Abstract
The advantages of radio-frequency end-point detection in titrimetric analysis are discussed, and the design of an automatic titrimeter, equipped with variable frequency and employing the heterodyne-beat principle, is outlined. While determinations of cationic tensides by titrating with anionic ones and vice versa cannot be carried out with sufficient precision, the titration of cationic tensides with silver nitrate, titration of sulphated anionic tensides wth barium acetate or benzidine hydrochloride, and the titration of the alkali metal ion in tensides with ▪ lithium chloride in nonaqueous solution are accurate, precise and simple analytical procedures. Manoxol OT can be employed as a titrant in the determination of alkaloids.
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