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Highly efficient analysis of fipronil and ethiprole in milk using ternary deep eutectic solvent-functionalized
Yehong Han1, Ruiyang Ma2, Juntao Wang3
1College of Food Science and Technology, Hebei Agricultural University, Baoding 071001, China; College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China.
None:
In this study, for the effective determination of fipronil and ethiprole residues in milk, a new analytical approach, which was based on a tip solid-phase extraction (TSPE) by using a newly prepared ternary deep eutectic solvent-functionalized UiO-66 (TDES@UiO-66) as the adsorbent and HPLC-UV detection, was developed. The method integrated the advantages of both the high adsorption capability of the TDES@UiO-66 and the high efficiency of the TSPE, and enabled a rapid extraction of fipronil and ethiprole from milk samples within 8 min by utilizing only 3.0 mg of TDES@UiO-66 adsorbent. The developed method demonstrated an excellent analytical performance, including good linearity (linear rang: 0.02-10 μg/mL; r: 0.9990-0.9997), high precision (relative standard deviations: ≤ 9.9 %), good accuracy (recoveries: 91.1 %-109.8 %), and good sensitivity (limits of quantification: 0.011-0.018 μg/mL). This study provides a rapid and practical approach for the detection of fipronil and ethiprole in different milk samples.
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