2011 Fiscal Year Final Research Report
Evaluation of analytical sensitivity on ICP analysis and application for environmental analysis
| Project/Area Number |
21550095
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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 | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
NARUKAWA Tomohiro 独立行政法人産業技術総合研究所, 計測標準研究部門, 研究員 (10265473)
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| Co-Investigator(Kenkyū-buntansha) |
KUROIWA Takayoshi 独立行政法人産業技術総合研究所, 計測標準研究部門, 研究室付 (60356946)
CHIBA Koichi 独立行政法人産業技術総合研究所, 計量標準管理センター, センター長 (20281066)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 環境分析 |
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| Research Abstract |
When the As species such as As(III), As(V), organoarsenic compounds and Se species[Se(IV) and Se(VI)] are measured with inductively coupled plasma spectrometry, As(V) is found to be more sensitive than As(III), although Se(IV) and Se(VI) show the same sensitivity. The mechanism of the sensitivity difference between As(V) and As(III) was investigated using ICP-MS, and it was elucidated that the formation rates of hydride polyatomic species of As were definitively different between As(V) and As(III) in plasma. The formation rates of polyatomic species depend on the oxidation state of atoms even in plasma, and we proposed the phenomena as the Incoherent Molecular Formation(IMF) effect. And, the mechanisms of IMF effect were investigated and the technique to remove the influence on a determination was discussed.
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