ジフエニルカルバジドを用いた吸着ストリッピングボルタンメトリーによる鉄鋼中クロムの定量

DOI Web Site Web Site 被引用文献1件 参考文献60件

書誌事項

タイトル別名
  • Determination of Chromium in Iron and Steel by Adsorptive Stripping Voltammetry with Diphenylcarbazide
  • ジフェニルカルバジドを用いた吸着ストリッピングボルタンメトリーによる鉄鋼中クロムの定量
  • ジフェニルカルバジド オ モチイタ キュウチャク ストリッピング ボルタンメトリー ニ ヨル テッコウ チュウ クロム ノ テイリョウ

この論文をさがす

抄録

A sensitive and selective method is described for the determination of chromium at the low ppm level in iron and steel by differential pulse adsorptive cathodic stripping voltammetry with diphenylcarbazide as complexing agent. The complex of chromium(VI) with diphenylcarbazide, Cr(III)-diphenylcarbazone, was adsorbed on a graphite electrode for 5 min with open circuit in a nitric-sulfuric acids mixture solution containing phosphoric acid (pH=ca. 0.6), and subsequently was stripped in another solution (the acid mixture solution in the absence of iron(III) and phosphoric acid) in the potential range 0.3 to -0.1V vs. SCE at a scan rate of 50mV/s. Most of the foreign metals did not interfere by application of the non-electrolytic accumulation step. The calibration curve was linear over a concentration range 9.6×10-8to 1.3×10-6M of chromium (correlation coefficient>0.999) and passed through the origin. The detection limit (3σ) was 2.7×10-8M (1.43ngCr(VI)/ml) for an accumulation time of 5min. The determination of 8 to 500 massppm of chromium in iron and steel was achieved with good precision and accuracy within 1 h by the proposed method without any separation of the matrix. The simple method developed can be also applied to the determination of chromium in obsolete steel scrap.

収録刊行物

  • 鉄と鋼

    鉄と鋼 86 (3), 166-170, 2000

    一般社団法人 日本鉄鋼協会

被引用文献 (1)*注記

もっと見る

参考文献 (60)*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