Spiking Levels
HPLC-CAD system A
HPLC-CAD system B
Intermediate Precision
Measured Conc (ppm)
% Recovery
% RSD
Measured Conc (ppm)
% Recovery
% RSD
% RSD
10 ppm PS80
10.12
101.2
3.3
9.87
98.7
4.0
3.7
20 ppm PS80
20.76
103.8
1.8
19.71
98.6
1.7
3.2
30 ppm PS80
30.18
100.6
2.3
29.43
98.1
3.6
3.1
10 ppm PS20
9.10
91.0
4.8
10.02
100.2
4.9
6.8
20 ppm PS20
19.76
98.8
2.3
20.08
100.4
2.8
2.6
30 ppm PS20
29.43
98.1
2.2
29.77
99.2
2.7
2.4
Table 4:
Accuracy/recovery, precision, and intermediate precision results for PS20 and PS80 in the spiking study.
