NDLI: Determination of Abamectin Residues in Avocados by Microwave-Assisted Extraction and HPLC with Fluorescence Detection

Content Provider	Springer Nature Link
Author	Hernández Borges, Javier Ravelo Pérez, Lidia M. Hernández Suárez, Estrella M. Carnero, Aurelio Rodríguez Delgado, Miguel Ángel
Copyright Year	2007
Abstract	In this article a new analytical method for the confirmation and quantification of abamectin residues in avocados is described. The method allows a fast analysis of abamectin homologues using microwave assisted extraction (MAE), solid-phase extraction (SPE) and high-performance liquid chromatography (HPLC) with fluorescence (FL) detection using trifluoroacetic anhydride (TFAA) and N-methylimidazole (NMIM) as derivatizing agents. The mobile phase consisted of water, methanol and acetonitrile (5:47.5:47.5 v/v/v) and was pumped at a rate of 1.1 mL min−1 (isocratic elution). Homogenized avocado samples were extracted once with 20 mL acetonitrile:water 4:1 (v/v) in a microwave oven for 26 min at 700 W with a maximum temperature of 80 °C. MAE operational parameters were optimized by means of an experimental design. Extracts were cleaned using C18 SPE cartridges. Average recoveries of the method at four spiked levels (0.005, 0.01, 0.10 and 1.0 mg kg−1) were found to be in the range 90–100% with good precision (RSD < 12%). The limits of detection (LODs) and quantification (LOQs) of the whole method were 0.001 and 0.003 mg kg−1, respectively, which are lower than the maximum residue limit (MRL) established by the Spanish and the European legislation in avocados (0.01 mg kg−1). Several avocado samples previously treated with the pesticide were also analyzed.
Starting Page	69
Ending Page	75
Page Count	7
File Format	PDF
ISSN	00095893
Journal	Chromatographia
Volume Number	67
Issue Number	1-2
e-ISSN	16121112
Language	English
Publisher	Vieweg Verlag
Publisher Date	2007-11-21
Publisher Place	Wiesbaden
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Column liquid chromatography Fluorescence detection Microwave-assisted extraction Abamectin in avocados Measurement Science, Instrumentation Plant Sciences Biochemistry Pharmacy Organic Chemistry Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Analytical Chemistry Biochemistry Clinical Biochemistry

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