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Oscillographic polarography in quantitative analysis. XVI. Oscillopolarographic microanalysis

R. Kalvoda and I. M. Pavlov√°

CSAV, Prague.

 

Abstract: cf. CA 55, 16263c; 58, 2846c. To det. traces of Cd++ in 0.1M Be(OAc)2 +0.1M HOAc, electrolyze the soln. with a hanging Hg drop cathode (Micka, CA 58, 7610d) for 3-20 min., and record the oscillopolarographic curve dE/dt = f(E) with the same electrode. Dil. the soln. with the same electrolyte free of Cd++ (1:1), repeat the same procedure, add a standard Cd++ soln. to make the concn. of added Cd++ 1, 2, and 3 × 10-7M, and after every addn. repeat electrolysis and recording. From the anodic incisions on the curves dE/dt = f(E), the concn. of Cd++ in the original soln. can be estd. Thus: Pb, Cd, and Cu were detd., in the concn. range of 4 × 10-8 to 8 × 10-7M in acidic solns. of AlNH4(SO4)2, MgSO4, Mg(OAc)2, Be(OAc)2, K3Cr(C2O4)3, K3AsO4, and in HCl.

Full paper in Portable Document Format: 164-5a266.pdf (in German)

 

Chemical Papers 16 (4-5) 266–272 (1962)

Tuesday, June 18, 2024

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