Food Chemistry· 2026Q1
Miniaturized UAE–SPE-d-SPE–HPLC–UV method for trace determination of triazine herbicides in corn tortillas
- 0citations
- Q1SCImago
- 2026year
Short summary
A new miniaturized HPLC-UV method simultaneously extracts and quantifies triazine herbicides atrazine and simazine in corn tortillas with high linearity (R2 > 0.99) and low detection limits (20-60 ng g-1).
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Key points
- Developed a miniaturized UAE–SPE-d-SPE–HPLC–UV method for simultaneous extraction and determination of atrazine and simazine.
- Achieved high linearity (R2 > 0.99) in the range of 50–250 ng g−1.
- Obtained detection and quantification limits of 20–50 ng g−1 and 20–60 ng g−1, respectively.
- Reported recoveries of 71% for simazine and 76% for atrazine, with precision less than 7.5%.
- Method proved robust across tortillas from different maize varieties and origins.
AI-generated from the title and abstract; the full text is not read.
Abstract
An analytical methodology was developed for simultaneous extraction and determination of triazine herbicides atrazine and simazine in maize tortillas. This method combined ultrasound-assisted extraction (UAE) using a methanol:water mixture followed by simple and rapid miniaturized solid-phase extraction-dispersive solid-phase extraction (SPE-d-SPE) concentration and a clean-up step using C18/PS-DVB sorbents. Only 100 μL of the extract was obtained through effective matrix simplification. This allowed determination of herbicides using HPLC–UV with good linearity (R 2 > 0.99) (range of 50–250 ng g −1 ) and limits of detection and quantification in the ranges of 20–50 and 20–60 ng g −1 for atrazine and simazine, respectively, enabling monitoring at the maximum residue limit (MRL) established for maize (250 ng g −1 ). Precision was less than 7.5%, and recoveries were 71% for simazine and 76% for atrazine. The proposed method proved robust across tortillas prepared from maize of different varieties and origins in Mexico. This approach provides a reliable and miniaturized tool for trace-level determination of triazine herbicides, supporting food safety monitoring of maize-based products.
The authors' abstract, as published at the source. Food Chemistry, 2026 · DOI ↗
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Field: Food Science
Food ScienceAgricultural and Biological Sciences