A study of regulators for delivering gases containing low concentrations of hydrogen sulfide

被引：0
|
作者：
Talbert, B [1 ]
Benesch, R [1 ]
Haouchine, M [1 ]
Jacksier, T [1 ]
机构：
[1] Chicago Res Ctr, Countryside, IL 60525 USA
来源：
LC GC NORTH AMERICA | 2004年 / 22卷 / 06期
关键词：
D O I：
暂无
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Four regulators have been compared for use with low-level reactive mixtures. It was verified experimentally that a two-stage low-volume regulator made of stainless steel was suitable for use with hydrogen sulfide at a concentration of 100 ppb. This regulator does not require passivation when used with flow rates of at least 100 mL/min. Aluminum and nickel-plated brass regulators of the same design were not suitable. Although a traditional two-stage corrosive service regulator constructed of stainless steel could be used, significant passivation times were required to achieve a comparable steady-state level.
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页码：562 / +
页数：4
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