- Tytuł:
- Dissipation of methomyl residues in tomato fruits, soil and water using LC-MS/MS
- Autorzy:
-
El-Hefny, D.
Abdallah, I.
Helmy, R.
Mahmoud, H. - Powiązania:
- https://bibliotekanauki.pl/articles/2084623.pdf
- Data publikacji:
- 2019
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
dissipation
LC-MS/MS
methomyl
tomato
QuEChERS - Opis:
- Tomato is an economically important vegetable crop which is attacked heavily by insect pests leading to reduction of yield and quality of the fruits. Field experiments were carried out to investigate the dissipation of methomyl (a common insecticide) used mainly on tomato fruits. LC-MS/MS coupled with the QuEChERS method were used for the determination of methomyl. The results showed that the recovery using matrix-matched standards ranged from 87.8 to 101.3%, with relative standard deviation of 2.5 to 7.5%. Kinetics equation, Log R = log R0 – 0.434 Kt, was used to calculate the rate of degradation in tomato, soil and water. Residue half-life calculated using kinetic rate ranged from 1.95 to 1.63 days in tomato and soil, respectively. From the results it was concluded that tomato fruits can be safely harvested for consumption after 15 days of application based on estimated preharvest interval (PHI). It is advisable to re-estimate the PHI regularly owing to data from the EU and Codex.
- Źródło:
-
Journal of Plant Protection Research; 2019, 59, 3; 355-361
1427-4345 - Pojawia się w:
- Journal of Plant Protection Research
- Dostawca treści:
- Biblioteka Nauki
Artykuł