原子吸光法による鉄鉱石中の微量成分定量方法における試料分解法の比較

DOI NDLデジタルコレクション Web Site Web Site 被引用文献1件 オープンアクセス

書誌事項

タイトル別名
  • A round robin test on the determination of traces of metals in iron ores by atomic absorption spectrophotometry ; With special reference to the open-up of samples with acid attack and alkali fusion
  • ゲンシ キュウコウホウ ニヨル テッコウセキチュウ ノ ビリョウ セイブン テ

この論文をさがす

説明

Interlaboratory tests were conducted to ascertain a good open-up method for the determination of traces of manganese, copper, titanium, nickel, chromium, vanadium, zinc and lead in iron ores by atomic absorption spectrophotometry. The test were cooperated by ten laboratories within the Nippon Steel Corp., placing a special attention on two open-up methods, acid attack and alkali fusion. The two methods were compared from one another with respect to precision and accuracy for each metal. Discussion was also given for the detection limits and lower limits of determination. Based on these observations the open-up with hydrochloric acid turned out to give accurate results for the analysis of standard iron ores. Precision was also quite satisfactory. However, it was recommended to increase the hydrochloric acid concentration of test solutions for the determination of titanium and vanadium. The alkali fusion yielded the lower results for lead and copper, presumably because of the formation of their alloys with platinum crucible during the fusion process. However, the results for manganese, titanium, nickel, chromium, vanadium and zinc were in good agreement with their certified values for standard iron ores. The precision for each metal was also satisfactory. Analytical precision was found to be quite low at the lowest limit of concentration for the method described in JIS M 8204-1971, exceeding 30 % in the coefficient of variation.

収録刊行物

  • 分析化学

    分析化学 28 (5), T15-T22, 1979

    公益社団法人 日本分析化学会

被引用文献 (1)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ