REMOVAL OF DISSOLVED-OXYGEN FROM WATER - A COMPARISON OF 4 COMMON TECHNIQUES

被引：252
|
作者：
BUTLER, IB [1 ]
SCHOONEN, MAA [1 ]
RICKARD, DT [1 ]
机构：
[1] SUNY STONY BROOK,DEPT EARTH & SPACE SCI,STONY BROOK,NY 11794
来源：
TALANTA | 1994年 / 41卷 / 02期
关键词：
D O I：
10.1016/0039-9140(94)80110-X
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Four common techniques for the removal of dissolved oxygen from water have been examined: boiling at 1 atm, boiling under reduced pressure, purging with N2 and sonication under reduced pressure. After treatment, the residual oxygen in solution was analysed by the Winkler method. Nitrogen purging for 20-40 min at flow rate of 25 mL/s was found to be the most effective oxygen removal method. Boiling at 1 atm was found to be the least effective. None of the techniques evaluated here lead to complete removal of oxygen. The concentration of residual dissolved oxygen after purging for 20-40 minutes with nitrogen is 0.2-0.4 ppm.
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页码：211 / 215
页数：5
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