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质谱-元素分析仪测定有机氧同位素组成

质谱-元素分析仪测定有机氧同位素组成[J]. 质谱学报, 2002, 23(4): 220-220.
引用本文: 质谱-元素分析仪测定有机氧同位素组成[J]. 质谱学报, 2002, 23(4): 220-220.
Measurement of Oxygen Isotopic Composition of Organic Matter by TC/EA-MS[J]. Journal of Chinese Mass Spectrometry Society, 2002, 23(4): 220-220.
Citation: Measurement of Oxygen Isotopic Composition of Organic Matter by TC/EA-MS[J]. Journal of Chinese Mass Spectrometry Society, 2002, 23(4): 220-220.

质谱-元素分析仪测定有机氧同位素组成

详细信息
  • 中图分类号: O657.63;O613.3

Measurement of Oxygen Isotopic Composition of Organic Matter by TC/EA-MS

  • 摘要: 对质谱 -元素分析仪 ( TC/ EA-MS)系统测定有机物的实验条件进行了探讨 ,通过不同条件下对几种有机物的实验对比 ,给出了利用 TC/ EA-MS在线测定有机物氧同位素组成的实验条件。结果表明 :当 GC温度为 85℃ ,炉温为 1 32 5℃ ,载气氦压为 0 .0 8~ 0 .1 0 MPa,高压为 3k V,参考气 CO的压力为 0 .0 5 MPa时 ,测定的实验结果误差小于 0 .0 5 % ,达到实验要求。
    Abstract: The oxygen isotopic composition in organic matter is a powerful tool for studying on biogeochemistry and paleoenvironment. TC/EA-MS technology is a simple and precise method for oxygen isotopic composition. TC/EA-MS technology is used to realize the high precise-on line analysis for the oxygen isotopic composition in organic materials. In this work, the Finnigan TC/EA-Delta plus system is used to determine oxygen isotopic composition of cellulose. The results shows that the precision of measurement of oxygen isotopes is less than 0.05% under the experimental condition of 0.05 MPa for reference gas CO, 0.08 MPa for GC temperature and 0.08~0.10 MPa for carrying gas.
  • [1] YehHsuehwen,WangWeimin.Fa
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出版历程
  • 收稿日期:  2002-07-28
  • 修回日期:  1899-12-31
  • 刊出日期:  2002-10-31

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