| Fe同位素的MC-ICP-MS测试方法 |
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| 关键词:Fe isotope MC-ICP-MS mass bias matrix effects |
| 基金项目:国家自然科学基金青年基金(编号: 40803001) |
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| 摘要: |
| High-precision Measurements of Fe Isotopes Using MC-ICP-MS |
| Transitional metal isotope is now a new highly focused research point of isotope geochemistry, but analytical techniques have become the main constraint on its development in recent years. Techniques for high-precision measurements of Fe isotope ratios using Neptune MC-ICP-MS have been reported in details, which include correction of instrument mass bias, assessments of matrix effects, concentration effects and long-term reproducibility. The reproducibilities of the in-house Fe standard HSP I in one month under two different mass bias correct modes (SSB, standard-sample-bracketing and Cu-doped SSB) are δ56FeIRMM-014=0.52‰±0.07‰ (2SD, N=19), δ57FeIRMM-014=0.80‰±0.14‰ (2SD, N=19) and δ56FeIRMM-014=0.54‰±0.08‰ (2SD, N=29), δ57FeIRMM-014=0.84‰±0.13‰ (2SD, N=29), respectively. The resulting Fe isotope ratios for the reference materials show an excellent agreement with the previously reported data. |
| HOU Ke-jun,QIN Yan,LI Yan-he.2012.High-precision Measurements of Fe Isotopes Using MC-ICP-MS[J].Acta Geoscientica Sinica,33(6):885-892. |
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