Construction and performance of a gas purge system

被引：2
|
作者：
Benzing, TR [1 ]
Rao, PSC [1 ]
Body, SA [1 ]
机构：
[1] MICHIGAN STATE UNIV, DEPT CROP & SOIL SCI, E LANSING, MI 48824 USA
来源：
JOURNAL OF ENVIRONMENTAL QUALITY | 1996年 / 25卷 / 06期
关键词：
D O I：
10.2134/jeq1996.00472425002500060038x
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The construction of a gas purge system for measurement of sorption kinetics is described in detail. The system features continuous monitoring of gas-phase organic compounds using a photoionization detector, both open and closed modes of operation, and a convenient flask-switching design. Detector response was found to be adversely affected by small fluctuations in gas Bow rate and by electrical interference from the temperature control system. Modification of the initial design incorporates flow control within the detector loop and uses a proportional temperature controller. Dynamic measurements of Henry's Law constants in the gas purge system are reproducible and agree with literature values for most of the organic compounds tested.
引用
收藏
页码：1436 / 1441
页数：6
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