2011 Fiscal Year Final Research Report
High-sensitive analysis by capillary electrophoresis by using highly efficient electrokinetic supercharging and its application to water analysis
| Project/Area Number |
21550081
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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 |
Analytical chemistry
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| Research Institution | Hiroshima University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
ZHONQGI Xu 広島大学, 大学院・工学研究院, 助教 (30457270)
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| Co-Investigator(Renkei-kenkyūsha) |
ITO Kazuaki 近畿大学, 工学部, 教授 (80151497)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 分離分析 |
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| Research Abstract |
With the aim of high-sensitive analysis by capillary zone electrophoresis, electrokinetic supercharging preconcentration method was optimized to give ppt level LOD for rare earth ions etc(e. g. for Er(iii), LOD was 0. 04 nM(6. 7 ng/ L)). The LOD achieved is comparable to that of ICP-MS. By using 900 uL sample in an elongated vial where the distance between the capillary end and the electrode was 40 mm, the analytes could be introduced efficiently. The proposed preconcentration strategy afforded an enrichment factor of 80, 000.
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