多量の塩化ナトリウムと共存するカルシウムとマグネシウムのキレート滴定

DOI NDLデジタルコレクション Web Site Web Site

書誌事項

タイトル別名
  • Chelatometric determination of calcium and magnesium in the presence of large amounts of sodium chloride
  • タリョウ ノ エンカ ナトリウム ト キョウゾンスル カルシウム ト マグネシ

この論文をさがす

説明

Calcium is titrated, at first, by ethyleneglycol-bis(2-aminoethylether)-N, N, N', N'-tetraacetic acid (EGTA) with phthalein complexon as an indicator in glycine-KOH buffer at pH 11. The end-point is located at the break point on the photometric titration curve. Magnesium is titrated separately by ethylenediaminetetraacetic acid (EDTA) with Calmagite as an indicator at pH 10. The end-point can be obtained by processing the photometric titration data with a digital computer. The influences of calcium and sodium ions to the EDTA titration of magnesium ion were examined with theoretical calculations and with experimental works. In the present method, calcium and magnesium {(10-410-3) M} can be determined with a relative standard deviation of 1% or less in the presence of 1 M sodium chloride. Present method was applied to the industrial salts.

収録刊行物

  • 分析化学

    分析化学 25 (9), 616-620, 1976

    公益社団法人 日本分析化学会

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