2013 Fiscal Year Final Research Report
Development of a future potential primary direct method for quantifying paramagnetic substances
| Project/Area Number |
24750077
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Analytical chemistry
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
MATSUMOTO Nobuhiro 独立行政法人産業技術総合研究所, 計測標準研究部門, 主任研究員 (30358048)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 磁気分析 / 計量学 / 化学計量 / トレーサビリティ / 標準物質 / 国際単位系 / 希土類 / ラジカル |
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| Research Abstract |
Such as coulometry, gravimetry and freezing point depression method, 'primary direct methods of measurement for the amount of substance' plays an important role in both analytical chemistry and chemical metrology. These primary direct methods can measure purities of various chemicals. We have developed a quantitative magnetic analytical method using Curie-Weiss law for future potential primary direct method to quantify atoms with unpaired electrons in diamagnetic matrix. For the experimental validation of principle of this analytical method, powder mixture samples of gadolinium oxide and silicon oxide and three high-purity organic compounds with free radicals were quantified. As the results, this magnetic analytical method successfully quantified the gadolinium ion or stable nitroxyl radicals, although the relative uncertainty of analytical values were approximately 5%.
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