カントレコーダーによる高純度アルミニウム中ケイ素,鉄および銅の定量法
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概要
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For the production and quality controls in the manufacturing of high-purity aluminum, a spectrochemical method using a quantorecorder was developed for the determination of trace impurities.<BR>Si, Fe and Cu present in 0.00050.01% concentrations in high-purity aluminum were determined successfully by the direct point-to-plane method by the excitation with overdamped discharge (L=360 μH, C=50 μf, R=20 Ω, sample negative) by the low voltage. Need for the special care to avoid outside contamination at the sample preparation and cutting of the graphite counter electrode was emphasized.<BR>Precision of the method was 1015% by coefficient of variation. The values obtained were in agreement with those by chemical analysis with errors of less than 1030% for each element.
- 社団法人 日本分析化学会の論文