Spectrophotometric determination of thiosulfate by its oxidation with iodate.
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- KOH Tomozo
- Department of Chemistry, Faculty of Science, Tokai University
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- KITAMI Katsunobu
- Department of Chemistry, Faculty of Science, Tokai University
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- YONEMURA Yasunobu
- Department of Chemistry, Faculty of Science, Tokai University
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説明
Thiosulfate was oxidized stoichiometrically to sulfate with Iodate in a sulfuric acid medium. The produced iodine, equivalent to the excess iodate, was spectrophotometrically measured as triiodide at 350nm. The complete oxidation of thiosulfate to sulfate using iodate was achieved. The reaction rate was investigated in a medium containing varying amounts of sulfuric acid at room temperature and at 40°C. A linear calibration graph with a negative slope was obtained over the concentration range 4×10-7-4.3×10-5M (mol dm-3)(0.045-4.82ppm) thiosulfate. The relative standard deviation was 0.41% at the 2.5×10-5M thiosulfate level. The proposed method was successfully applied to the determination of thiosulfate in hot spring and lake waters.
収録刊行物
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- Analytical Sciences
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Analytical Sciences 7 (1), 81-85, 1991
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
- 1390282679231668352
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- NII論文ID
- 130003529083
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- COI
- 1:CAS:528:DyaK3MXhsV2rs78%3D
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- ISSN
- 13482246
- 09106340
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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
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- 使用不可