15N, 13C-On-line Measurements with an Elemental Analyser (Carlo Erba, NA 1500), a Modified Trapping Box and a Gas Isotope Mass Spectrometer (Finnigan, MAT 251)
15N, 13C-On-line Measurements with an Elemental Analyser (Carlo Erba, NA 1500), a Modified Trapping Box and a Gas Isotope Mass Spectrometer (Finnigan, MAT 251)
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使用元素分析仪 (Carlo Erba, NA 1500)、改进的捕获箱和气体同位素质谱仪 (Finnigan, MAT 251) 进行 15N、13C 在线测量
DOI：
10.1080/10256019308046151
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发表时间：
1993
影响因子：
1.3
通讯作者：
J. Schikowski
中科院分区：
文献类型：
--
作者：
A. Reineking;R. Langel;J. Schikowski
摘要为了提高气体同位素质谱仪的灵敏度，减少测量时间和样品分析成本，提出了一种用气体同位素质谱仪（Finnigan，MAT 251）在线测定15 N和13 C的方法。为此目的，使用捕集盒（Finnigan，CN型）的毛细管系统的部件将元素分析仪（Carlo Erba，NA 1500）耦合到质谱仪。对天然浓度的~（15）N和~（13）C样品的测定，δ值的不确定度小于0.2 δ‰。检测限为10 μg（总氮或总碳），每小时可分析7个样品。
Abstract An on-line method for the determination of 15N and 13C with a gas isotope mass spectrometer (Finnigan, MAT 251) was developed to improve the sensitivity and to reduce measurements time and the cost of the sample analysis. For this purpose an elemental analyser (Carlo Erba, NA 1500) was coupled to the mass spectrometer using parts of the capillary system of a trapping box (Finnigan, type CN). For the determination of samples with natural concentrations of 15N and 13C the uncertainty of the delta value is less than 0.2 δ‰. The detection limit is in the order of 10 μg (total N or total C) and 7 samples can be analysed per hour.