2013 Fiscal Year Final Research Report
Development of ion analytical system by water only considering low environmental impact
| Project/Area Number |
23615003
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Reliable environmental measurement methods
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| Research Institution | Gunma University |
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Principal Investigator |
MASANOBU Mori 群馬大学, 理工学研究院, 准教授 (70400786)
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| Project Period (FY) |
2011 – 2013
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| Keywords | イオンクロマトグラフィー / 水 / 抽出 / 分離 |
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| Research Abstract |
We developed a novel ion chromatographic system with ion-extraction device (IED), which consists of 1) extraction of ions from a sample by IED, 2) separation of ionic spices by a zwitterionic compound modified silica gel column, and 3) detection of conductivity detector. The analyte ions during the procedures are moved by water only. The conductimetric response was sensitive because the background level was almost 0. Accordingly, the IC system is suggested to be an environmental friendly method owing to low environmental impact. By using the method, we could extract and separate ions in several real water samples. Interestingly, very weak acidic anions such silicate and borate ions were not extracted by IED, while strong inorganic ions were completely extracted. The result can conduct to the online analysis for silica and borate ions in tap water and river water samples.
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