Estimation of diafenthiuron residues in cabbage by hplc and confirmation by lc-ms-ms
| Autor: | Balpreet Kaur Kang, Sanjay Kumar Sahoo, Athulya R |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Detection limit
Chromatography Chemistry Acaricide Pollution Agricultural and Biological Sciences (miscellaneous) Biochemistry High-performance liquid chromatography Persistence (computer science) Broad spectrum chemistry.chemical_compound Thiourea Lc ms ms Agronomy and Crop Science Food Science Biotechnology |
| Zdroj: | Pesticide Research Journal. 32:304-310 |
| ISSN: | 2249-524X 0970-6763 |
| DOI: | 10.5958/2249-524x.2020.00024.2 |
| Popis: | Diafenthiuron, 1-tert-butyl-3-(2,6-diisopropyl-4-phenoxyphenyl) thiourea, a broad spectrum insecticide cum acaricide belonging to thiourea group, has been found effective in managing sucking pests and mites. The persistence pattern of its Polo 50% WP on cabbage following three applications at 300 and 600 g a.i. ha⁻¹ at an interval of 10 d, is reported. Residues were estimated by HPLC and confirmed by LC-MS-MS. The average initial deposits were 0.60 and 1.27 mg kg⁻¹ on the cabbage heads following its third application at single and double the recommended dosages, respectively. Half-life periods were found to be 1.88 and 2.15 d at the two application rates, respectively. The residues reduced to below its limit of quantification of 0.05 mg kg⁻¹ after 7 and 10 d, at the single and the double dosages respectively. |
| Databáze: | OpenAIRE |
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