Simultaneous Quantitative Determination of Six Caffeoylquinic Acids in Matricaria chamomilla L. with High-Performance Liquid Chromatography

Table 2

Linear ranges, LLOD, LLOQ, and characteristic parameters of calibration curves.

Name	Calibration equation	r	Linear range (ng)	LLOQ (ng)	LLOD (ng)
NCA	y = 2689399x + 8525	0.999	0.86∼5.40 × 10^3	0.86	0.17
CCA	y = 2557852x + 46	0.999	0.68∼4.24 × 10^3	0.68	0.14
CA	y = 3178855x − 953	0.999	0.77∼4.80 × 10^3	0.77	0.15
ICA	y = 3567273x + 9390	0.999	0.83∼5.20 × 10^3	0.83	0.17
ICB	y = 2821879x + 1015	0.999	0.70∼4.36 × 10^3	0.70	0.14
ICC	y = 3200246x + 678	0.999	0.79∼4.92 × 10^3	0.79	0.16

Note. y: peak area at 327 nm; x: injection amount (ng); r: correlation coefficient for 12 data points in the calibration curves (n = 2); LLOQ: lower limit of quantification (S/N = 10); LLOD: lower limit of detection (S/N = 3).