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Extraction of acetanilides in rice using ionic liquid-based matrix solid phase dispersion-solvent flotation.

Liyuan Zhang1, Changyuan Wang2, Zuotong Li2

  • 1College of Food, Heilongjiang Bayi Agricultural University, Xinfeng Lu 5, Daqing 163319, PR China; College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.

Food Chemistry
|December 31, 2017
PubMed
Summary
This summary is machine-generated.

A new method using ionic liquid-based matrix solid phase dispersion-solvent flotation efficiently determines acetanilide herbicides in rice. This technique offers high recoveries and low detection limits for accurate food safety analysis.

Keywords:
Acetanilide herbicidesIonic liquidsMatrix solid phase dispersionRiceSolvent flotation

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Area of Science:

  • Agricultural Chemistry
  • Analytical Chemistry
  • Environmental Science

Background:

  • Acetanilide herbicides are widely used in agriculture, necessitating reliable detection methods.
  • Residue analysis in food matrices like rice is crucial for food safety and regulatory compliance.
  • Traditional methods may face challenges with complex sample matrices and sensitivity.

Purpose of the Study:

  • To develop and validate an efficient analytical method for determining six acetanilide herbicides in rice samples.
  • To optimize the combined technique of ionic liquid-based matrix solid phase dispersion-solvent flotation (IL-MSPDF) coupled with High-Performance Liquid Chromatography (HPLC).
  • To ensure sensitive and accurate quantification of herbicide residues.

Main Methods:

  • Development of an IL-MSPDF technique for sample preparation.
  • Optimization of key experimental parameters: dispersant type, sample-to-dispersant ratio, pH, extraction solvent, ionic liquid, flotation time, and N2 flow rate.
  • Quantification using High-Performance Liquid Chromatography (HPLC).

Main Results:

  • The optimized method achieved average recoveries ranging from 89.4% to 108.7% for spiked acetanilide herbicides.
  • Relative standard deviations were consistently low, at or below 7.1%.
  • The limits of quantification were found to be between 38.0 and 84.7 µg/kg, demonstrating good sensitivity.

Conclusions:

  • The developed IL-MSPDF-HPLC method is effective and reliable for the determination of acetanilide herbicides in rice.
  • The method offers high efficiency, good accuracy, and sensitivity for residue analysis.
  • This technique contributes to enhanced food safety monitoring of rice products.