Journal
JOURNAL OF SEPARATION SCIENCE
Volume 37, Issue 12, Pages 1503-1510Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201400125
Keywords
Dispersive solid-phase extraction; High-performance liquid chromatography; Magnetic nanoparticles; Microwave-assisted extraction; Poly(ionic liquids)
Categories
Funding
- National Natural Science Foundation of China [21075008]
- Beijing Natural Science Foundation [2132048]
Ask authors/readers for more resources
Novel poly(ionic liquids) were synthesized and immobilized on prepared magnetic nanoparticles, which were used to extract pesticides from fruit and vegetable samples by dispersive solid-phase extraction prior to high-performance liquid chromatography analysis. Compared with monomeric ionic liquids, poly(ionic liquids) have a larger effective contact area and higher viscosity, so they can achieve higher extraction efficiency and be used repeatedly without a decrease in analyte recovery. The immobilized poly(ionic liquids) were rapidly separated from the sample matrix, providing a simple approach for sample pretreatment. The nature and volume of the desorption solvent and amount of poly(ionic liquid)-modified magnetic material were optimized for the extraction process. Under optimum conditions, calibration curves were linear (R2 > 0.9988) for pesticide concentrations in the range of 0.100-10.000 g/L. The relative standard deviations for repeated determinations of the four analytes were 2.29-3.31%. The limits of detection and quantification were 0.29-0.88 and 0.97-2.93 g/L, respectively. Our results demonstrate that the developed poly(ionic liquid)-modified material is an effective absorbent to extract pesticides from fruit and vegetable samples.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available