Measurement of phenols dearomatization via electrolysis: The UV-Vis solid phase extraction method

Dearomatization levels during electrochemical oxidation of p-methoxyphenol (PMP) and p-nitrophenol (PNP) have been determined through UV-Vis spectroscopy using solid phase extraction (UV-Vis/SPE). The results show that the method is satisfactory to determine the ratio between aromatic compounds and...

Full description

Saved in:
Bibliographic Details
Published in:Water research (Oxford) 2010-02, Vol.44 (3), p.911-917
Main Authors: Vargas, Ronald, Borrás, Carlos, Mostany, Jorge, Scharifker, Benjamin R.
Format: Article
Language:English
Subjects:
aliphatic acids
analytical methods
Anisoles - analysis
Antimony - chemistry
Applied sciences
aromatic compounds
chemical degradation
chemical reactions
chemical structure
Dearomatization level
Electrochemical oxidation of phenols
Electrodes
Electrolysis
Electrolysis - methods
electron transfer
Exact sciences and technology
Extraction
Hydrocarbons, Aromatic - analysis
Mathematical models
Metal oxide anode
Nitrophenols - analysis
Other industrial wastes. Sewage sludge
oxidation
Oxidation-Reduction
oxides
p-methoxyphenol
p-nitrophenol
Phenols
Pollution
reaction kinetics
Ring opening
Solid phase extraction
Solid Phase Extraction - methods
Solid phases
Solutions
Spectra
Spectrophotometry, Ultraviolet
tin
Tin Compounds - chemistry
ultraviolet-visible spectroscopy
UV-Vis spectroscopy
Waste water
Wastes
wastewater treatment
Water treatment and pollution
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Dearomatization levels during electrochemical oxidation of p-methoxyphenol (PMP) and p-nitrophenol (PNP) have been determined through UV-Vis spectroscopy using solid phase extraction (UV-Vis/SPE). The results show that the method is satisfactory to determine the ratio between aromatic compounds and aliphatic acids and reaction kinetics parameters during treatment of wastewater, in agreement with results obtained from numerical deconvolution of UV-Vis spectra. Analysis of solutions obtained from electrolysis of substituted phenols on antimony-doped tin oxide (SnO 2 Sb) showed that an electron acceptor substituting group favored the aromatic ring opening reaction, preventing formation of intermediate quinone during oxidation.
ISSN:0043-1354
1879-2448
DOI:10.1016/j.watres.2009.09.063