Assessing organophosphorus and carbamate pesticides in maize samples using MIP extraction and PSI-MS analyzes.

Autor: Freitas C; Chemistry Institute, Federal University of Goiás, Goiânia, GO 74690-900 Brazil., Machado LS; Chemistry Institute, Federal University of Goiás, Goiânia, GO 74690-900 Brazil., Pereira I; Chemistry Institute, Federal University of Goiás, Goiânia, GO 74690-900 Brazil., da Silva RR; Chemistry Institute, Federal University of Goiás, Goiânia, GO 74690-900 Brazil., Dos Santos GF; Chemistry Institute, Federal University of Goiás, Goiânia, GO 74690-900 Brazil., Chaves AR; Chemistry Institute, Federal University of Goiás, Goiânia, GO 74690-900 Brazil., Simas RC; Chemistry Institute, Federal University of Goiás, Goiânia, GO 74690-900 Brazil., Lima GS; Chemistry Institute, Federal University of Goiás, Goiânia, GO 74690-900 Brazil., Vaz BG; Chemistry Institute, Federal University of Goiás, Goiânia, GO 74690-900 Brazil.
Jazyk: angličtina
Zdroj: Journal of food science and technology [J Food Sci Technol] 2022 Jun; Vol. 59 (6), pp. 2510-2515. Date of Electronic Publication: 2022 May 04.
DOI: 10.1007/s13197-022-05464-7
Abstrakt: The indiscriminate utilization of agrochemicals causes environmental and animal life impacts. In this regard, methodologies have been developed to offer efficiency and quickness for agrochemicals detection. Due to their selectivity and molecular recognition sites, Molecular Imprinted Polymer (MIPs) have been widely employed in some areas, including biotechnology, waste analyses, foodstuff, biological fluids, and others. This work proposed developing a method to determine aminocarb, pirimicarb, dimethoate, omethoate, pyridaphenthion, and fenitrothion pesticides using molecularly imprinted polymer combined with solid-phase extraction (MIP-SPE) for clean-up and paper spray ionization mass spectrometry for their analysis. Extractions analysis for Aminocarb, Pirimicarb, and Omethoate using MIP-SPE showed better performance when compared with MIP and NIP. The R 2 values were found with R 2  > 0.98 for all pesticides, and LODs and LOQs values were 50 and 100 µg kg -1 , respectively. The precision and accuracy were assessed at three concentration levels-low, medium, and high. The precision values (interday and intraday) were below 10%, and the variation of recovery was between 80 and 120% for all pesticides. Therefore, it was possible to verify the presence of two carbamates and five organophosphorus without the necessity of preconcentration samples with precision and good recovery.
Supplementary Information: The online version contains supplementary material available at 10.1007/s13197-022-05464-7.
Competing Interests: Conflict of interestThe authors declare no competing financial interest.
(© Association of Food Scientists & Technologists (India) 2022.)
Databáze: MEDLINE
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