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Solid-phase extraction with a dibutylmelamine-imprinted polymer as triazine herbicide-selective sorbent
J Matsui1, K Fujiwara, S Ugata
1Laboratory of Synthetic Biochemistry, Faculty of Information Sciences, Hiroshima City University, Hiroshima, Japan.
Journal of Chromatography. A
|September 14, 2000
Summary
New polymer spheres selectively extract triazine herbicides like atrazine using molecular imprinting. Dibutylmelamine (DBM) as a template yields high recovery (97%) and enrichment (50) for reliable agrochemical analysis.
Area of Science:
- Analytical Chemistry
- Polymer Science
Background:
- Triazine herbicides pose environmental and health risks.
- Selective and efficient extraction methods are crucial for their detection.
Purpose of the Study:
- To develop triazine herbicide-selective polymer spheres using molecular imprinting.
- To evaluate their efficacy in solid-phase extraction (SPE) of atrazine.
Main Methods:
- Suspension polymerization was employed to create polymer spheres.
- Dibutylmelamine (DBM) was used as a template molecule for molecular imprinting.
- The imprinted polymers were applied in solid-phase extraction (SPE) for atrazine analysis.
Main Results:
- The DBM-imprinted polymers demonstrated high selectivity for triazine herbicides.
- An atrazine recovery of approximately 97% was achieved.
- An enrichment factor of 50 was obtained, indicating efficient sample concentration.
- The presence of residual DBM did not interfere with agrochemical analyses.
Conclusions:
- Dibutylmelamine (DBM) is a suitable template for creating specific sorbents for triazine herbicides.
- The developed imprinted polymers offer a robust and practical solution for selective herbicide extraction.
- These polymers enhance the reliability and applicability of imprinted polymers in agrochemical analysis.