Development of CODMn Online Analyzer Based on photometric Titration
A permanganate index online analyzer is developed based on the luminosity titration method,and the titration endpoint determination method is analyzed,and the performance of the analyzer is determined.In the range of 0～20 mg/L,the results show that the R2 value of the standard curve of the analyzer is 0.9999;the lower quantitative limit is 0.29 mg/L;the repeatability error was 0.42%,the zero drift and range drift were 0.31%and 0.35%,respectively;the glucose test was 0.61%,and the actual water sample comparison test was 6.92%.This analyzer method has high sensitivity,high accuracy,good precision,low lower limit of quantification,and is suitable for site water quality monitoring.
photometric titration methodtitration end point determination algorithmpermanganate indexonline analyzer
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