Dissipation kinetics and exposure of spirotetramat and pymetrozine in open fields, a prelude to risk assessment of green bean consumption.

Autor: Malhat F; Pesticide Residues and Environmental Pollution Department, Central Agricultural Pesticide Laboratory, Agricultural Research Center, Dokki, 12618, Giza, Egypt., Bakery M; Pesticide Residues and Environmental Pollution Department, Central Agricultural Pesticide Laboratory, Agricultural Research Center, Dokki, 12618, Giza, Egypt., Abdallah O; Pesticide Residues and Environmental Pollution Department, Central Agricultural Pesticide Laboratory, Agricultural Research Center, Dokki, 12618, Giza, Egypt., Youssef M; Chemistry Department, Faculty of Science, Helwan University, Helwan, Egypt., Ghany WAE; Plant Protection Department, Faculty of Agriculture, Ain Shams University, Cairo, Egypt., Abdallah A; Chemistry Department, Faculty of Science, Helwan University, Helwan, Egypt., Greish S; Plant Protection Department, Faculty of Agriculture, Suez Canal University, Ismailia, 41522, Egypt. sarahgreish@agr.suez.edu.eg., Gaber MM; Plant Protection Department, Faculty of Agriculture, Suez Canal University, Ismailia, 41522, Egypt., Purnama I; Lancang Kuning University, Pekanbaru, Indonesia., Abdelsalam S; Pesticide Residues and Environmental Pollution Department, Central Agricultural Pesticide Laboratory, Agricultural Research Center, Dokki, 12618, Giza, Egypt., Ahmed MT; Plant Protection Department, Faculty of Agriculture, Suez Canal University, Ismailia, 41522, Egypt.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2023 Apr; Vol. 30 (20), pp. 57747-57758. Date of Electronic Publication: 2023 Mar 27.
DOI: 10.1007/s11356-023-26100-7
Abstrakt: Determination and dissipation kinetics of pymetrozine and spirotetramat in green bean were studied using a QuEChERS method coupled to high-performance liquid chromatography-tandem mass spectrometry. Pymetrozine recoveries ranged between 88.4-93.7%, with relative standard deviation (RSD) of 5.5-14.4%. For spirotetramat the recoveries ranged between 91.7-103.4%, and the RSD were in the range of 3.2 to 12.4%. The limits of quantification (LOQs) were 0.01 mg/kg and 0.005 mg/kg for pymetrozine and spirotetramat, respectively.The developed analytical method was used to study the degradation rates of pymetrozine and spirotetramat in green bean grown in open field. Results showed that pymetrozine and spirotetramat followed the first-order kinetics model with half-lives of 3.3 days and 4.2 days, respectively. Furthermore, risk assessment was carried out which showed that, the chronic risk quotient (RQc) values for pymetrozine and spirotetramat were much lower than 100%. The present results indicated that the health risks posed for consumers by the pymetrozine and spirotetramat residues were negligible at the recommended dosages.
(© 2023. The Author(s).)
Databáze: MEDLINE
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