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Table 3 Evaluation of the method performance (precision, recovery, and uncertainty measurement)

From: Anthraquinone in Indonesian infusion tea: analysis by HPLC–UV and risk assessment

Parameters

Results

Spiked concentration

8.33 μg/L

Extracted concentration (average)

8.29 μg/L

Percent recovery

96.19–102.98% (average 99.52%)

N

7

RSD, %

2.25

CVHorwitz

32.94

2/3 CVHorwitz

21.96

Uncertainty

8.29 ± 0.42 μg/L