CAUTION ON THE OUTGASSING OF POLYTETRAFLUOROETHYLENE VALVES USED IN THE ISOTOPIC ANALYSIS OF HYDROGEN

被引：2

作者：

HEATON, THE

CHENERY, CA

机构：

[1] NERC Isotope Geosciences Laboratory, Keyworth, Nottingham

来源：

CHEMICAL GEOLOGY | 1993年 / 106卷 / 3-4期

关键词：

D O I：

10.1016/0009-2541(93)90047-M

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

When gas samples are contained in vessels having Polytetrafluoroethylene (PTFE) valves, and analysed over a period of several hours on the manifold of an automated mass spectrometer, the gas may become contaminated by air outgassed from the PTFE if the valves have recently been exposed to the atmosphere. For D/H analysis of hydrogen on our mass spectrometer (VG(R) SIRA II) this air contamination produces measurable ostensible depletion in D.

引用

页码：485 / 487

页数：3