Electronic Resource
Springer
Fresenius' Zeitschrift für analytische Chemie
334 (1989), S. 59-63
ISSN:
1618-2650
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary A method for determination of phenolic compounds in distilled alcoholic beverages has been developed. After separation by reversed phase chromatography these compounds are detected coulometrically in a dual electrode detector. The hydrodynamic electrochemical behaviour of the substances in oxidative and reductive mode was investigated. For quantitative determination phenolic compounds are oxidized at the first working electrode (+0.65 V); then the oxidation products are reduced at the second working electrode (0.0 V). The current due to these processes is recorded. By the high selectivity of the detection mode matrix interferences can be eliminated in several alcoholic beverages. In this way qualitative information is improved. The detection limits of phenolic acids and aldehydes are between 0.01 and 1 ng (S/N=3).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00481975
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