Aquatic Organic Matter Fluorescence
83
is also always associated with second peak from excitation in the UVC region called peak
A M . Taken together, these two peaks comprise humic-like component M. Peak A M displays
variability in peak position in parallel to peak M, such that excitation and emission maxima
for both type M humic-like peaks are blue-shifted relative to the analogous maxima for
type C humic-like fluorescence (Figure 3.4).
Emission Wavelength (nm)
Excitation Wavelength (nm)
300
350
400
450
500
550
600
650
250
300
350
400
450
700
Emission Wavelength (nm)
Excitation Wavelength (nm)
300
350
400
450
500
550
600
650
250
300
350
400
450
700
Figure 3.4. EEMs for sample showing humic-like C, with peaks C and A C (above) and for a sample
showing humic-like M component, with peaks M and A M (bottom). Note that both peaks in the bottom panel are blue-shifted relative to the peaks in the top panel.
83
is also always associated with second peak from excitation in the UVC region called peak
A M . Taken together, these two peaks comprise humic-like component M. Peak A M displays
variability in peak position in parallel to peak M, such that excitation and emission maxima
for both type M humic-like peaks are blue-shifted relative to the analogous maxima for
type C humic-like fluorescence (Figure 3.4).
Emission Wavelength (nm)
Excitation Wavelength (nm)
300
350
400
450
500
550
600
650
250
300
350
400
450
700
Emission Wavelength (nm)
Excitation Wavelength (nm)
300
350
400
450
500
550
600
650
250
300
350
400
450
700
Figure 3.4. EEMs for sample showing humic-like C, with peaks C and A C (above) and for a sample
showing humic-like M component, with peaks M and A M (bottom). Note that both peaks in the bottom panel are blue-shifted relative to the peaks in the top panel.