Journal of Analytical Science and Technology

Table 1 Analytical performance of the UA-MSPE/ HPLC-DAD method

From: Magnetic chitosan-zeolite composite as an adsorbent in ultrasound-assisted magnetic solid phase extraction of tetracyclines in water samples

Parameters	OT	TC	DC
Linearity (µg L⁻¹)	LOQ-400	LOQ-400	LOQ-400
R²	0.9982	0.9985	0.9939
LOD (µg L⁻¹)	0.05	0.35	0.67
LOQ (µg L⁻¹)	0.14	1.05	2.03
Intraday (%RSD), n = 4	1.36	1.89	3.72
Interday (%RSD), n = 3	1.44	0.19	1.14
%ME	0.1	9.0	− 13.1

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