287
Photoinduced and Microbial Degradation
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 Waynewood, 41°N:
surface water
0.20
7 (irradiated)
nd
440
−75
NMD
−17
NMD
Morris and
Hargreaves
(1997)
Lake Giles, 41°N:
surface water
0.20
7 (irradiated)
nd
91
NPD
NMD
NPD
NMD
Morris and
Hargreaves
(1997)
Lake Tuscaloosa
0.22
70 (irradiated) nd
~235
−97
nm
−41
nm
Vähätalo and
Wetzel
(2004)
Lake Bjän, southern
Sweden (58°N)
0.20
75 h (irradiated) nd
1217
−125
na
−10
na
Bertilsson
and Allard
(1996)
Lake Bjän, southern
Sweden (58°N)
0.20
75 h (irradiated) nd
1217
−9
na
na
−1
Bertilsson
and Allard
(1996)
Lake Savojärvi,
southwestern Finland
0.45
4
h (irradiated) nd
1769
−396
na
−22
na
Corin et al.
(1996)
Extracted humic acid,
Pond water, Norway
0.45
80 h (irradiated) nd
5500
−1925
−35
−35
na
Corin et al.
(1996)
Extracted fulvic acid,
Pond water, Norway
0.45
80
h (irradiated) nd
10417
−2500
−24
−24
na
Corin et al.
(1996)
Lake Superior (47°N)
0.20
5.5 h (0 m)
nd
208
−47
na
−22
na
Ma and Green
(2004)
Lake Superior (47°N)
0.20
15.5 (0 m)
nd
208
−48
na
−23
na
Ma and Green
(2004)
Table
1 (continued)
(continued)