Increasing the accuracy of liquid analysis and pH-value control using a liquid-core waveguide

被引：27

作者：

Dress, P

Franke, H

机构：

[1] Lab. für Angewandte Physik, Gerhard-Mercator-Univ. Duisburg, D-47057 Duisburg

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1997年 / 68卷 / 05期

关键词：

D O I：

10.1063/1.1148068

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A liquid-core waveguide (LCW) with pure water as core material has been fabricated by coating the inner core of a glass tube with Teflon AF(R) 2400. Its guiding properties are proven and the guiding losses are determined to be 0.016 dB/cm. A first theoretical model is proposed and its validity is shown by comparing theoretical and experimental results. As an example for application the LCW system is used for optical pH value control. The proposed LCW system exhibits the same accuracy for pH-value determination as commercial electrochemical pH meters. (C) 1997 American Institute of Physics.

引用

页码：2167 / 2171

页数：5

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