Laboratory Simulation Study of Photo-Degradation Process of Fenvalerate in Aqueous Solution

Abstract:

A laboratory-made the efficient photochemical degradation experimental device, combined with high performance liquid chromatography-tandem diode array detector device (DAD), fluorescence detector (FLD), mass spectrometer detector (MS), research fenvalerate its photo degradation. The structure of the spectral characteristics is the product, photo degradation reaction kinetics of degradation products, suggesting fenvalerate light chemical degradation process in an aqueous solution. The spectral characteristics of fenvalerate under ultraviolet light can be degraded into smaller organic molecules; maternal and main product have strong UV - visible absorption, fenvalerate are weakly fluorescent substance in the aqueous solution. The major products are strong fluorescent substance. Almost no effect The photo degradation kinetic data show fenvalerate photo degradation in an aqueous solution to approximate a reaction of the reaction; pesticide initial concentration, the pH value of the aqueous solution of pesticides photo degradation reaction rate; To accelerate the increase of salinity, light intensity fenvalerate in aqueous photo degradation reaction rate; significant influence of small organic molecules, with the type of small organic molecules.

• Periodical: Applied Mechanics and Materials (Volume 312)
• Pages: 886-892
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.312.886
• Online since: February 2013
• Authors: Yan Ru Liang, Yu Yun Wen, Xiao Yan Hong, Zhen Bin Gong, Wen Quan Li
• Keywords: Degradation Kinetics, Fenvalerate, Mass Spectrometry, Photo Degradation, Spectral Characteristics

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