校准
分光计
废水
硝酸盐
环境科学
离群值
稳健性(进化)
分析化学(期刊)
化学
遥感
环境化学
环境工程
数学
光学
统计
物理
地质学
生物化学
有机化学
基因
作者
Guenter Langergraber,N. Fleischmann,Franz Hofstädter
标识
DOI:10.2166/wst.2003.0086
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.
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