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Table 2 Evaluation of HPLC–UV performance

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

Parameters Anthraquinone
Linear regression equation y = 117.26 x + 95.449
Coefficient correlation (r) 0.9999
Linear range 6.24–156 μg/L
Instrument detection limit (IDL) 6.24 μg/L
Relative standard deviation (RSD) at 6.24 μg/L (n = 7) 15.68%
CVHorwitz 34.15%