Environmental Engineering Reference
In-Depth Information
Table 3
Concentration levels and photoproduction rates of various end products generated from photochemical degradation of dissolved organic matter in natural waters and in
photoexperiments conducted conducted on natural waters as well as on standard organic subsatnces
Samples/Sources
of water
DIC (nM h
−
1
)CO
2
(nM
or nM
h
−
1
)
PO
4
3
−
(
μ
g L
−
1
)
Source of
light/Natural
level
H
2
O
2
(nM) ROOHs
(nM)
LMW
compounds
(nM h
−
1
)
CO (nM or
nM h
−
1
)
Hydrocar-
bons (nM)
Ammo-
nium (nM or
nM h
−
1
)
COS
(ng L
−
1
)
DOC
(
μ
M C)
DON
(
μ
M
)
References
Rivers
Suwannee River,
FL (29°N)
Xe lamp
-
-
-
80-630
-
4.1
−
5.1
-
-
-
-
4100-5150-
Miller and Zepp
(
1995
)
Suwannee River,
FL (29°N)
Xe lamp
-
-
-
-
-
41-1500
-
-
-
-
2250-3917-
Valentine and
Zepp (
1993
)
Sturgeon River
(47°N)
Sunlight
(0 m)
-
-
-
2424
-
-
-
-
-
-
2798
-
Ma and Green
(
2004
)
Sturgeon River
(47°N)
Sunlight
(6.5 m)
-
-
-
606
-
-
-
-
-
-
2873
-
Ma and Green
(
2004
)
Sturgeon River
(47°N)
Sunlight
(24 m)
-
-
-
2727
-
-
-
-
-
-
2818
-
Ma and Green
(
2004
)
Sturgeon River
(47°N)
Dark
-
-
-
99970
-
-
-
-
-
-
2798
-
Ma and Green
(
2004
)
Houghton Marsh
(47°N)
Xe lamp
-
-
-
-
-
120-1330 -
-
-
-
2000-3083-
Valentine and
Zepp (
1993
)
Okefenokee
Swamp (31°N)
Xe lamp
-
-
-
-
-
1200
-
-
-
-
3083
-
Valentine and
Zepp (
1993
)
Jordan River
(31°N), East
African Rift
Valley
Natural
level
-
-
-
-
-
-
-
20588
-
8.8-85
-
-
Stiller and Nissen-
baum (
1999
)
En Feshkha (31°N),
East African
Rift Valley
Natural
level
-
-
-
-
-
-
-
<588
-
0-6
-
-
Stiller and Nissen-
baum (
1999
)
(continued)
