PMID- 19576591 OWN - NLM STAT- MEDLINE DCOM- 20090903 LR - 20090717 IS - 1873-3778 (Electronic) IS - 0021-9673 (Linking) VI - 1216 IP - 32 DP - 2009 Aug 7 TI - Multiresidue determination of 11 new fungicides in grapes and wines by liquid-liquid extraction/clean-up and programmable temperature vaporization injection with analyte protectants/gas chromatography/ion trap mass spectrometry. PG - 6033-42 LID - 10.1016/j.chroma.2009.06.046 [doi] AB - A gas chromatographic ion trap mass spectrometry (GC-ITMS) method was developed for the determination of 11 new generation fungicides (benalaxyl, benalaxyl-M, boscalid, cyazofamid, famoxadone, fenamidone, fluquinconazole, iprovalicarb, pyraclostrobin, trifloxystrobin and zoxamide) in grapes and wines. Samples were extracted with ethyl acetate:hexane (1:1, v/v) and cleaned-up with graphitized carbon black/primary secondary amine (GCB/PSA) solid-phase extraction (SPE) cartridges using acetonitrile:toluene (3:1, v/v) as eluent. The addition of analyte protectants (3-ethoxy-1,2-propanediol, d-sorbitol and l-gulonic acid gamma-lactone) in the final extracts allowed to avoid the matrix-induced response enhancement effect on quantitation process with absolute recoveries ca. 100%. Precision (expressed as relative standard deviation) was lower than 16% for all fungicides. Limits of detection and quantitation were lower than 0.01 mg/kg or mg/L, except for cyazofamid, much smaller in all cases than maximum residue levels (MRLs) established by European Union for grapes and by Switzerland and Italy for wines. The proposed method was applied to determine fungicide residues in three different white grapes for vinification produced in Ribeiro area in Galicia (NW Spain), as well as in their corresponding final wines. FAU - Gonzalez-Rodriguez, Rosa M AU - Gonzalez-Rodriguez RM AD - Nutrition and Bromatology Group, Analytical and Food Chemistry Department, Faculty of Food Science and Technology, University of Vigo, Ourense Campus, E32400 Ourense, Spain. FAU - Cancho-Grande, Beatriz AU - Cancho-Grande B FAU - Simal-Gandara, Jesus AU - Simal-Gandara J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090618 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 0 (Fungicides, Industrial) RN - 0 (Pesticide Residues) SB - IM MH - Chemical Fractionation/methods MH - Fungicides, Industrial/*analysis MH - Gas Chromatography-Mass Spectrometry/*methods MH - Linear Models MH - Pesticide Residues/*analysis MH - Reproducibility of Results MH - Sensitivity and Specificity MH - Temperature MH - Vitis/*chemistry MH - Volatilization MH - Wine/*analysis EDAT- 2009/07/07 09:00 MHDA- 2009/09/04 06:00 CRDT- 2009/07/07 09:00 PHST- 2009/02/10 00:00 [received] PHST- 2009/06/09 00:00 [revised] PHST- 2009/06/12 00:00 [accepted] PHST- 2009/07/07 09:00 [entrez] PHST- 2009/07/07 09:00 [pubmed] PHST- 2009/09/04 06:00 [medline] AID - S0021-9673(09)00914-5 [pii] AID - 10.1016/j.chroma.2009.06.046 [doi] PST - ppublish SO - J Chromatogr A. 2009 Aug 7;1216(32):6033-42. doi: 10.1016/j.chroma.2009.06.046. Epub 2009 Jun 18.