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Glyphosate detection based on Eu coordination polymer through competitive coordination.

Linglong Yi1, Shangzai Wu2, Guojian Ren2

  • 1Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, China; College of Food Science and Engineering, Hainan University, Haikou 570228, China.

Food Chemistry
|October 10, 2024
PubMed
Summary
This summary is machine-generated.

A new sensor, HNU-89, detects glyphosate herbicide residues in food and water. This coordination polymer offers a sensitive and stable method for monitoring environmental and agricultural contamination.

Keywords:
Competitive coordinationEu coordination polymerGlyphosate detectionRatio fluorescence

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Area of Science:

  • Materials Science
  • Environmental Chemistry
  • Analytical Chemistry

Background:

  • Glyphosate is a prevalent herbicide, raising concerns due to residues in food and water.
  • Residues are linked to adverse health effects, including heart disease and neurotoxicity.
  • There is a critical need for sensitive glyphosate detection methods.

Purpose of the Study:

  • To develop a novel coordination polymer for sensitive glyphosate detection.
  • To investigate the sensing mechanism based on fluorescence changes.
  • To validate the sensor's performance in real-world samples.

Main Methods:

  • Synthesis of a new coordination polymer, HNU-89, using Eu³⁺ and coumarin-3-carboxylic acid (HCCA).
  • Exploration of HNU-89's structural stability across a wide pH range (2-11).
  • Utilizing competitive coordination and fluorescence quenching/enhancement for glyphosate detection.

Main Results:

  • HNU-89 exhibits structural stability due to hydrophobic ligands.
  • Glyphosate detection is achieved via competitive coordination, altering Eu³⁺ and HCCA fluorescence.
  • A low limit of detection (LOD) of 0.08 ppm was established.
  • Successful application of HNU-89 for glyphosate detection in soybean, corn, rice, and tap water.

Conclusions:

  • HNU-89 is a robust and effective sensor for glyphosate detection.
  • The developed method provides a reliable approach for monitoring glyphosate in various matrices.
  • This sensor contributes to addressing concerns regarding herbicide contamination in food and the environment.