Parameters | RSDM method | SDR method | DRZC method | PCCA method | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
PAR | PSE | CET | PAR | PSE | CET | PAR | PSE | CET | PAR | PSE | CET | |
Linearity range (µg mL−1) | 2.500–25.00 | 100.0–1100 | 2.000–50.00 | 2.500–25.00 | 100.0–1200 | 2.000–45.00 | 2.500–25.00 | 100.0–1200 | 2.000–45.00 | 2.500 –25.00 | 100.0 –900.0 | 5.000–50.00 |
Slope | 5.500 × 10−3 | 1.740 × 10−2 | 5.620 × 10−1 | 2.930 × 10−1 | 2.860 × 10−2 | 4.600 × 10−1 | 5.500 × 10−3 | 1.100 × 10−3 | 2.610 × 10−2 | 6.160 × 10−2 | 9.000 × 10−4 | 3.140 × 10−2 |
Intercept | 1.100 × 10−3 | 2.130 × 10−1 | 2.560 × 10−1 | 2.930 × 10−1 | 1.630 × 10−2 | 1.560 × 10−1 | 7.000 × 10−4 | 2.200 × 10−3 | 9.000 × 10−4 | 6.000 × 10−3 | 6.100 × 10−3 | 7.900 × 10−3 |
SE of slope | 1.210 × 10−5 | 8.140 × 10−5 | 3.060 × 10−3 | 1.100 × 10−1 | 1.680 × 10−4 | 1.650 × 10−3 | 3.030 × 10−5 | 7.150 × 10−6 | 8.660 × 10−5 | 6.850 × 10−4 | 4.270 × 10−6 | 5.310 × 10−5 |
SE of intercept | 2.040 × 10−4 | 5.620 × 10−2 | 9.270 × 10−2 | 1.740 | 1.300 × 10−1 | 4.770 × 10−2 | 4.980 × 10−4 | 5.430 × 10−3 | 2.730 × 10−3 | 1.040 × 10−2 | 2.69 × 10−3 | 1.70 × 10−3 |
Correlation coefficient (r) | 1.000 | 1.000 | 1.000 | 1.0000 | 1.000 | 1.0000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 |
Accuracy (n = 6) mean ± SD | 100.4 ± 0.8000 | 99.40 ± 0.3900 | 100.1 ± 0.8700 | 99.57 ± 1.090 | 99.88 ± 1.280 | 100.2 ± 0.7100 | 100.9 ± 0.7100 | 99.68 ± 1.090 | 100.1 ± 0.6300 | 100.7 ± 1.529 | 98.82 ± 0.5310 | 100.4 ± 0.3980 |
Precision (n = 3 × 3) (RSD %)a Repeatability intermediate precision | 0.07800 1.220 | 0.05280 1.010 | 0.07700 1.230 | 0.5280 0.9050 | 0.09100 0.8370 | 0.1550 1.300 | 0.07800 1.220 | 0.2250 0.4290 | 0.2200 0.5200 | 0.1560 0.8810 | 0.2260 0.9970 | 0.1140 0.8000 |
LODb | 0.1520 | 12.91 | 0.6570 | 0.2850 | 17.42 | 0.4470 | 0.3760 | 23.13 | 0.3690 | 0.6430 | 9.900 | 0.2210 |
LOQb | 0.4610 | 39.11 | 1.990 | 0.8640 | 52.78 | 1.350 | 1.140 | 70.08 | 1.120 | 1.948 | 30.00 | 0.6690 |