INVESTIGADORES
CHULZE Sofia Noemi
artículos
Título:
Electrochemical studies of ochratoxin A mycotoxin at gold electrodes modified with cysteamine elf assembled monolayers.Its ultrasensitive quantification in red wine samples
Autor/es:
PERROTA, P,R; VETTORAZZI, N,R; AREVALO, F.J; GRANERO, A.M; CHULZE, S.N; ZON, M,A; FERNADNEZ, H
Revista:
ELECTROANALYSIS
Editorial:
WILEY-V C H VERLAG GMBH
Referencias:
Lugar: Weinheim; Año: 2011 vol. 23 p. 1585 - 1592
ISSN:
1040-0397
Resumen:
The quantification of ochratoxin A is studied at cysteamine self-assembled monolayer modified gold electrodes in red wine samples by square wave voltammetry. Detection and quantification limits of 0.004 mg L1 and 0.012 mg L1,respectively, were determined. The recovery percentages were in the range from 146% to 94.0% at spiking levels ranging from 0.02 to 5 mg L1. The variation coefficients for within-laboratory repeatability varied from 31.4 to 11.5% for spiked level from 0.02 to 2.0 mg L1. The developed electrochemical method is efficient, reproducible, and ultrasensitive for the quantification of OTA in red wine samples.