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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Analysis of degradation products of esfenvalerate by SBSE/HPLC-UV/DAD using fractional factorial design

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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.

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