Abstract
A method for the determination of lead sulfate is described using the following procedure: The lead sulfate is boiled in a solution of sodium carbonate ; after cooling, the solution is saturated with carbon dioxide and the precipitated lead carbonate is filtered off. The filtrate is boiled with a strongly acid cation exchanger in the hydrogen form and after cooling, the solution and resin are poured into an ion exchange column, containing a short layer of resin. After washing with ater the combined filtrate and wash water is titrated with 0.1 N sodium hydroxide using phenolphthalein as indicator. The method is accurate and gives a maximum relative error of ± 0.4%. The procedure described above has been used for determination of the degree of sulfation in lead-acid battery plates.
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