Table 4 The stability of 19 compounds in FKQJF
Analyte | Spiked (ng/mL) | Ordinary stability | Freeze–thaw stability | Long-term stability | |||
|---|---|---|---|---|---|---|---|
Mean (%) | RSD (%) | Mean (%) | RSD (%) | Mean (%) | RSD (%) | ||
1 | 500 | 117.94 | 11.54 | 106.56 | 7.03 | 103.76 | 12.98 |
250 | 104.48 | 8.53 | 99.57 | 5.60 | 89.00 | 6.73 | |
50 | 80.92 | 10.50 | 112.34 | 7.15 | 86.86 | 11.68 | |
2 | 500 | 95.34 | 14.84 | 86.48 | 6.00 | 112.17 | 7.31 |
250 | 86.35 | 8.62 | 99.07 | 5.02 | 83.50 | 14.58 | |
50 | 106.33 | 9.23 | 98.92 | 4.81 | 87.08 | 8.91 | |
3 | 500 | 109.98 | 11.54 | 90.89 | 7.53 | 93.19 | 6.90 |
250 | 84.19 | 8.09 | 92.61 | 13.98 | 86.77 | 9.78 | |
50 | 93.52 | 12.39 | 84.84 | 6.45 | 81.68 | 14.16 | |
4 | 500 | 84.20 | 5.31 | 102.81 | 7.52 | 104.85 | 7.34 |
250 | 116.00 | 5.04 | 107.25 | 7.93 | 81.20 | 9.27 | |
50 | 108.94 | 8.11 | 91.90 | 5.35 | 118.34 | 5.70 | |
5 | 600 | 94.88 | 10.89 | 113.31 | 8.05 | 82.61 | 8.14 |
300 | 103.80 | 5.21 | 80.22 | 4.40 | 97.44 | 9.91 | |
60 | 81.32 | 11.81 | 109.12 | 7.42 | 113.28 | 4.21 | |
6 | 600 | 91.44 | 14.45 | 88.33 | 12.69 | 102.00 | 14.51 |
300 | 109.93 | 12.98 | 102.20 | 12.84 | 91.27 | 7.41 | |
60 | 88.22 | 8.15 | 115.63 | 7.36 | 83.07 | 6.13 | |
7 | 500 | 109.98 | 11.54 | 90.89 | 7.53 | 97.81 | 11.96 |
250 | 84.19 | 8.09 | 92.61 | 13.98 | 104.72 | 5.20 | |
50 | 93.52 | 12.39 | 84.84 | 6.45 | 118.09 | 13.14 | |
8 | 500 | 103.60 | 11.87 | 88.21 | 10.59 | 87.97 | 7.21 |
250 | 108.42 | 9.44 | 102.50 | 8.24 | 114.13 | 11.46 | |
50 | 95.42 | 14.51 | 80.11 | 11.62 | 109.80 | 5.76 | |
9 | 150 | 92.51 | 13.34 | 113.07 | 8.98 | 98.06 | 13.75 |
75 | 93.01 | 6.11 | 93.19 | 6.90 | 91.97 | 4.96 | |
25 | 104.79 | 12.65 | 86.77 | 9.78 | 80.63 | 9.89 | |
10 | 500 | 103.90 | 7.69 | 81.68 | 14.16 | 107.95 | 7.12 |
250 | 82.57 | 11.25 | 102.95 | 7.36 | 81.88 | 12.37 | |
50 | 95.59 | 9.28 | 118.81 | 13.10 | 95.03 | 9.95 | |
11 | 200 | 112.88 | 4.17 | 86.16 | 10.51 | 89.65 | 10.46 |
100 | 81.64 | 9.85 | 98.74 | 14.77 | 101.38 | 11.50 | |
5 | 92.36 | 14.37 | 94.51 | 12.37 | 87.02 | 7.26 | |
12 | 600 | 85.93 | 4.56 | 93.19 | 4.61 | 96.64 | 14.09 |
300 | 107.50 | 8.26 | 86.83 | 6.24 | 94.37 | 7.35 | |
60 | 115.56 | 13.37 | 84.52 | 8.98 | 115.89 | 10.17 | |
13 | 200 | 113.97 | 5.23 | 104.87 | 6.41 | 114.48 | 6.54 |
100 | 103.56 | 9.41 | 110.44 | 4.41 | 81.78 | 7.88 | |
5 | 84.57 | 12.21 | 97.72 | 11.87 | 102.75 | 5.51 | |
14 | 500 | 101.11 | 11.28 | 84.71 | 9.66 | 99.51 | 14.31 |
250 | 92.68 | 8.37 | 116.86 | 10.11 | 103.10 | 5.36 | |
50 | 80.39 | 14.63 | 88.34 | 7.21 | 91.66 | 12.00 | |
15 | 600 | 82.90 | 5.58 | 118.41 | 13.88 | 88.35 | 11.17 |
300 | 119.43 | 8.54 | 105.94 | 5.17 | 98.43 | 11.78 | |
60 | 89.92 | 7.89 | 114.11 | 5.74 | 100.55 | 9.41 | |
16 | 500 | 88.55 | 10.19 | 95.34 | 14.39 | 95.48 | 14.48 |
250 | 92.98 | 9.71 | 108.03 | 7.63 | 89.82 | 11.06 | |
50 | 83.35 | 10.11 | 105.76 | 13.36 | 105.80 | 14.99 | |
17 | 600 | 89.06 | 13.56 | 115.83 | 10.90 | 117.51 | 8.16 |
300 | 117.99 | 8.45 | 86.68 | 7.22 | 90.66 | 13.65 | |
60 | 81.80 | 13.15 | 82.73 | 12.65 | 87.43 | 14.67 | |
18 | 400 | 106.31 | 5.16 | 104.63 | 14.09 | 118.76 | 7.32 |
200 | 86.65 | 11.80 | 112.10 | 12.30 | 86.82 | 11.71 | |
20 | 107.46 | 10.78 | 88.16 | 4.78 | 114.56 | 10.35 | |
19 | 300 | 96.04 | 14.20 | 94.97 | 5.56 | 85.96 | 7.14 |
150 | 80.66 | 4.23 | 111.86 | 11.51 | 84.29 | 11.25 | |
10 | 96.33 | 12.53 | 103.66 | 13.37 | 116.14 | 5.09 | |