The application of DPASV to the determination of the low temperature solubility of lead sulphate in sulphuric acid solutions

1979 ◽  
Vol 57 (9) ◽  
pp. 974-981 ◽  
Author(s):  
Eugene M. L. Valeriote ◽  
Lloyd D. Gallop ◽  
Pedro J. Aragon
Keyword(s):  
Sulphuric Acid ◽  
Pure Water ◽  
Differential Pulse ◽  
Lead Ion ◽  
Acid Solutions ◽  
Lead Acid Battery ◽  
Emf Measurements ◽  
Lead Sulphate ◽  
Standard Enthalpy Of Solution

Measurements of the solubility of lead sulphate in 35% by weight sulphuric acid, pure water, and at two intermediate acid concentrations have been made over the temperature range 25 °C to −50 °C using differential pulse anodic stripping voltammetry.Values of the standard enthalpy of solution, derived from the data and from that of other workers, have been found to be higher than those obtained from emf measurements. The extent of lead sulphate ion pairing is analyzed at 25 °C and discussed. The slowness of equilibration of acid solutions supersaturated with lead sulphate was judged of importance in deciding the relevance of the use of thermodynamically calculated lead ion concentrations with respect to lead acid battery mechanisms.

scholarly journals Electrochemical sensor based on lead ion-imprinted polymer particles for ultra-trace determination of lead ions in different real samples

RSC Advances ◽  
2017 ◽  
Vol 7 (26) ◽  
pp. 16033-16040 ◽  
Author(s):  
Xuan Luo ◽  
Weihong Huang ◽  
Qingye Shi ◽  
Wanzhen Xu ◽  
Yu Luan ◽  
...  
Keyword(s):  
Differential Pulse ◽  
Lead Ions ◽  
Lead Ion ◽  
Ion Imprinted Polymer ◽  
Polymer Particles ◽  
Imprinted Polymer ◽  
Ion Imprinted ◽  
Pulse Voltammetry ◽  
Ultra Trace

In this paper, a self-manufactured lead(ii)-selective electrode, which was based on the use of lead(ii) ion imprinted polymer particles (IIPs) to detect lead ions, was studied using differential pulse voltammetry.

THE DETERMINATION OF ZIRCONIUM WITH BENZOYLPHENYLHYDROXYLAMINE

1960 ◽  
Vol 38 (12) ◽  
pp. 2488-2492 ◽  
Author(s):  
D. E. Ryan
Keyword(s):  
Hydrochloric Acid ◽  
Quantitative Determination ◽  
Sulphuric Acid ◽  
Rare Earths ◽  
Acid Solutions ◽  
Constant Composition ◽  
Hydrochloric Acid Solutions

Zirconium is completely precipitated by benzoylphenylhydroxylamine from 0.5 N acid solutions. The complex formed in sulphuric acid solutions has a constant composition, Zr(C13H10O2N)4, and is used for the direct weighing of zirconium; the factor is 0.0970. The product precipitated from hydrochloric acid solutions must be ignited to the oxide. The reaction is sensitive, 1 p.p.m. of zirconium being detectable, and quantitative determination of 0.2 mg is possible. Thorium and the rare earths do not interfere.

Polarographic Studies on Selenite Ions in Aqueous Hypophosphorous Acid Solutions

1996 ◽  
Vol 61 (7) ◽  
pp. 992-998 ◽  
Author(s):  
Salah A. El-Shatoury
Keyword(s):  
Acid Concentration ◽  
Differential Pulse ◽  
Analytical Determination ◽  
Acid Solutions ◽  
Hypophosphorous Acid ◽  
Pulse Technique ◽  
Polarographic Behaviour

The polarographic behaviour and determination of Se(IV) in hypophosphorous acid solutions of concentrations varying from 0.05 mol l-1 to 4.0 mol l-1 at 25 ± 0.1 °C were investigated. It was shown that the reduction of 5 . 10-4 mol l-1 Se(IV) at the DME takes place in two waves independent on the acid concentration. The reduction waves correspond to the transfer of 6 electrons. A mechanism of the reduction at the DME has been suggested. A method for the analytical determination of Se(IV) species in 0.1 mol l-1 and 0.05 mol l-1 hypophosphorous acid in absence and in presence of 3 . 10-6 mol l-1 Cd(II) and Zn(II) was developed using a differential pulse technique.

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