Fluorimetric determination of thiabendazole residues in mushrooms using sequential injection analysis

Thiabendazole is a benzimidazole fungicide of general use that is specifically used to control mushroom diseases, mainly cobweb diseases, which is caused by members of the genus Cladobotryum. Although this compound is legislated and its maximum residue limit established at 60mgkg−1 by Codex Alimenta...

Full description

Saved in:
Bibliographic Details
Published in:Talanta (Oxford) 2012-07, Vol.96, p.190-194
Main Authors: Llorent-Martínez, E.J., Fernández-de Córdova, M.L., Ruiz-Medina, A., Ortega-Barrales, P.
Format: Article
Language:English
Subjects:
Agaricales - chemistry
Analytical chemistry
Automation
Chemistry
Exact sciences and technology
Flow Injection Analysis - methods
Fluorometry - methods
General, instrumentation
Mushroom
Optosensor
Pesticide
Pesticide Residues - analysis
Pesticide Residues - chemistry
Reproducibility of Results
SIA
Spectrometric and optical methods
Thiabendazole
Thiabendazole - analysis
Thiabendazole - chemistry
Time Factors
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Thiabendazole is a benzimidazole fungicide of general use that is specifically used to control mushroom diseases, mainly cobweb diseases, which is caused by members of the genus Cladobotryum. Although this compound is legislated and its maximum residue limit established at 60mgkg−1 by Codex Alimentarius, there is almost a complete absence of analytical methods available for its determination in mushrooms. Here, we propose an automated method, using Sequential Injection Analysis with fluorescence detection (λexc/λem=305/345nm) for the determination of thiabendazole in mushrooms. We have developed a flow-through optosensor using C18 silica gel as solid support placed in the flow-cell where the determination is performed. This method presents a detection limit of 0.5mgkg−1, and recovery experiments have been carried out in different kinds of mushrooms at levels below the legislated maximum residue limit, demonstrating that the proposed analytical method fulfils the requirements for its applications in quality control of mushrooms.
ISSN:0039-9140
1873-3573
DOI:10.1016/j.talanta.2011.12.072