|
Calibration of eight markers in Dachengqi Tang |
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| Marker |
Calibration |
r2 |
P |
Test range (μg/ml) |
LOD (μg/ml) |
LOQ (μg/ml) |
|
|
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| Naringin |
y = 0.2009 x - 0.2487 |
0.9996 |
<0.001 |
2.50–200 |
0.31 |
0.93 |
| Hesperidin |
y = 0.1996 x - 1.3249 |
0.9982 |
<0.001 |
6.95–556 |
0.43 |
1.74 |
| Aloe emodin |
y = 0.1794 x - 0.267 |
0.9994 |
<0.001 |
1.83–146 |
0.23 |
0.92 |
| Rhein |
y = 0.1728 x - 0.039 |
0.9996 |
<0.001 |
1.75–140 |
0.21 |
0.84 |
| Honokial |
y = 0.1388 x - 0.0792 |
0.9992 |
<0.001 |
1.05–84 |
0.25 |
0.81 |
| Magnolol |
y = 0.1363 x + 0.0025 |
1.0000 |
<0.001 |
2.07–166 |
0.23 |
1.03 |
| Emodin |
y = 0.4250 x + 0.0452 |
0.9992 |
<0.001 |
2.20–176 |
0.28 |
0.83 |
| Chrysophanol |
y = 0.2125 x – 0.0184 |
0.9998 |
<0.001 |
2.05–164 |
0.25 |
0.76 |
|
y: peak area ratio (analyte/internal standard); x: concentration of analyte (μg/ml); LOD (limit of detection): S/N = 3; LOQ (limit of quantification): RSD < 20% | ||||||
Tang et al. Chinese Medicine 2008 3:5 doi:10.1186/1749-8546-3-5 |
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