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. 2021 Oct 14;6(42):28403–28409. doi: 10.1021/acsomega.1c04792

Table 2. Results of Accuracy and Intraday/Interday Precision for Three Concentration Levels Using the GC-MS Methoda (Revised).

  day 1
 day 2
 day 3
  accuracy precision
 accuracy precision
 accuracy precision
concentration (μg/mL) (%recovery) SD RSD (%) (%recovery) SD RSD (%) (%recovery) SD RSD (%)
5 100.30 1.17 1.16 100.62 0.79 0.79 101.44 0.37 0.36
10 100.90 0.74 0.73 100.73 0.96 0.95 100.81 0.20 0.20
15 100.19 0.16 0.16 100.10 0.05 0.05 100.69 0.09 0.09
confidence interval (%) 98.98–101.74 99.64–101.81 99.59–101.85
a

Acceptance criteria: %Recovery: 95–105%; RSD: 3.7% SD = standard deviation. RSD = relative standard deviation.