書誌事項
- タイトル別名
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- Detection of trace silicon in high purity iron by molybdosilicic acid blue spectrophotometry following fluoride separation.
- フッカブツ ブンリ モリブドケイサン アオ キュウコウ コウドホウ ニ ヨル コ
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A modified fluoride separation-molybdosilicic acid blue spectrophotometry using masking reagent of iron was applied to determine trace silicon in high purity iron samples. The analytical procedure used is as follows; decompose 1.0 g of sample with a solution of sulfuric acid 2 ml and nitric acid 0.5 ml. After cooling the solution, add phosphoric acid 5 ml as masking reagent and hydrofluoric acid (1 %) 0.5 ml and then sulfuric acid 20 ml, to yield volatile silicon tetrafluoride. Transfer the fluoride completely into a boric acid solution by purging it with nitrogen. Then, move the solution into a 25 ml flask, and add hydrocloric acid and ammonium molybdate to form molybdosilicate. After adding oxalic acid and Ascorbic acid, measure the light absorbance of the solution at 810 nm. By this method, ppm level silicon in commercial high purity irons (4N and 5N) and subppm level silicon in JSS standard high purity iron sample were successfully determined. Recovery (n=10) was 96% for 10μg of silicon and the detection limit givcn by 3σ of blank value was 0.06 ppm.
収録刊行物
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- 分析化学
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分析化学 42 (4), 219-222, 1993
公益社団法人 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
- 1390001204053174912
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- NII論文ID
- 110002906550
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- NII書誌ID
- AN00222633
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- COI
- 1:CAS:528:DyaK3sXisVKmsLg%3D
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- NDL書誌ID
- 3825360
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- ISSN
- 05251931
- http://id.crossref.org/issn/05251931
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可