280
500
0
250
280
0
500
250
200
400
Excitation Wavelength (nm)
Emission Wavelength (nm)
(a)
(b)
Plate 8. Excitation–emission matrices of waters at different water treatment stages. (a) Raw water
(b) Clarified water. (Adapted from Bieroza et al., 2009a, with permission from Elsevier.)