A simple and fast procedure for fenoxycarb determination in pesticide formulations based on infrared spectrometry

  • Guillermo Quintás Universidad de Valencia-España
  • Sergio Armenta Universidad de Valencia-España
  • Salvador Garrigues Universidad de Valencia-España
  • Miguel de la Guardia Universidad de Valencia-España
Palabras clave: fenoxycarb, pesticide formulations, FTIR, HPLC-UV

Resumen

A fast and environmentally friendly procedure has been developed for Fenoxycarb determination in pesticide formulations by FTIR spectrometry. The method is based on an off-line extraction of the pesticide and stopped-flow measurement of the mid-IR spectra from 4000 to 850 cm-1 using a nominal resolution of 4 cm-1 and accumulating 25 scans. Fenoxycarb was determined using peak area measurements from 1509 to 1499 cm-1 corrected using a two points baseline defined between 1570 and 1403 cm-1. The proposed procedure has been compared with a reference chromatographic method. Results obtained by FTIR were statistically comparable to those found by HPLC. The developed method provided a LOD of 14 µg g-1, corresponding to 0.2 % (w/w) Fenoxycarb in the original sample and a sampling frequency of 60 h-1 with a waste generation of 3 mL CHCl3 for each sample. So, involving a reduction of organic solvent consume as compared with the HPLC method, which requires 55 mL CH3CN per sample, and a 6 times faster alternative than HPLC, which has a sampling frequency of 10 h-1.

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Cómo citar
Quintás, G., Armenta, S., Garrigues, S., & de la Guardia, M. (1). A simple and fast procedure for fenoxycarb determination in pesticide formulations based on infrared spectrometry. Ciencia, 11(4). Recuperado a partir de https://produccioncientificaluz.org/index.php/ciencia/article/view/9202
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