollution / Q000032:analysis*; D004391:Dust / Q000032:analysis*; D004781:Environmental Exposure; D006801:Humans; D007558:Italy; D011199:Potentiometry / Q000379:methods; D013464:Sulfuric Acids / Q000032:analysis; D014505:Urban Population
chemical_list: D000143:Acids; D000393:Air Pollutants; D000395:Air Pollutants, Occupational; D004391:Dust; D013464:Sulfuric Acids
vernacular_title: Determinazione dell'acidità del materiale particolato in atmosfere urbane ed industriali.