Assessing Redox Properties of Natural Organic Matters with regard to Electron Exchange Capacity and Redox-Active Functional Groups

Table 3

Fluorescence peak positions and relative fluorescence intensities of LMWF of LNOM in different redox states.

Samples	3500 LMWF				14000 LMWF
	Ex/Em (nm/nm)	Intensity (a. u.)	Peak type	Transition section	Ex/Em (nm/nm)	Intensity (a. u.)	Peak type	Transition section
Native	270/440	1.66	Humic-like	Quinonoid π-π	275/455	1.40	Humic-like	Quinonoid π-π
−0.49 V	270/450	1.62	Humic-like	Quinonoid π-π	270/460	1.38	Humic-like	Quinonoid π-π
−0.59 V	270445	1.69	Humic-like	Quinonoid π-π	270/445	1.30	Humic-like	Quinonoid π-π