A flow system for calibration of dissolved oxygen sensors

被引：11

作者：

Jeroschewski, P ^{[1
]}

zurLinden, D ^{[1
]}

机构：

[1] UNIV ROSTOCK,FACHBEREICH CHEM,D-18055 ROSTOCK,GERMANY

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1997年 / 358卷 / 06期

关键词：

Titration; Water Vapour; Dissolve Oxygen; Temperature Control; Flow System;

D O I：

10.1007/s002160050490

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Well-defined oxygen standard solutions were obtained by the electrolysis of water in a coulometric oxygen generator. The generator was integrated into a flow system that includes the degassing of the carrier electrolyte, the generation of dissolved oxygen and the temperature control of the carrier electrolyte. The current efficiency of oxygen generation was found to be 100% by the Winkler titration method. Calibrations of a home made laboratory sensor and a WTW CellOx dissolved oxygen sensor have been made in a concentration range of 0.02 to 8 mg/L at temperatures from 5 degrees C to 30 degrees C. The calibration of the WTW sensor on water vapour saturated air was compared with the electrochemical calibration method. Both methods gave reliable results provided that the temperature equilibration between the sensor and the ambient air was successful.

引用

页码：677 / 682

页数：6

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[No title captured]

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