HIGH-PRECISION ISOTOPIC DETERMINATION OF THE O-18/O-16 AND O-17/O-16 RATIOS IN NITROUS-OXIDE

被引：30

作者：

CLIFF, SS ^{[1
]}

THIEMENS, MH ^{[1
]}

机构：

[1] UNIV CALIF SAN DIEGO,DEPT CHEM,LA JOLLA,CA 92093

来源：

ANALYTICAL CHEMISTRY | 1994年 / 66卷 / 17期

关键词：

D O I：

10.1021/ac00089a031

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A decomposition system has been developed for the quantitative conversion of nitrous oxide to molecular nitrogen and oxygen for high-precision mass spectrometric isotopic determinations. N2O is thermally decomposed (>800 degrees C) to N-2 and O-2 in the presence of a gold catalytic surface. N-2 and O-2 are quantitatively separated using previously developed techniques. This system is unique in that it allows measurement of both the O-18/O-16 and O-17/O-16 ratios in N2O. Data are presented for samples of commercially obtained N2O with its corresponding oxygen isotopic composition and decomposition yields.

引用

页码：2791 / 2793

页数：3

共 10 条

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