Identification and Differentiation of Polygonum multiflorum Radix and Polygoni multiflori Radix Preaparata through the Quantitative Analysis of Multicomponents by the Single-Marker Method

Table 2

Correction factors for different instruments and chromatographic columns.

Instrument	Chromatographic column	Emodin monemethyl ether	Physcion-8-O-β-D-glucopyranoside	Emodin-8-O-β-D-glucopyranoside
SHIMADZU LC2030 3D HPLC	Phenomenex C18	1.09	0.49	0.44
	SHIMADZU C18	1.09	0.49	0.44
Waters e2695 HPLC	Phenomenex C18	1.09	0.47	0.45
	SHIMADZU C18	1.08	0.47	0.42
Average value		1.09	0.48	0.44
RSD (%)		0.75	2.41	2.88