Preparation of Molecular Imprinted Polymer Based on Chitosan as the Selective Sorbent for Solid-Phase Microextraction of Phenobarbital

Table 2

Analysis of phenobarbital in spiked real water samples by SPME-MIP with HPLC-UV

Sample	Added (μg·mL^−1)	Founded (μg·mL^−1)	Recovery (%)	RSD (%)
				Interday	Interday
River water	0	—	—	—	—
	0.015	0.0142	94.8	2.40	4.85
	0.1	0.0966	96.6	2.73	3.15
	0.5	0.4700	94.0	3.59	4.58
	1	0.9750	97.5	4.28	5.38
Well water	0	—	—	—	—
	0.015	0.0138	92.4	4.04	4.58
	0.1	0.0954	95.4	3.76	5.28
	0.5	0.4775	95.5	3.87	6.45
	1	0.9800	98.0	4.16	5.07