True concentration
(
µ
g/L)
Found concentration
(
µ
g/L)
Recovery (%)
CV (%)
Spiked sample:
Within-run (
n
= 6)
1
4
8
1.04
4.17
8.25
104.0
104.3
103.1
3.1
2.4
1.8
Between-run (
n
= 12)
1
4
8
1.06
4.06
8.21
106.0
101.5
102.6
4.5
3.7
2.9
Pooled sample:
Within-run (
n
= 6)
1
4
8
8
0.97
4.01
8.14
97.0
100.3
101.7
4.4
3.7
3.2
Between-run (
n
= 12)
1
4
8
1.03
4.11
8.12
103.0
102.8
101.5
5.6
4.8
4.3
Table 1:
Method precision.
