Published

2023-01-01

Degradation dynamics of organophosphorus insecticides applied in stored soybean (Glycine max L.) during supervised trials.

Dinámica de la degradación de insecticidas organofosforados aplicados en soja almacenada (Glycine max L.) durante ensayos supervisados.

DOI:

https://doi.org/10.15446/rfnam.v76n1.102472

Keywords:

Chlorpyrifos-methyl residues, Dichlorvos residues, Dissipation kinetics, Half-life, Pirimiphos-methyl residues, Postharvest grains (en)
Residuos de clorpirifos-metilo, Residuos de diclorvos, Cinética de disipación, Vida media, Residuos de pirimifos-metilo, Granos de poscosecha (es)

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During storage, soybean kernels can be attacked by insects, which are preventively controlled with insecticides. Information on the dissipation of insecticide residues is crucial to know their final concentrations in food and establish the waiting periods necessary for consumption without health risks, and to determine the minimum waiting period necessary to comply with national and international standards. The aims of this study were to quantify the residue levels of organophosphorus insecticides (dichlorvos, chlorpyrifos-methyl and pirimiphos-methyl) in stored soybean, establish the effect during the storage period, and model the dissipation dynamics. Insecticide residues in soybeans were analyzed at 2, 30, 60, 90 and 120 days after application. An analytical method based on QuEChERS extraction followed by gas chromatography mass spectrometry (GC-MS/MS) determination was validated, with mean recoveries of 82-105%, depending on the spiking levels. Residues decreased below 80% of the initial concentration at 60 days after application and below quantifiable levels at 120 days. Residues followed a pseudo-first-order dissipation dynamics [Ct = C0×exp(-k.t)], with the dissipation constant (k) and half-lives being 0.538 and 1.3 days for dichlorvos, 0.018 and 38.8 days for chlorpyrifos-methyl, and 0.023 and 30.1 days for pirimiphos-methyl, respectively. These results allow concluding that, at the recommended dosage, these insecticides are safe for use on soybean grains stored under standard conditions commonly nowadays used in Argentina.

Durante el almacenamiento, los granos de soja pueden ser atacados por insectos, que se controlan preventivamente con insecticidas. La información sobre la disipación de los residuos de insecticidas es crucial para conocer sus concentraciones finales en los alimentos y establecer los períodos de carencia necesarios para su consumo sin riesgos para la salud, así como para cumplir con las normas nacionales e internacionales. Los objetivos de este estudio fueron cuantificar los niveles de residuos de insecticidas organofosforados (diclorvos, clorpirifos-metilo y pirimifos-metilo) en soja almacenada, establecer el efecto de los días de almacenamiento y modelizar la dinámica de disipación. Los residuos de insecticidas en la soja se analizaron a los 2, 30, 60, 90 y 120 días después de la aplicación. Se validó un método analítico basado en la extracción por QuEChERS seguida de la determinación por cromatografía gaseosa acoplada a espectrometría de masas (GC-MS/ MS), con recuperaciones medias del 82-105%, dependiendo de los niveles de adición. Los residuos disminuyeron por debajo del 80% de la concentración inicial a los 60 días de la aplicación y por debajo de los niveles cuantificables a los 120 días. Los residuos siguieron una dinámica de disipación de pseudoprimer orden [Ct = C0×exp(-k.t)], siendo la constante de disipación (k) y las vidas medias de 0,538 y 1,3 días para diclorvos, 0,018 y 38,8 días para clorpirifos-metilo, y 0,023 y 30,1 días para pirimifos-metilo, respectivamente. Estos resultados permiten concluir que, a la dosis recomendada, estos insecticidas son seguros para su uso en granos de soja almacenados.

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How to Cite

APA

Strada, J., Bruno, C., Nassetta, M. M., Balzarini, M., Conles, M. Y., Rojas, D., Ricca, A. P., Cristos, D. & Martinez, M. J. (2023). Degradation dynamics of organophosphorus insecticides applied in stored soybean (Glycine max L.) during supervised trials. Revista Facultad Nacional de Agronomía Medellín, 76(1), 10167–10175. https://doi.org/10.15446/rfnam.v76n1.102472

ACM

[1]
Strada, J., Bruno, C., Nassetta, M.M., Balzarini, M., Conles, M.Y., Rojas, D., Ricca, A.P., Cristos, D. and Martinez, M.J. 2023. Degradation dynamics of organophosphorus insecticides applied in stored soybean (Glycine max L.) during supervised trials. Revista Facultad Nacional de Agronomía Medellín. 76, 1 (Jan. 2023), 10167–10175. DOI:https://doi.org/10.15446/rfnam.v76n1.102472.

ACS

(1)
Strada, J.; Bruno, C.; Nassetta, M. M.; Balzarini, M.; Conles, M. Y.; Rojas, D.; Ricca, A. P.; Cristos, D.; Martinez, M. J. Degradation dynamics of organophosphorus insecticides applied in stored soybean (Glycine max L.) during supervised trials. Rev. Fac. Nac. Agron. Medellín 2023, 76, 10167-10175.

ABNT

STRADA, J.; BRUNO, C.; NASSETTA, M. M.; BALZARINI, M.; CONLES, M. Y.; ROJAS, D.; RICCA, A. P.; CRISTOS, D.; MARTINEZ, M. J. Degradation dynamics of organophosphorus insecticides applied in stored soybean (Glycine max L.) during supervised trials. Revista Facultad Nacional de Agronomía Medellín, [S. l.], v. 76, n. 1, p. 10167–10175, 2023. DOI: 10.15446/rfnam.v76n1.102472. Disponível em: https://revistas.unal.edu.co/index.php/refame/article/view/102472. Acesso em: 20 mar. 2026.

Chicago

Strada, Julieta, Cecilia Bruno, Mirtha María Nassetta, Monica Balzarini, Martha Yolanda Conles, Dante Rojas, Alejandra P. Ricca, Diego Cristos, and Maria José Martinez. 2023. “) during supervised trials”. Revista Facultad Nacional De Agronomía Medellín 76 (1):10167-75. https://doi.org/10.15446/rfnam.v76n1.102472.

Harvard

Strada, J., Bruno, C., Nassetta, M. M., Balzarini, M., Conles, M. Y., Rojas, D., Ricca, A. P., Cristos, D. and Martinez, M. J. (2023) “) during supervised trials”., Revista Facultad Nacional de Agronomía Medellín, 76(1), pp. 10167–10175. doi: 10.15446/rfnam.v76n1.102472.

IEEE

[1]
J. Strada, “) during supervised trials”., Rev. Fac. Nac. Agron. Medellín, vol. 76, no. 1, pp. 10167–10175, Jan. 2023.

MLA

Strada, J., C. Bruno, M. M. Nassetta, M. Balzarini, M. Y. Conles, D. Rojas, A. P. Ricca, D. Cristos, and M. J. Martinez. “) during supervised trials”. Revista Facultad Nacional de Agronomía Medellín, vol. 76, no. 1, Jan. 2023, pp. 10167-75, doi:10.15446/rfnam.v76n1.102472.

Turabian

Strada, Julieta, Cecilia Bruno, Mirtha María Nassetta, Monica Balzarini, Martha Yolanda Conles, Dante Rojas, Alejandra P. Ricca, Diego Cristos, and Maria José Martinez. “) during supervised trials”. Revista Facultad Nacional de Agronomía Medellín 76, no. 1 (January 1, 2023): 10167–10175. Accessed March 20, 2026. https://revistas.unal.edu.co/index.php/refame/article/view/102472.

Vancouver

1.
Strada J, Bruno C, Nassetta MM, Balzarini M, Conles MY, Rojas D, Ricca AP, Cristos D, Martinez MJ. Degradation dynamics of organophosphorus insecticides applied in stored soybean (Glycine max L.) during supervised trials. Rev. Fac. Nac. Agron. Medellín [Internet]. 2023 Jan. 1 [cited 2026 Mar. 20];76(1):10167-75. Available from: https://revistas.unal.edu.co/index.php/refame/article/view/102472

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