|
sample type |
marine
porewater
|
digested
sediment 1g/L
|
groundwater
|
| typical concentration |
µmol/L
ppb |
µmol/L
ppb |
µmol/L |
| Method1 | ICP-OES | ||
| wavelength | 257.610 nm -> wavelength table | ||
|
method used
|
no
|
yes
|
no
|
| dilution |
|
-
|
|
| sample size |
|
>
2 mL
|
|
| detction limit |
|
20
ppb
|
|
| standard solutions |
|
Single
element standard in nitric acid 1%
|
|
| Method 2 | GF-AAS | ||
| wavelength | 279.5 nm | ||
|
method used
|
no
|
no
|
yes
|
| dilution |
-
|
||
| sample size |
>
500 µL
|
||
| detction limit |
1
ppb
|
||
| standard solutions |
Single
element standard in nitric acid 1%
|
||
| Method 3 | ICP-MS | ||
| Mass | 55 -> Mass Table | ||
|
method used
|
yes
|
yes
|
yes
|
| dilution |
1:100
|
1:10
|
1:10
|
| sample size |
>
1 mL
|
>
1 mL
|
>
1mL
|
| detction limit |
10
ppb
|
1
ppb
|
1
ppb
|
| standard solutions | |||
| tips + tricks | ICP-OES: 259.370 nm is interfered by both, Na and Mg! | ||