Rapid and Sensitive Analytical Method for Simultaneous Determination of Imidacloprid and Thiamethoxam Residues in Soils of Sugarcane Ecosystem by Reversed-Phase HPLC |
| |
Authors: | Thirumalaiandi Ramasubramanian Mariappan Paramasivam Ramabhadran Jayanthi |
| |
Affiliation: | 1. Division of Crop Protection, Sugarcane Breeding Institute (Indian Council of Agricultural Research), Coimbatore, 641007, Tamil Nadu, India 2. Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
|
| |
Abstract: | A rapid, simple, sensitive and cost-effective analytical method has been standardised to determine the residues of imidacloprid and thiamethoxam in soil. This method does not require any cleanup with costly sorbents. The recoveries of imidacloprid and thiamethoxam obtained in this no-cleanup method were on par with the protocol involving primary?Csecondary amine-based cleanup. This method requires less volume of solvent (20?mL of acetonitrile/sample) and is suitable for high throughput analyses involving large number of samples. The limit of quantification of the method was 0.01???g/g. Dissipation kinetics of imidacloprid and thiamethoxam in the soils of sugarcane ecosystem was studied by adopting this rapid method. The half-life of imidacloprid and thiamethoxam was 9.07 and 6.22?days when applied at 70 and 100?g a.i./ha, respectively. The dissipation of both the neonicotinoids followed first-order kinetics with good fit. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|