Evaluation of the Stability of Iron(II) Solutions by Precise Coulometric Titration with Electrogenerated Cerium(IV)
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- ASAKAI Toshiaki
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST)
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- HIOKI Akiharu
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST)
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抄録
An iron(II) solution is often used as a reducing agent in titrimetry and standardized with cerium(IV) or potassium dichromate. Such an iron(II) standard solution is needed for not only titrimetric analyses, but also instrumental ones. Iron(II) is unstable even in a highly acidic solution, mainly due to air-oxidation; therefore, its standardization is required before use. In the present study, the concentration of an iron(II) solution was accurately determined by coulometric titration with electrogenerated cerium(IV), and also by gravimetric titration with a standard potassium dichromate; new useful information concerning the stability of iron(II) solutions in aqueous sulfuric acid was obtained. The current efficiency of the coulometric titration with electrogenerated cerium(IV) was not very high; however, it was found that the titration efficiency was sufficient to assay an iron(II) solution.
収録刊行物
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- Analytical Sciences
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Analytical Sciences 28 (6), 601-606, 2012
社団法人 日本分析化学会
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詳細情報 詳細情報について
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- CRID
- 1390282679236692736
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- NII論文ID
- 10030758083
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- NII書誌ID
- AA10500785
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- COI
- 1:STN:280:DC%2BC38jksVKjug%3D%3D
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- ISSN
- 13482246
- 09106340
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- NDL書誌ID
- 023689211
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- PubMed
- 22729047
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可