Table 2.12
Extraction of trace elements from sediments of various organic carbon contents with three extraction systems (from [34])
All results
are in mg kg- 1
Organic
Cadmium
Chromium
Copper
Cobalt
Nickel
Lead
Zinc
carbon
, - - ' - - - - - - ,
, - - ' - - - - - - ,
, - - ' - - - - - - ,
, - - ' - - - - - - ,
, - - ' - - - - - - ,
, - - ' - - - - - - ,
, - - ' - - - - - - ,
Sample
0/0
a
b
c
a
b
c
a
b
c
a
b
c
a
b
c
a
b
c
a
b
c
1
0.15
0.4
0.6
0.6
0.8
1.8
2.4
8
8
9
0
2
2
4
0
4
6
6
6
6
7
8
2
0.43
0.4
0.4
0.4
1.2
4.4 17
12
16
24
4
6
8
4
8
18
8
10
10
3
9
32
3
0.90
0.6
0.8
0.8
1.4
2.0
2.8
8
4
9
4
4
4
4
4
8
14
10
12
14
17
25
4
2.25
0.0
0.0
0.0
1.4
2.8
9.6
8
2
12
4
4
8
2
2
10
20
18
16
14
17
36
5
2.47
2.0
2.0
2.0
4.2
14
20
22
16
28
6
6
8
18
20
26
54
50
56
92
127
175
6
2.81
2.2
2.2
2.2
5.5
15
22
25
16
33
6
6
8
16
20
28
55
52
56
97
122
149
7
2.95
0.6
0.4
0.6
1.8
2.8
8.7
10
2
14
4
4
8
4
4
10
16
16
17
13
18
39
8
3.15
1.0
0.8
1.0
2.6
4.7 10
13
3
19
2
4
4
4
4
10
22
22
26
39
57
84
9
3.35
1.2
1.2
1.2
1.2
4.8 16
31
20
39
6
8
10
20
24
32
40
36
40
30
43
76
10
4.10
1.0
0.8
1.0
4.6
10
12
59
23
74
457
434
478
10
10
16
22
22
22
39
39
54
11
4.85
0.2
0.2
0.2
1.6
2.4
8.4
11
13
4
2
6
2
4
10
14
14
16
15
18
47
12
10.75
0.2
0.2
0.2
1.0
2.8
9.1
15
1
15
6
4
8
4
4
10
28
24
28
27
32
61
13
12.30
2.0
1.2
2.0
3.2
4.4
6.2
19
2
20
4
2
6
8
6
12
54
50
54
114
126
141
a
= 0.05 N ethylenediaminetetraacetic acid (pH 4.8); b
= 1 N hydroxylammonium chloride
+ 25
% acetic acid; c
= 0.5 N hydrochloric acid
s:::
'"
~
N
-