| Project/Area Number |
12640593
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
分離・精製・検出法
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
WATANABE kunihiro Tokyo University of Science, Faculty of Science & Technology, Professor, 理工学部, 教授 (40084470)
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| Co-Investigator(Kenkyū-buntansha) |
ITAGAKI Masayuki Tokyo University of Science, Faculty of Science & Technology, Associate Professor, 理工学部, 助教授 (90266908)
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| Project Period (FY) |
2000 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 2002: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 2001: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2000: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Keywords | Stepladder electrolytic cell / Solution resistance / Flow injection analysis / Electrolytic concentration / Potential gradient / On-line concentration / Zinc / Lead / 微量金属分析 / フロースルー電解セル / 分離濃縮 |
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| Research Abstract |
A novel flow-through electrochemical cell was developed using the electrode potential controlled with iR-drop. The iR-drop was adjusted by solution resistance between working and counter electrodes. This concentration method using the electrochemical cell was applied to the pre-concentration and separation of Pb and Zn. The flow-injection analysis apparatus used in this study had triple channels, and one of them was used for a carrier and buffer solution. Other channels were for detection reagent and sample solution. The metal ions in the eluate obtained from the electrochemical cell were determined with 4-(2-pyridylazo) resorcinol. At a consumption of sample solution 3ml, the detection limit (3δ) is 78 ppb for Pb and 7ppb for Zn. The relative standard deviations (n=4) in the results of analysis on the solution containing Pb 200ppb and Zn 20ppB were 6.5% and 5.7%, respectively. Moreover, pre-concentration and separation were also investigated for the solution containing Pb, Zn and Cu
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