Synthesis and Evaluation of Molecularly Imprinted Polymer for the Determination of the Phthalate Esters in the Bottled Beverages by HPLC

Table 2

Recoveries of PAEs in spiked beverages by MIP, NIP, and PLS cartridges in three spiked samples (𝑛=5).

Cartridge	PAEs	Spiked level I		Spiked level II		Spiked level III
		Recovery (%)	RSD (%)	Recovery (%)	RSD (%)	Recovery (%)	RSD (%)
	DMP	91.5	2.9	92.0	3.6	90.4	3.4
MIP	DBP	92.2	1.6	92.8	3.8	93.9	2.6
	DOP	96.2	3.2	96.8	2.9	97.8	1.9
	DMP	4.9	1.9	5.0	2.2	5.2	1.6
NIP	DBP	1.8	1.6	2.1	2.4	2.0	1.7
	DOP	2.6	4.0	2.8	3.7	2.9	2.2
	DMP	84.9	5.2	85.6	4.6	88.9	1.4
PLS	DBP	82.0	3.9	84.3	4.8	87.5	2.5
	DOP	80.2	4.4	83.2	3.9	85.1	3.0

(I) Added: 0.3 mg/L DMP, and 0.3 mg/L DBP, 0.3 mg/L DOP; (II) added: 0.5 mg/L DMP, and 0.5 mg/L DBP, 0.5 mg/L DOP; (III) added: 1.0 mg/L DMP, 1.0 mg/L DBP, and 1.0 mg/L DOP.