Sources of fluorescent dissolved organic matter in high salinity seawater (Bohai Bay, China).

摘要: Fluorescent dissolved organic matter (FDOM) identified in coastal waters within a large salinity range had been widely reported previous studies, which stated that conservative mixing of terrestrially derived and river-transported FDOM by clear seawaters could account for the relatively low fluorescence signals high seawaters. This study aimed at testing model shallow bay (Bohai Bay, China) with river flow dry season. The water showed salinities varying narrow (30.52 − 2.07), effects on quantum yields therefore less likely introduced complications to data analyses. By applying parallel factor analysis excitation emission matrices samples, we tyrosine-like component, tryptophan-like two humic substances-like components. Based theoretical analysis, found carbon concentrations suspended solid bulk-water samples as well maximum each component spatial distributions not be accounted model. Marine autochthonous processes including microbial activities releasing from resuspended sediment were invoked.