改进型气体分析离子附加质谱仪的设计与性能。

Design and performance of an evolved gas analysis ion attachment mass spectrometer.

机构信息

Department of Chemistry, Faculty of Sciences and Engineering, Meisei University, Hodokubo 2-1-1, Hino, Tokyo 191-8506, Japan.

出版信息

Rapid Commun Mass Spectrom. 2010 Sep 15;24(17):2625-30. doi: 10.1002/rcm.4682.

DOI:10.1002/rcm.4682

PMID:20740539

Abstract

We designed a simple evolved gas analysis (EGA) system to act as a sampler between solid samples at atmospheric pressure and the high vacuum inside a mass spectrometer. The newly designed stainless steel system is simple, small and rugged and fulfills all the basic requirements for EGA. The temperature is programmable with 60 degrees C/min as the maximum heating rate and the temperature range is up to 600 degrees C. With this system coupled with lithium ion attachment mass spectrometry (IAMS), it is possible to study the temperature-programmed decomposition of a number of solid materials by detecting any chemical species on a real-time basis. For illustrative purposes, EGA-IAMS experiments of polyethylene polymers have been conducted.

摘要

我们设计了一个简单的进化气体分析（EGA）系统，作为常压下固体样品和质谱仪内高真空之间的采样器。新设计的不锈钢系统简单、小巧、坚固，满足 EGA 的所有基本要求。温度可通过 60 度/分钟的最大加热速率编程，温度范围可达 600 度。通过将该系统与锂离子附加质谱（IAMS）结合使用，可以通过实时检测任何化学物质来研究许多固体材料的程序升温分解。为了说明问题，进行了聚乙烯聚合物的 EGA-IAMS 实验。