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Article

Selective and Sensitive Quantification of Acetochlor and S-Metolachlor in Maize and Soybean Plant Samples by Gas Chromatography-Tandem Mass Spectrometry

1
Research Institute for Agriculture and Environment, “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, 700490 Iasi, Romania
2
Department of Pedotechnics, Faculty of Agriculture, “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, 700490 Iasi, Romania
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this paper.
Academic Editors: Gianluca Caruso, László Baranyai and Vasile Stoleru
Agriculture 2021, 11(4), 283; https://doi.org/10.3390/agriculture11040283
Received: 10 March 2021 / Revised: 18 March 2021 / Accepted: 22 March 2021 / Published: 25 March 2021
Herbicide residue analysis has gained importance worldwide, mainly for food quality control to minimize potentially adverse impacts on human health. A Gas chromatography-tandem mass spectrometry (GC-MS) method for quantitative analysis of acetochlor and s-metolachlor in maize and soybean straw has been developed, validated and applied to analyze the residues of anilide herbicides. Straw material was dried, homogenized and extracted with a mixture of n-hexane and acetone by an accelerated solvent extraction method. Chromatographic separation of the target analytes was performed on an Agilent 7832 GC equipped with a mass spectrometer detector, a split-splitless injector and an HP-5 MS (5% phenylmethyl siloxane) capillary column (30 m × 0.25 mm × 0.25 µm). Under these parameters, the limit of detection (LOD) values were 0.2 ng g−1 for acetochlor and 0.07 ng g−1 for s-metolachlor, with average recoveries between 86% and 119.7%. The method was validated for acetochlor and s-metolachlor in maize and soybean straw at 0.5 and 0.01 mg kg −1. Furthermore, the final residues of the two herbicides in maize and soybean straw were below the maximum residue limit (MRL) at harvest time. The proposed method is suitable for routine analysis. View Full-Text
Keywords: acetochlor; s-metolachlor; residues; plant samples; GC-MS acetochlor; s-metolachlor; residues; plant samples; GC-MS
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MDPI and ACS Style

Cara, I.G.; Topa, D.; Raus, L.; Calistru, A.E.; Filipov, F.; Jitareanu, G. Selective and Sensitive Quantification of Acetochlor and S-Metolachlor in Maize and Soybean Plant Samples by Gas Chromatography-Tandem Mass Spectrometry. Agriculture 2021, 11, 283. https://doi.org/10.3390/agriculture11040283

AMA Style

Cara IG, Topa D, Raus L, Calistru AE, Filipov F, Jitareanu G. Selective and Sensitive Quantification of Acetochlor and S-Metolachlor in Maize and Soybean Plant Samples by Gas Chromatography-Tandem Mass Spectrometry. Agriculture. 2021; 11(4):283. https://doi.org/10.3390/agriculture11040283

Chicago/Turabian Style

Cara, Irina G., Denis Topa, Lucian Raus, Anca E. Calistru, Feodor Filipov, and Gerard Jitareanu. 2021. "Selective and Sensitive Quantification of Acetochlor and S-Metolachlor in Maize and Soybean Plant Samples by Gas Chromatography-Tandem Mass Spectrometry" Agriculture 11, no. 4: 283. https://doi.org/10.3390/agriculture11040283

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