Apparent recovery |
5*
|
96.4 |
104.7 |
93.1 |
96.0 |
109.7 |
(%) |
10
|
84.3 |
108.5 |
92.7 |
98.1 |
89.7 |
|
15
|
92.3 |
96.5 |
89.1 |
95.8 |
92.6 |
|
20
|
97.3 |
107.2 |
102.5 |
109.3 |
103.8 |
|
50
|
93.4 |
91.8 |
90.1 |
97.9 |
88.8 |
|
CCα
|
90.4 |
92.0 |
95.7 |
92.1 |
89.8 |
|
Repeatability |
5
|
11.8 |
14.6 |
10.1 |
25.4 |
8.6 |
(RSD, %) |
10
|
19.7 |
12.7 |
20.4 |
11.2 |
21.7 |
|
15
|
26.1 |
9.2 |
17.9 |
19.0 |
29.6 |
|
CCα
|
11.8 |
10.5 |
11.3 |
13.6 |
12.9 |
|
Within-lab |
5
|
29.9 |
39.8 |
39.9 |
32.1 |
17.4 |
reproducibility |
10
|
22.6 |
13.9 |
26.7 |
17.6 |
21.7 |
(RSD, %) |
15 |
37.2 |
34.4 |
39.7 |
30.6 |
37.0 |
|
Decision (CCα, μg limit kg−1) |
|
3.51 |
2.57 |
3.51 |
3.98 |
4.18 |
|
Detection (CCβ, μg capability kg−1) |
|
5.98 |
4.38 |
5.99 |
6.78 |
7.12 |
|
Measurement uncertainty at validation level of 10 μg kg−1 (U, k = 2, %) |
38.0 |
30.2 |
49.4 |
37.8 |
39.0 |
|
Matrix effect (%) |
−5.2 |
−23.6 |
22.3 |
−16.9 |
−18.2 |
|
Comparison of accuracy and repeatability in bovine (n = 10) and pig (n = 10) hair samples spiked at 10 μg kg−1 |
|
Apparent recovery (%) |
95.2 |
109.2 |
84.6 |
101.2 |
82.5 |
|
Repeatability (RSD, %) |
19.6 |
14.1 |
22.6 |
13.1 |
16.9 |
|
t testexp. |
1.358 |
1.448 |
0.947 |
0.368 |
1.239 |
|
F testexp. |
1.915 |
0.925 |
0.487 |
2.721 |
2.787 |
|
Standard curve Slope ± sb |
0.0116 ± 0.0001 |
0.0245 ± 0.0032 |
0.2404 ± 0.0103 |
0.0171 ± 0.0038 |
0.0308 ± 0.0005 |
y-Intercept ± sa |
−0.0009 ± 0.0021 |
0.0408 ± 0.0182 |
−0.1264 ± 0.2725 |
−0.0073 ± 0.0173 |
0.0059 ± 0.0301 |
Correlation coefficient |
0.9996 |
0.9983 |
0.9965 |
0.9873 |
0.9990 |
Standard error |
0.0062 |
0.0264 |
0.3919 |
0.0536 |
0.0255 |
|
Matrix matched calibration |
|
|
|
|
|
curve |
|
|
|
|
|
Slope ± sb |
0.0110 ± 0.0004 −0.0080 ± 0.0236 |
0.0187 ± 0.0020 0.0693 ± 0.1065 |
0.2939 ± 0.1603 −0.1453 ± 1.1592 |
0.0142 ± 0.0327 0.0728 ± 0.6266 |
0.0252 ± 0.0048 0.0642 ± 0.0682 |
sa y–Intercept ± |
0.9961 |
0.9943 |
0.9928 |
0.9812 |
0.9812 |
Correlation coefficient Standard error |
0.0187 |
0.0389 |
0.6812 |
0.0536 |
0.0947 |