Table 2.18
Trace metal determinations
in Standard Reference Sediments (values in mg kg- 1
dry weight) (from [40])
I~
Standard Reference Material
Cd
Pb
Cu
Mn
Cr
Ni
Zn
~
NBS 1645 (River Sediment)
<'
'"
certified value
10.2
± 1.5
714
± 28
109
± 19
785
± 97
-'
45.8
± 2.9
1 720
± 169
...
I»
own value
9.6
706
105
793
45.7
1642
i:l
"' "
IAEA SL-l (Lake Sediment)
~
...
'"
certified value
0.26
± 0.5
37.7
± 7.4
30
± 5
104
± 9
44.9
± 8.0
223
± 10
I»
S
own value
0.30
36.8
28
94
42.0
211
til
'"
NRC Canada, MESS-l
§(Marine Sediment)
tb
i:l
certified value
0.59
± 0.10 34.0
± 6.1
25.1
± 3.8
513
± 25
71
± 11
29.5
± 2.7
191
± 17
it
own value
0.66
31.6
21.0
493
68
29.2
191
NRC Canada, BCSS-l
(Marine Sediment)
certified value
0.25
± 0.04 22.7
± 3.4
18.5
± 2.7
229
± 15
123
± 14
55.3
± 3.6
119
± 12
own value
0.25
19.2
20.0
245
116
54.8
103
0.2 g Sediment pressure digested with 3 ml nitric and 1
rnl hydrochloric acid
, No trace amount.
Précédent

- 51/286

Suivant