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|title: ||Optimization of phenolic compounds analysis by capillary electrophoresis|
|authors: ||Lima, Diana L D|
Duarte, Armando C
Esteves, Valdemar I
|keywords: ||Capillary zone electrophoresis|
|issue date: ||2007|
|abstract: ||Operational parameters like migration time, temperature, voltage, composition of background electrolyte and content of organic modifier were
optimized in CZE for the determination of lignin-like phenolic compounds.
The applied background electrolyte buffer consisted of a Na2B4O7, KH2PO4 aqueous solution, pH 9.15 using acetonitrile as organic modifier
with UV-detection. Compounds, such as acetosyringone, acetovanillone, syringealdehyde, p-hydroxyacetophenone, vanillin, syringic acid, ferulic
acid, p-hydroxybenzaldehyde, p-coumaric acid, vanillic acid and p-hydroxybenzoic acid were applied as reference compounds.
The quality and quantity of different phenolic compounds obtained upon alkaline CuO oxidation of a commercial humic acid were determined
with CZE using ethylvanillin as internal standard.
The optimized CZE revealed has being an appropriate method since it is quick, sensitive and quantitative and does not require a time-consuming
|publisher version/DOI: ||http://dx.doi.org/10.1016/j.talanta.2007.01.049|
|appears in collections||DQ - Artigos|
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