E. Chirila et V. Magearu, S2-CONTENT DETERMINATION IN POLLUTED WATE RS, BY MOLECULAR ADSORPTIONSPECTROMETRY WITH PARAAMINODIMETHYLANILINE, Revista de chimie, 45(6), 1994, pp. 508-510
This paper presents a rapid method for the analysis of S2- ions conten
t, in the polluted waters resulting from the petrochemical industry, u
sing the visible absorption spectrometry. The method principle consist
s in getting the methylene blue. by treating the sample with paraamino
dimethylanyline in the presence of FeCl3 and by measuring the absorban
ce at 660-674 nm wavelengths. The optimum operating conditions were de
termined. The method is applicable to the waters having a content of 0
.02 - 20 mg S2-/l