Browsing by Author "A.L.J. Rao"

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Cerimetric determination of metals forming pyridine thiocyanate complexes
(Springer-Verlag, 1963) G.S. Deshmukh; A.L.J. Rao
A new procedure for the quantitative determination of Cu, Co, Ni and Cd has been described. It is based on the precipitation of the metals as pyridine thiocyanate complexes and titrating the excess thiocyanate with ceric sulphate using dead stop end point method or the usual visual end point method with vigorous stirring. © 1963 Springer-Verlag.
Determination of thiocyanate by ceric sulphate
(Springer-Verlag, 1962) G.S. Deshmukh; A.L.J. Rao
A method is described for direct cerimetric titration of thiocyanate in presence of iodine monochloride. The end point is detected either visually using ferroin as an indicator or by Dead stop method. Results are good. © 1962 Springer-Verlag.
Diphenyl carbazone as an internal indicator in volumetric analysis - Determination of calcium
(Springer-Verlag, 1961) G.S. Deshmukh; M.G. Bapat; A.L.J. Rao
A method for the volumetric determination of calcium using diphenyl carbazone as indicator has been described. Calcium is precipitated by excess sodium oxalate, the excess oxalate being determined by standard lead nitrate. A study of the possible interferences of barium and magnesium in the above determination is undertaken and it is shown that the above procedure is applicable to the determination of calcium in the presence of magnesium and barium. © 1961 Springer-Verlag.
Oxidation of formate by alkaline ferricyanide
(Springer-Verlag, 1963) G.S. Deshmukh; A.L.J. Rao
A catalytic oxidation of formate by alkaline ferricyanide has been studied. To the formate solution an excess of ferricyanide and osmium tetroxide as catalyst were added and the excess ferricyanide was back titrated with arsenious oxide using the amperometric dead stop end point method. The method is superior to the oxidative determination of formate by alkaline permanganate. © 1963 Springer-Verlag.
Polarographic behaviour of zinc in sodium formate solution
(Springer-Verlag, 1966) G.S. Deshmukh; A.L.J. Rao; S.V.S.S. Murty
A polarographic determination of Zinc can be successfully performed in 1 M sodium formate solution (pH 7.0) as supporting electrolyte using 0.005% of gelatin as maximum suppressor. Well defined waves are obtained for 1-6 mM of zinc and various anions do not cause any interference. The method is also suitable for the determination of zinc and mangenese in presence of each other. © 1966 Springer-Verlag.
Polarography of divalent manganese in sodium formate solution
(Springer-Verlag, 1963) G.S. Deshmukh; A.L.J. Rao; S.V.S.S. Murty
A well defined wave for manganese in 1 M sodium formate solution is reported and its use for the determination of microquantities of the element is indicated. Several foreign ions studied do not cause any interferences. © 1963 Springer-Verlag.
Studies in the two-phase system sodium formate-pyridine - Part VI Extraction of Cadmium
(Springer-Verlag, 1965) G.S. Deshmukh; A.L.J. Rao
The distribution of cadmium in the sodium formate-pyridine system has been studied. The effect of pH, volume of pyridine and molarity of formate have been investigated and it has been found that the distribution obeys Nernst's law. A two-stage batch extraction procedure is necessary for the complete extraction of cadmium. © 1965 Springer-Verlag.
Studies in the Two‐Phase System Sodium Formate‐Pyridine. III. Extraction of copper and Analysis of Copper Pyrites
(1963) G.S. Deshmukh; A.L.J. Rao
Results are given for the extraction of copper by pyridine from sodium formate solutions. An almost complete extraction is obtained by a three‐stage batch extraction technique. A procedure for the separation of iron and copper is described and it is shown that by this extraction method the analysis of copper pyrites is rendered comparitively much easier than the usual classical methods. Copyright © 1963 Verlag GmbH & Co. KGaA, Weinheim