| Full text | |
| Author(s): |
Renata Colombo
;
Janete H. Yariwake
;
Marcos R. V. Lanza
Total Authors: 3
|
| Document type: | Journal article |
| Source: | Química Nova; v. 37, n. 3, p. 535-539, Jun. 2014. |
| Abstract | |
A simple procedure based on stir bar sorptive extraction and high-performance liquid chromatography-ultraviolet/photodiode array detection (SBSE/LC-UV/PAD) to determine intermediates and by-products of esfenvalerate is described. The influence of organic modifier, ionic strength, extraction time, temperature and pH were simultaneously evaluated by using a factorial experimental design. The utilization of different organic solvents and desorption times were also investigated to establish the optimal conditions for SBSE liquid desorption. Among the ten different peaks (intermediates and by-products) detected after degradation of esfenvalerate, eight (including 3-phenoxybenzoic acid and 3-phenoxybenzaldehyde) were successfully extracted by SBSE under the optimized conditions. (AU) | |
| FAPESP's process: | 07/08314-3 - Organophosphrous pesticides degradation (chlorpyrifos, methyl-parathion and profenofos) via electrochemical and advanced oxidation processes |
| Grantee: | Marcos Roberto de Vasconcelos Lanza |
| Support type: | Regular Research Grants |
| FAPESP's process: | 10/05711-4 - Applications of SBSE (SBSE/LC, SBSE/GC) for the chemical-analytical study of Passiflora alata and P. edulis (maracujá) fruit, with emphasis to potentially toxic natural products |
| Grantee: | Janete Harumi Yariwake |
| Support type: | Regular Research Grants |
| FAPESP's process: | 07/04759-0 - Gas diffusion electrodes modified by organometallic compounds for hydrogen peroxide production |
| Grantee: | Marcos Roberto de Vasconcelos Lanza |
| Support type: | Regular Research Grants |