Isotope fractionation of molecular oxygen during adsorption/desorption by molecular sieve zeolite

被引：19

作者：

Abe, Osamu ^{[1
]}

机构：

[1] Nagoya Univ, Grad Sch Environm Studies, Nagoya, Aichi 4648601, Japan

来源：

RAPID COMMUNICATIONS IN MASS SPECTROMETRY | 2008年 / 22卷 / 16期

关键词：

D O I：

10.1002/rcm.3634

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

The isotope fractionation of O-2 gas during adsorption onto, and desorption from, molecular sieve zeolite (MSZ) has been confirmed. It has been found that the magnitude of fractionation during gas adsorption for the determination of isotope ratio measurements by dual inlet mass spectrometry is significant during desorption but not during adsorption. The isotope shift will take place during insufficient desorption from MSZ and its magnitude varies with the amount of MSZ and its identity. In order to obtain complete desorption and to remove isotope shifts, the use of the minimum amount of 5A MSZ and additional heating at a temperature of 60 degrees C for a period of 10 min just before gas admission into the mass spectrometer are recommended. Copyright (C) 2008 John Wiley & Sons, Ltd.

引用

页码：2510 / 2514

页数：5

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