288
K. M. G. Mostofa et al.
Type of samples/Locations Filtration
size/type
(μm)
Irradiation
time
(h, or, day)
Solar
intensity
(MJm
−2 )
DOC
Before
irradiation
Changes in DOC
Changes in DOC
References
Photoirradiation Microbial Photoirradiation Microbial
(μM
C)
(μM C)
%
Lake Superior (47°N)
0.20
5.5 h (6.5 m)
nd
208
−8
na
−23
na
Ma and Green
(2004)
Lake Superior (47°N)
0.20
15.5 (6.5 m)
nd
208
−48
na
−24
na
Ma and Green
(2004)
Lake Superior (47°N)
0.20
5.5 h (24 m)
nd
208
−51
na
−4
na
Ma and Green
(2004)
Lake Superior (47°N)
0.20
15.5 (24 m)
nd
208
−19
na
−9
na
Ma and Green
(2004)
Lake Erie (42
◦ N)
0.10
Surface water nd
583, 625 525, 575
583, 667 (10–8)
0, (+)7
Winter et al.
(2007)
Luther Marsh
northeast (43
◦ N)
0.10
Surface water nd
817, 958 533, 792
817, 950 (35–17)
0,
−1
Winter et al.
(2007)
Mill Creek east
of Cambridge (43
◦ N)
0.10
Surface water nd
825, 875 683, 583
833, 883 (17–30)
(+)1
Winter et al.
(2007)
Bannister Lake southwest
of Cambridge (43
◦ N)
0.10
Surface water nd
775, 867 617, 642
758, 867 (20–22)
(+)1,
−2 Winter et al.
(2007)
Sanctuary Pond (41
◦ N)
0.10
Surface water nd
917, 992 650, 750
892, 1008 (20–24)
(+)2,
−3 Winter et al.
(2007)
Aldrich humic acid
in deionized water
0.10
Surface water nd
908, 842 675, 600
808, 817 (26–29)
−(11–3) Winter et al.
(2007)
Seawaters
Satilla Estuary
0.20
70 (irradiated) nd
2046
−628
na
−31
na
Moran et al.
(2000)
Satilla Estuary
0.20
70 (irradiated) nd
1972
−706
na
−36
na
Moran et al.
(2000)
Table 1 (continued)
(continued)