A multivariate calibration procedure for UV/VIS spectrometric quantification of organic matter and nitrate in wastewater

被引：166

作者：

Langergraber, G

Fleischmann, N

Hofstädter, F

机构：

[1] Univ Agr Sci Vienna, Dept Sanitary Engn & Water Pollut Control, IWGA SIG, BOKU, A-1190 Vienna, Austria

[2] Scan Messtech GmbH, A-1020 Vienna, Austria

来源：

WATER SCIENCE AND TECHNOLOGY | 2003年 / 47卷 / 02期

关键词：

in-situ; multivariate calibration; on-line; PLS; real-time; UV/VIS spectrometry;

D O I：

10.2166/wst.2003.0086

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A submersible UV/VIS spectrometer for in-situ real-time measurements is presented. It utilises the UV/VIS range (200-750 nm) for simultaneous measurement of COD, filtered COD, TSS and nitrate with just a single instrument. A global calibration is provided that is valid for typical municipal wastewater compositions. Usually high correlation coefficients can be achieved using this standard setting. By running a local calibration improvements concerning trueness, precision and long term stability of the results can be achieved. The calibration model is built by means of PLS, various validation procedures and outlier tests to reach both high correlation quality and robustness. This paper describes the UV/VIS spectrometer and the calibration procedure.

引用

页码：63 / 71

页数：9

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