| 摘要 |
PURPOSE:To make it possible to obtain an accurate quantitative analysis result in a short time, by applying an ultrasonic extraction method using an extractant with pH 8 or larger at the normal temperature, and carrying out a quantitative analysis of the electrolyte component by an ion chromatography. CONSTITUTION:In case of a quantitative analysis of the electrolyte of an electrolyte plate which is formed by combining an electrolyte holding member consisting of lithium aluminate and aluminum oxide, and an electrolyte consisting of lithium carbonate and potassium oarbonate, the electrolyte of the electrolyte plate is extracted by an ultrasonic wave with an extradtant of pH 8 or larger at a normal temperature, and then the potassium ions in the extractant and the all carbonate ions are measured by an ion chromatography, to find the amounts of the lithium carbonate and the potassium carbonate. In such a way, even though aluminum oxide is included in the component materials of the electrolyte plate, the amount of the carbonic acid in the electrolyte can be quantitative-analyzed accurately. And moreover, the loss of the sample component can be prevented by improving the extration efficiency of the carbonates. |
