GAS-CHROMATOGRAPHIC ANALYSIS AND STORAGE OF GAS SAMPLES FROM THE MIDDLE-EAR

被引：0

作者：

JORGENSEN, L ^{[1
]}

MOLLER, A ^{[1
]}

GRONTVED, A ^{[1
]}

机构：

[1] ODENSE UNIV HOSP,DEPT EAR NOSE & THROAT,DK-5000 ODENSE,DENMARK

来源：

ACTA OTO-LARYNGOLOGICA | 1990年 / 109卷 / 5-6期

关键词：

Dead space; Gas diffusion;

D O I：

10.3109/00016489009125163

中图分类号：

R76 [耳鼻咽喉科学];

学科分类号：

100213 ;

摘要：

Methods for storage and analysis of gas samples were studied prior to measuring the composition of gas in the human middle ear cavity. Storage and analysis of gas samples are beset with several pitfalls. The dead space of the sampling syringe must be considered and the gas sample can equilibrate with the surrounding atmosphere, especially if the analysis cannot be done immediately. In this study the equilibration rate was found to fit an exponential function with a time constant of 0.004 min-1. The time constant was reduced by more than a factor of ten when butyl rubber stoppers were used to seal the syringes. Silicone rubber stoppers were less efficient. Disposable plastic syringes were found just as efficient as 'gas-tight' syringes © 1990 Informa UK Ltd All rights reserved: reproduction in whole or part not permitted.

引用

页码：416 / 420

页数：5