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Dispersive solid phase extraction based on cross-linked hydroxypropyl β-cyclodextrin polymers for simultaneous enantiomeric determination of three chiral triazole fungicides in water.
- Source :
-
Microchimica Acta . Jan2024, Vol. 191 Issue 1, p1-11. 11p. - Publication Year :
- 2024
-
Abstract
- An efficient method is presented for simultaneous enantioselective determination of three chiral triazole fungicides (namely paclobutrazol, hexaconazole, and diniconazole) in water samples by DSPE-HPLC–UV. The perfect chiral separation of the enantiomers was achieved on a Chiralpak IH column within 15 min. In order to adsorb and enrich the analytes from water matrices, a cross-linked hydroxypropyl β-cyclodextrin polymer was synthesized. The prepared material exhibited good adsorption capacity, which was assessed by adsorption kinetic and adsorption thermodynamic experiments. One-variable-at-a-time and the response surface methodology were used to optimize the extraction parameters. Under the optimum sample preparation conditions, good linearity (2.0 ~ 800 µg L−1, R2 ≥ 0.9978), detection limits (0.6 to 1.0 µg L−1), quantitation limits (2.0 to 3.2 µg L−1), recoveries (86.7 ~ 105.8%), and the relative standard deviation (intra-day RSD ≤ 3.7%, inter-day RSD ≤ 5.1%) were obtained, satisfying the requirements of pesticides residues determination. These results demonstrated that the proposed method was applicable for routine determination of chiral triazole fungicide residues in water samples. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00263672
- Volume :
- 191
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Microchimica Acta
- Publication Type :
- Academic Journal
- Accession number :
- 174799137
- Full Text :
- https://doi.org/10.1007/s00604-023-06091-5