Eine nephelometrische Methode zur Bestimmung kleiner Arsenmengen

Colorimetric Microdetermination of Arsenic

“…for the determination of arsenic are legion for two principal reasons: first, because of the importance of the accurate determination of arsenic in food, biologicals, organic material, etc., and second, because the methods in use are not entirely satisfactory. The literature of arsenic determinations has been surveyed by Minot (20), Kleinmann and Pangritz (16), and How (13).…”

“…6. An example of the nephelometric methods used for the determination of arsenic is that of Kleinmann and Pangritz (16). A reagent consisting of equal parts of 1 per cent potassium molybdate solution and 2 per cent cocaine solution, and 2 parts of N hydrochloric acid gives a turbidity with small quantities of arsenic pentoxide.…”