Table 4.

Peaks, description, and excitation/emission maxima of fluorescent DOM.

Peaks	Description	Excitation max (nm)	Emission max (nm)
A	UV humic-like, less aromatic	<260	380–460
C	Visible humic-like, more aromatic	320–360	420–460
M	Marine-humic-like	290–310	370–410
B	Tyrosine-like substances	260	280
T	Protein-like tryptophan	250–300	305–355