Table 3 Results of the injections for the evaluation of the accuracy of the recovery of the QC negative sample spiked at the LOQ concentration.
From: A proposed limit test for p-chloroaniline impurity in paracetamol pharmaceutical formulations
Accuracy of LOQ | ||||
|---|---|---|---|---|
QC negative sample | Spike (ppb)(ng/mL) | Range | Calculated conc. ppb (ng/mL) | Recovery |
1 | 5 | 100% | 5.367 | 107.34% |
2 | 5 | 5.221 | 104.42% | |
3 | 5 | 5.413 | 108.26% | |
Average | 106.98 | |||
Standard deviation | 0.0188 | |||
RSD% | 1.88 | |||
