Abstract
An accurate and simple method for the determination of boron in steel is proposed. A pyrohydrolytic method for separating boron has been applied to boron steel. The sample, heated in a furnace, is decomposed by water vapour, and boron in the sample is collected in a dilute sodium hydroxide solution, together with the water vapour, within 20–40 min. The boron content in the receiver is determined by constant-current coulometry using mannitol. Accurate results have been obtained within 30–50 min for several boron steels containing 0.0002–0.01 % of boron.
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