Application of excitation-emission fluorescent matrix spectroscopy in analysis of marine organic matter

摘要

For the first time, on the basis of spectral fluorescent analysis of the surface seawater, we calculated the indices of composition and properties of the dissolved organic matter of the Kara Sea and identified the dominant fluorophors, whose fluorescence intensity quantitatively indicates the supply of terrigenous organic matter. The latter is transformed in various ways in the Ob River estuary and remote areas. The microbial biotransformation is probably the leading process of transformation of terrigenous organic matter actively delivered to the Kara Sea. The areas with an increased content of the humic components caused by formation of the desalinated lens are locally formed in the estuary zone of the Ob River.