Simultaneous In Situ Analysis of Carbon and Nitrogen Isotope Ratios in Organic Matter by Secondary Ion Mass Spectrometry
Simultaneous In Situ Analysis of Carbon and Nitrogen Isotope Ratios in Organic Matter by Secondary Ion Mass Spectrometry
复制标题
利用二次离子质谱法同时原位分析有机物中的碳和氮同位素比
DOI：
10.1111/ggr.12209
复制
发表时间：
2018
影响因子：
3.8
通讯作者：
Valley, John W.
中科院分区：
文献类型：
--
作者：
Ishida, Akizumi;Kitajima, Kouki;Williford, Kenneth H.;Tuite, Michael L.;Kakegawa, Takeshi;Valley, John W.
建立了空间分辨率为~ 12 μm的二次离子质谱法同时测定有机质中碳、氮同位素比值的定量方法。用三个法拉第杯和一个电子倍增器同时测量了12c−2、12C13C−、12C14N−和12c15n−的二次离子强度。测量了12c2h -离子，以监测氢化物干扰和纠正质量偏差。UWLA‐1无烟煤的δ13C和δ15N的分析精度分别为0.16‰和0.56‰（2s）。碳的质量偏差与样品的12c2h−/12C−2比值呈负相关。相比之下，氮的质量偏差与氢浓度之间没有相关性。用新方法测定了1878马岗燧石组碳酸盐岩中22个有机质单体的δ13CVPDBand δ 15nair值，范围分别为- 33.8‰~ - 33.3‰和+4.2‰~ 5.8‰。δ13CVPDBand δ 15nair值均值分别为- 33.5±0.25‰和+5.2±0.81‰，在分析精度范围内与大量样品分析报告值一致。
Anin situmeasurement method for simultaneous determination of carbon and nitrogen isotope ratios in organic matter was developed by secondary ion mass spectrometry with a spatial resolution of ~ 12 μm. Secondary ion intensities of12C−2,12C13C−,12C14N−and12C15N−were simultaneously measured by three Faraday cups and one electron multiplier. Ions of12C2H−were measured to monitor hydride interferences and to correct for mass bias. The analytical precisions of δ13C and δ15N values of a reference material (UWLA‐1 anthracite) were 0.16‰ and 0.56‰, respectively (2s). A negative correlation was observed between the mass bias of carbon and12C2H−/12C−2ratios of examined reference materials. In contrast, there was no correlation between mass bias and hydrogen concentration for nitrogen. The δ13CVPDBand δ15NAirvalues of twenty‐two individual globules of organic matter, found in carbonate rock of the 1878 Ma Gunflint Formation, were determined by the new procedure, ranging from −33.8‰ to −33.3‰ and +4.2‰ to 5.8‰, respectively. Means of δ13CVPDBand δ15NAirvalues, −33.5 ± 0.25‰ and +5.2 ± 0.81‰, are consistent with reported values from bulk sample analysis within analytical precision.
登录
查看更多内容
DOI：
10.1029/164gm19
发表时间：
2013-03
期刊：
Geophysical monograph
影响因子：
--
作者：
Yanan Shen;D. Pinti;K. Hashizume
通讯作者：
Yanan Shen;D. Pinti;K. Hashizume
影响因子：
5.8
作者：
Godfrey, Linda V.;Poulton, Simon W.;Fralick, Philip W.
通讯作者：
Fralick, Philip W.
DOI：
10.1007/978-90-481-8794-2_8
发表时间：
2011
期刊：
--
影响因子：
--
作者：
D. Pinti;K. Hashizume
通讯作者：
D. Pinti;K. Hashizume
影响因子：
1.7
作者：
Kita, N. T.;Huberty, J. M.;Valley, J. W.
通讯作者：
Valley, J. W.
单个前寒武纪微化石碳同位素组成的微观结构和分类学相关性的保存和检测
影响因子：
5
作者：
Kenneth H. Williford;T. Ushikubo;J. William Schopf;K. Lepot;K. Kitajima;J. Valley
通讯作者：
J. Valley