ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Coulometric determination of chromium, molybdenum, and tungsten by generated lead(II)
Department of Analytical Chemistry, Faculty of Natural Sciences,
Komenský University, CS-842 15 Bratislava
Abstract: The conditions of electrochemical generation of Pb(II) in the media of
KNO3, NH4NO3 or NH4CIO4 and in the media with pH adjusted within the
range 7.7—8.1 were studied for the use of precipitation reactions of Pb(II) with
Cr042-, MoO42-, and WO42- in the volumetric analysis.
The developed procedures of determination were tested with respect to
standard solutions of K2CrO4, Na2MoO4, and Na2WO4.
The results of coulometric determination of Mo and W in ferromolybdenum
and ferrotungsten obtained under proposed conditions were confronted with
the results obtained by other methods or by the use of standard ferroalloys.
Full paper in Portable Document Format: 371a53.pdf
Chemical Papers 37 (1) 53–59 (1983)
Thursday, October 21, 2021