{"refrec":{"BRefID":218510,"RR":"<b>Leandro, C.C.; Hancock, P.; Fussell, R.J.; Keely, B.J.</b> (2007). Ultra-performance liquid chromatography for the determination of pesticide residues in foods by tandem quadrupole mass spectrometry with polarity switching. <i>J. Chromatogr. 1144(2)</i>: 161-169. <a href=\"https://dx.doi.org/10.1016/j.chroma.2007.01.030\" target=\"_blank\">https://dx.doi.org/10.1016/j.chroma.2007.01.030</a>","BEntID":210253,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>J. Chromatogr. 1144(2)</i>: 161-169. <a href=\"https://dx.doi.org/10.1016/j.chroma.2007.01.030\" target=\"_blank\">https://dx.doi.org/10.1016/j.chroma.2007.01.030</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Leandro, C.C.; Hancock, P.; Fussell, R.J.; Keely, B.J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Leandro, C.C. <i>et al.</i>","Englishabstract":"An ultra-performance liquid chromatographic (UPLC) electrospray ionisation tandem quadrupole mass spectrometric method has been developed for the determination of 52 pesticides in cereal-based baby foods, oranges and potatoes. The fast polarity switching capability of the mass spectrometer used enabled the determination of 44 of the compounds in the positive ionisation mode and 8 of the compounds in the negative ionisation mode in a single run. Prior to analysis, co-extractives were removed from acetonitrile extracts using dispersive solid-phase extraction with primary secondary amine (50 mg). The UPLC method separates all of the pesticides, resolves structural isomers (e.g. butocarboxim sulfoxide and aldicarb sulfoxide) and has a short (7 min) cycle time. Extracts spiked with pesticides at 0.10 and 0.01 mg kg-1 yielded average recoveries in the range of 66–124% with relative standard deviations less than 19% for the majority of the analytes.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Ultra-performance liquid chromatography for the determination of pesticide residues in foods by tandem quadrupole mass spectrometry with polarity switching","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-05-31 01:31:18.114989","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"    Ultra-performance liquid chromatography;     Tandem mass spectrometry;     Polarity switching;     Pesticide residues","OtherDescriptors":null,"Notes":null,"AnaPub":2007,"MonPub":null,"DateUpdate":"2020-06-25","DateCreate":"2012-09-24","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000245004100001","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.chroma.2007.01.030"},"refs":null,"anarec":{"AnaID":218510,"PubliDate":2007,"Pagination":"161-169","XtraPublOfAnaID":null,"ISBN":null,"Volume":"1144","Issue":"2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43215,"SerRR":"Journal of Chromatography A. 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