Abstract
In accordance with the data which were experiment of mixing-ratio in water tank and collecting water samples in situ from natural seawater and urban sewage discharged into the sea along Dalian coast of the northern Yellow Sea in February and April 2012, with quinine sulfate and sodium humate as a reference, the calibration curve was established among CDOM (Chromophoric dissolved organic matter) concentration and fluorescence intensity and reference wave absorption coefficient. To calibration curve as the foundation, the CDOM samples concentration of various sources was determined after analyzing CDOM sample from Dalian coast of the northern Yellow Sea sewage into the sea and natural sea. Based on the comparative analysis on CDOM fluorescence fingerprint, the main component of water CDOM were determined. The results showed that in Dalian coastal waters of the northern Yellow Sea, the main component of CDOM in natural seawater is tryptophan and in urban sewage discharged into the sea are tryptophan, tyrosine, and humic acid. On the basis of comprehensive analysis of CDOM fluorescence and absorption spectral, the thinking of synergy inversion of CDOM absorption spectral slope S by connecting fluorescence and ocean color remote sensing is put forward.
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