Sensitive determination of pesticides residues in wine samples with the aid of single drop microextraction and response surface methodology

 
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2010 (EN)
Sensitive determination of pesticides residues in wine samples with the aid of single drop microextraction and response surface methodology (EN)

Garbi, E. (EN)

Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας (EL)
Garbi, E. (EN)

The multi-residue trace-level determination of six pesticides (diazinon, dimethoate, chlorpyrifos, vinclozolin, fenthion and quinalphos) in wine samples, after their single-drop microextraction (SDME) is presented herein. The extraction procedure was optimized using the multivariate optimization approach following a two-stage process. The first screening experimental design brought out the significant parameters and was followed by a central composite design (CCD) experiment, which revealed the simultaneous effect of the significant factors affecting the SDME process. High level of linearity for all target analytes was recorded with r2 ranging between 0.9978 and 0.9999 while repeatability (intra-day) and reproducibility (inter-day) varied from 5.6% to 7.4% and 4.9% to 12.5%, respectively. Limits of detection (LODs) and limits of quantification (LOQs) were found to range in the low μgL�1 level. In general, the developed methodology presented simplicity and enhanced sensitivity, rendering it appropriate for routine wine screening purposes. (EN)

Single-drop microextraction (EN)

Πανεπιστήμιο Ιωαννίνων (EL)
University of Ioannina (EN)

Talanta (EN)

English

2010


Elsevier (EN)



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