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K. M. G. Mostofa et al.
Samples
Fluorescence properties
Peak A-region Peak T-region
Peak T
UV -region References
Standard substances/Component
type
Peak C-region
Peak C
Peak M
p
Peak W
Ex/Em (nm)
p-Hydroxybenzoic
acid dissolved in
sea water
–
–
–
–
280/388
–
Nakajima (2006)
Methyl salicylate
366/448
302/448
–
–
–
–
Senesi (1990a)
p-Hydroxy
benzaldehyde dissolved
in Milli-Q waters
–
325/365
–
–
–
235/353
Nakajima (2006)
p-Hydroxy
benzaldehyde dissolved
in sea waters
330/372
–
–
240/389
–
–
Nakajima (2006)
p-Hydroxy
acetophenone dissolved
in Milli-Q waters
–
310/347
–
–
–
225/353
Nakajima (2006)
p-Hydroxy
acetophenone dissolved
in sea waters
340/382
–
–
240/386
–
–
Nakajima (2006)
Protocatechuic acid (ionized)
340–370/455
–
–
–
–
–
Senesi (1990a)
3-Hydroxycinnamic acid
–
310/407
–
–
–
–
Senesi (1990a)
Caffeic acid
365/450
–
–
–
–
–
Senesi (1990a)
Ferulic acid
350/440
–
–
–
–
–
Senesi (1990a)
ß-Naphthols (ionized)
350/460
–
–
–
–
–
Senesi (1990a)
Xanthone
–
410/456
–
–
–
–
Senesi (1990a)
3-Hydroxyxanthone
343, 365/465
–
–
–
–
–
Senesi (1990a)
3-Hydroxy quinoline
350/450
–
–
–
–
–
Senesi (1990a)
M
p means fluorescence Ex/Em maxima of fulvic acid which is photobleached by photochemical processes or by any other natural processes
a
Indicates the organic components identified using PARAFAC modeling on sample EEM data and river EEM data is deducted from samples in case of algae
b
Ranges expresses the authentic standard at various concentrations (1–5 mg L
−1 ) and mechanical reproducibility
peaḱ indicates the occurrence of a peak that do not indentify
EPS
extracellular polymeric substances
Table 1 (contniued)