Determination of pesticide residues in red wines with microporous membrane liquid-liquid extraction and gas chromatography.
A sample pretreatment method based on microporous membrane liquid-liquid extraction (MMLLE) was developed for the subsequent gas chromatographic determination of pesticides in wine. MMLLE provided efficient and selective extraction with enrichment factors in the range 3-13. The gas chromatographic separation was carried out using on-column injection and flame ionization detection. The method was linear, repeatable and sensitive. The limits of quantification were better than 0.006 mg/L for all the analytes except for iprodione (0.37 mg/L). The method was applied to the determination of pesticides in several red wines of different origin.
Hyötyläinen
T
T
Laboratory of Analytical Chemistry, Department of Chemistry, P.O. Box 55, 00014 University of Helsinki, Finland. tuulia.hyotylainen@helsinki.fi
Tuutijärvi
T
T
Kuosmanen
K
K
Riekkola
M-L
ML
D002849:Chromatography, Gas / Q000379:methods*; D008567:Membranes, Artificial; D010573:Pesticide Residues / Q000032:analysis*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014920:Wine / Q000032:analysis*
D008567:Membranes, Artificial; D010573:Pesticide Residues