Environmental Engineering Reference
In-Depth Information
Table 1
(continued)
Type of samples/Locations
Filtration
size/type
(
μ
m)
Irradiation
time
(h, or, day)
Solar
intensity
(MJm
−
2
)
DOC
Before
irradiation
Changes in DOC
Changes in DOC
References
Photoirradiation
Microbial Photoirradiation
Microbial
(
μ
M C)
(
μ
M C)
%
Seawater
+
the control
addition (SC)
0.20
14 (Dark
incubation)
nd
515
na
−
39
na
−
8
Miller and
Moran
(
1997
)
Artiicial seawater
+
the
control addition (AC)
0.20
14 (Dark
incubation)
nd
241
na
−
13
na
−
5
Miller and
Moran
(
1997
)
−
10
−
3
Baltic Sea, BY15, Gotland
Deep (57°N)
0.20
(unil-
tered)
6
nd
328
nd
nd
Skoog et al.
(
1996
)
−
10
−
3
Baltic Sea, BY32,
Norrköping Deep (58°N)
0.20
(unil-
tered)
6
nd
347
nd
nd
Skoog et al.
(
1996
)
−
23
−
7
Baltic Sea, F15,
Sydostbrotten (63°N)
0.20 (unil-
tered)
4
nd
331
nd
nd
Skoog et al.
(
1996
)
a
means an increase in DOC concentration occurred during incubation period
b
means incubated uniltered sample iltered before analytical measurements using Ekicrodisc 25 mm syringe ilter with 0.45 mm HT-Tuffryn Membrane
(PALL, Gelman Laboratory)
(-) means losses in DOC concentration,
na
not applicable;
nm
not exactly mentioned
NPD
nosigniicant photochemical degradation;
NMD
no signiicant microbial degradation
