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Ionic liquid-based foam flotation followed by solid phase extraction to determine triazine herbicides in corn.

Liyuan Zhang1, Zhibing Wang2, Na 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.

Talanta
|April 12, 2014
PubMed
Summary

A novel method efficiently extracts eight triazine herbicides from corn. This ionic liquid-based foam flotation and solid phase extraction technique offers sensitive and accurate analysis for food safety.

Keywords:
CornFoam flotationIonic liquidsSolid phase extractionTriazine herbicides

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Area of Science:

  • Analytical Chemistry
  • Environmental Science
  • Food Science

Background:

  • Triazine herbicides are widely used in agriculture, necessitating reliable detection methods.
  • Contamination of food crops like corn with these herbicides poses potential health risks.
  • Existing extraction methods may lack efficiency or require complex procedures.

Purpose of the Study:

  • To develop a sensitive and efficient method for extracting eight triazine herbicides from corn samples.
  • To combine foam flotation and solid phase extraction for simultaneous separation and concentration.
  • To validate the method for routine analysis of triazine herbicides in agricultural products.

Main Methods:

  • Ionic liquid-based foam flotation was employed for initial sample cleanup and analyte separation.
  • Solid phase extraction (SPE) was used for further concentration of the target herbicides.
  • High-performance liquid chromatography (HPLC) was utilized for the final determination of the extracted herbicides.

Main Results:

  • The developed method achieved good linearity for eight triazine herbicides in the range of 2.50–150 µg/kg.
  • Low detection limits (0.74–1.62 µg/kg) were obtained for the target analytes.
  • Successful application to corn samples with high recoveries (85.9%–104.0%) and low relative standard deviations (<5.6%).

Conclusions:

  • The combined ionic liquid-based foam flotation and SPE method is effective for the simultaneous extraction and determination of triazine herbicides in corn.
  • This approach offers a robust and sensitive analytical solution for monitoring herbicide residues in food.
  • The method's high recovery and precision support its suitability for quality control and regulatory purposes.