Determination of indole in shrimps by differential-pulse voltammetry in an emulsified medium
- 1 January 1990
- journal article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 115 (6) , 869-871
- https://doi.org/10.1039/an9901500869
Abstract
A method has been developed to determine indole in shrimps by differential-pulse voltammetry at a Pt electrode in an emulsified medium, after extraction into hexane-ethyl acetate (49 + 1). The standard additions method was used in order to minimise the matrix effect. Recoveries at the concentration levels of 11.71 and 0.94 µg g–1 of shrimp were 82 and 75%, respectively. The relative standard deviations were 3.5 and 4.0%, respectively. The accuracy of the proposed method was verified by comparing the results obtained from the analysis of shrimp samples allowed to decompose at room temperature for 1, 3 and 4 d, with those obtained from a spectrophotometric method by applying Student's t-test.Keywords
This publication has 3 references indexed in Scilit:
- Determination of coumarins by voltammetric techniques in micellar and emulsified mediaAnalytica Chimica Acta, 1989
- Voltammetric determination of indole in micellar and emulsified mediaJournal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1987
- Electroanalytical studies of phenothiazine neuroleptics at gold and platinum electrodesThe Analyst, 1984