Vol 14: The Potential Applications of Real-Time Monitoring of Water Quality in a Large Shallow Lake Lake Taihu, China Using a Chromophoric Dissolved Organic Matter Fluorescence Sensor.Report as inadecuate



 Vol 14: The Potential Applications of Real-Time Monitoring of Water Quality in a Large Shallow Lake Lake Taihu, China Using a Chromophoric Dissolved Organic Matter Fluorescence Sensor.


Vol 14: The Potential Applications of Real-Time Monitoring of Water Quality in a Large Shallow Lake Lake Taihu, China Using a Chromophoric Dissolved Organic Matter Fluorescence Sensor. - Download this document for free, or read online. Document in PDF available to download.

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This article is from Sensors Basel, Switzerland, volume 14.AbstractThis study presents results from field surveys performed over various seasons in a large, eutrophic, shallow lake Lake Taihu, China using an in situ chromophoric dissolved organic matter CDOM fluorescence sensor as a surrogate for other water quality parameters. These measurements identified highly significant empirical relationships between CDOM concentration measured using the in situ fluorescence sensor and CDOM absorption, fluorescence, dissolved organic carbon DOC, chemical oxygen demand COD and total phosphorus TP concentrations. CDOM concentration expressed in quinine sulfate equivalent units, was highly correlated with the CDOM absorption coefficient r2 = 0.80, p 0.001, fluorescence intensities Ex.-Em. 370-460 nm r2 = 0.91, p 0.001, the fluorescence index r2 = 0.88, p 0.001 and the humification index r2 = 0.78, p 0.001, suggesting that CDOM concentration measured using the in situ fluorescence sensor could act as a substitute for the CDOM absorption coefficient and fluorescence measured in the laboratory. Similarly, CDOM concentration was highly correlated with DOC concentration r2 = 0.68, p 0.001, indicating that in situ CDOM fluorescence sensor measurements could be a proxy for DOC concentration. In addition, significant positive correlations were found between laboratory CDOM absorption coefficients and COD r2 = 0.83, p 0.001, TP r2 = 0.82, p 0.001 concentrations, suggesting a potential further application for the real-time monitoring of water quality using an in situ CDOM fluorescence sensor.



Author: Niu, Cheng; Zhang, Yunlin; Zhou, Yongqiang; Shi, Kun; Liu, Xiaohan; Qin, Boqiang

Source: https://archive.org/



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