title: [Exposed lead dioxide candles analyzed by a volumetric method, carried out as laboratory and field tests in Innsbruck (author's transl)].
abstract: Working up a great number of "lead-Dioxide-Candles" it took much less time to determine sulphate by a method of volumetric analysis with Ba(ClO4)2 and thoron or methylsulfonazo III as indicators compared with the so far used gravimetric determination of sulphate. With some training everybody will be able to make out the exact endpoint of the titration using thoron as indicator. The limits of error and the results gained from field-trials are shown. The possibilities of making statements of hygienically regional planning are discussed.
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000032:analysis*; D001152:Arsenicals; D001317:Austria; D001391:Azo Compounds; D001464:Barium; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D005069:Evaluation Studies as Topic; D007202:Indicators and Reagents; D007854:Lead; D008722:Methods; D009942:Organometallic Compounds; D011886:Radon; D013431:Sulfates / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D001152:Arsenicals; D001391:Azo Compounds; D007202:Indicators and Reagents; D009942:Organometallic Compounds; D013431:Sulfates; D001464:Barium; D007854:Lead; D011886:Radon
vernacular_title: Zur Frage der titrimetrischen Sulfatbestimmung exponierter Bleikerzen am Beispiel Innsbrucker Labor-und Feldversuche