Environmental Engineering Reference
In-Depth Information
table 10.1
Concentrations of Monomethylmercury, Dimethylmercury, and Total Methylated Mercury for Various Locations and Depths in the Ocean
%HgT as
Location
Depth (m)
MMHg (fM)
a
DMHg (fM)
Σ
Methylated Hg (fM)
b
Σ
methylated
a
References
North Pacifi c
Surface (
150)
NA
NA
100
50 (
50-280)
10
5 (2-24)
Sunderland et al., 2009
Deep (
150)
NA
NA
260
110 (60-470)
19
6 (5-29)
All
NA
NA
170
120 (
50-470)
15
7 (2-29)
Equatorial Pacifi c
Surface (
150)
50
5
nd
nd
Mason and Fitzgerald, 1990
Deep (
150)
100
130 (
50-580)
200
170 (30-670)
240
230 (30-900)
18
14 (
1-61)
Mason and Fitzgerald, 1991
All
90
120 (
50-580)
160
170 (
5-670)
200
230 (nd-900)
15
15 (
1-61)
Mason and Fitzgerald, 1993
North Atlantic
Surface (
200)
—
c
30
30 (
10 -80)
30
30 (
10 -80)
c
0-7
d
Mason et al., 1998
Deep (
200)
—
c
130
80 (10-320)
130
80 (10-320)
c
1-23
d
All
—
c
80
70 (
10 -320)
80
70 (
10 -320)
c
3
4 (0-23)
d
South, equatorial Atlantic
Surface (
150)
50
10
nd
0
Mason and Sullivan, 1999
Deep (
150)
50-200
10 -110
nd-240
1-10
Mediterranean Sea
Surface (
~150)
NA
NA
15-240
NA
Cossa et al., 2009
Deep (
150)
NA
NA
100-430
NA
All
NA
NA
150
110 (
15-430)
14
10 (
1-37)
Surface (
60)
180
100 (50-520)
0.3
0.6 (
0.4-2.6)
180
100 (50-520)
17
10 (3-35)
Kotnik et al., 2007
Deep (
60)
240
120 (60-660)
2
3 (
0.4-12)
240
120 (60-660)
22
11 (6 - 49)
All
220
120 (50-660)
1
2 (
0.4-12)
220
120 (50-660)
20
11 (3 - 49)
Surface (
20)
280
50 (190-390)
0.2
0.4 (
0.9-1)
280
50 (190-390)
20
8 (5-39)
Horvat et al., 2003
Deep (
100)
290
30 (260-330)
4
4 (1-11)
290
30 (260-330)
20
6 (10-32)
All
280
40 (190-330)
1
3 (
0.9-11)
280
40 (190-330)
20
8 (5-39)
