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元素分析仪-同位素比值质谱仪测定海洋沉积物有机碳稳定同位素方法初探

张媛媛, 贺行良, 孙书文, 朱志刚

张媛媛, 贺行良, 孙书文, 朱志刚. 元素分析仪-同位素比值质谱仪测定海洋沉积物有机碳稳定同位素方法初探[J]. 岩矿测试, 2012, 31(4): 627-631.
引用本文: 张媛媛, 贺行良, 孙书文, 朱志刚. 元素分析仪-同位素比值质谱仪测定海洋沉积物有机碳稳定同位素方法初探[J]. 岩矿测试, 2012, 31(4): 627-631.
ZHANG Yuan-yuan, HE Xing-liang, SUN Shu-wen, ZHU Zhi-gang. A Preliminary Study on the Determination of Organic Carbon Stable Isotope of Marine Sediment by Element Analyzer-Isotope Ratio Mass Spectrometer[J]. Rock and Mineral Analysis, 2012, 31(4): 627-631.
Citation: ZHANG Yuan-yuan, HE Xing-liang, SUN Shu-wen, ZHU Zhi-gang. A Preliminary Study on the Determination of Organic Carbon Stable Isotope of Marine Sediment by Element Analyzer-Isotope Ratio Mass Spectrometer[J]. Rock and Mineral Analysis, 2012, 31(4): 627-631.

元素分析仪-同位素比值质谱仪测定海洋沉积物有机碳稳定同位素方法初探

基金项目: 

中国地质大调查项目(1212011120271)

A Preliminary Study on the Determination of Organic Carbon Stable Isotope of Marine Sediment by Element Analyzer-Isotope Ratio Mass Spectrometer

  • 摘要: 初步建立了利用元素分析仪-同位素比值质谱仪(EA-IRMS)联用技术测定海洋沉积物中有机碳稳定同位素的方法。标定了标准工作参考气CO2(δ13CvsPDB为-32.053‰);验证了仪器的稳定性,标准偏差为0.009‰;当离子流强度范围为0.4~8.7 V时,总体线性为0.0337‰/V,小于仪器线性指标0.06‰/V的要求;同时测定了国家标准物质GBW 04408、国际标准物质Urea和海洋沉积物样品M01的精密度和准确度,标准偏差在0.04‰~0.13‰范围内;并在三家实验室进行了测量比对实验,标准偏差小于0.20‰,满足地质样品再现性0.5‰的要求。所选样品区域δ13Corg 范围为-25.29‰~-22.30‰,表明该海域总有机碳是陆源和海源两种来源的混合物。
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  • 收稿日期:  2011-12-07

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