446
K. M. G. Mostofa et al.
(contniued)
Table 2 The fluorescent components identified using PARAFAC modeling on the sample’s EEM and their characteristic peaks as excitation (Ex)–Emission (Em) maxima
Fluorescent components
Components identified and sources
Fluorescence properties
References
Peak C-region
Peak A-region Peak T-region Peak T
UV -region
Peak C
Peak M
p
Peak M
Peak W
Major
Minor
EX/Em (nm)
Allochthonous fulvic acids
(C-like, A-like, and M-like)
Suwannee River Fulvic Acid
(C-like), standard,
dissolved in Milli-Q waters
(n
= 5)
Component 1,
allochthonous
330/462
–
–
–
250/462
–
–
–
Mostofa et al.
(2005a) c
, Mostofa
KMG et al.,
(unpublished data)
Fulvic acid (C-like), Yellow
River, upstream waters,
China
Component 1
335/449
–
–
–
250/449
–
–
–
Mostofa KMG et al.,
(unpublished data)
Fulvic acid (C-like), Yellow
River, mainstream waters,
China
Component 1
340/440
–
295/440
–
250/440
–
–
–
Mostofa KMG et al.,
(unpublished data)
Fulvic acid (C-like), Nanming
River, China
Component 1
300–310/
423–448
–
–
–
235–255/
425–447
–
–
–
Mostofa et al. (2010)
Fulvic acid (C-like)?, urban
sewerage samples RU
Component 5
380/467
–
–
–
260/467
–
–
–
Guo et al. (2010)
Fulvic acid (C-like)?, drinking
water treatment plant RU
Component 3
330/420
–
–
–
<250/420
–
–
–
Baghoth et al. (2010)
Fulvic acid (C-like), The
Second Song Hua Jiang
River, North-East China
Component 1
325–340/
449–458
–
–
–
255–260/
449–458
–
–
–
Mostofa KMG et al.,
(unpublished data)
Fulvic acid (C-like), LiaoHe
River, North-East China
Component 1
330/449
–
–
–
260/449
–
–
–
Mostofa KMG et al.,
(unpublished data)
Fulvic acid (C-like), Yellow
River, China (12 days dark
incubation)
Component 1
300/449
–
–
–
250/449
–
–
–
Mostofa KMG et al.,
(unpublished data)
Fulvic acid (C-like), streams,
springs and thermokarsts,
CPCRW, Alaska
Component 1 c
,
allochthonous
–
Peak′
–
Peak′
–
–
–
Balcarczyk et al.
(2009)