Table 2 Comparison of matrix-matched calibration and solvent calibration of 5 analytes (5 – 1000 μg·L−1)
PGRs | Retention time /min | Regression equations | R2 | Matrix effect /% | LOQs /(μg·kg−1) |
|---|---|---|---|---|---|
ZR | 3.93 | y = 9 130.689 54 x - 19 001.245 95 | 0.997 94 | - 30.06% | 5 |
ZT | 3.64 | y = 5 612.367 08 x - 25 783.183 06 | 0.998 58 | - 17.38% | 5 |
IAA | 4.52 | y = 5 179.841 69 x + 6 839.084 28 | 0.991 75 | - 37.78% | 5 |
GA3 | 4.33 | y = 315.185 05 x + 523.183 00 | 0.990 61 | - 3.35% | 20 |
ABA | 4.60 | y = 557.108 70 x + 980.649 22 | 0.999 06 | 32.34% | 5 |