High throughput analysis of 150 pesticides in fruits and vegetables using QuEChERS and low-pressure gas chromatography-time-of-flight mass spectrometry

Journal of Chromatography. a
Urairat KoesukwiwatNatchanun Leepipatpiboon

Abstract

A higher monitoring rate is highly desirable in the labs, but this goal is typically limited by sample throughput. In this study, we sought to assess the real-world applicability of fast, low-pressure GC-time-of-flight MS (LP-GC/TOFMS) for the identification and quantification of 150 pesticides in tomato, strawberry, potato, orange, and lettuce samples. Buffered and unbuffered versions of QuEChERS (which stands for "quick, easy, cheap, effective, rugged, and safe") using dispersive solid-phase extraction (d-SPE) and disposable pipette extraction (DPX) for clean-up were compared for sample preparation. For clean-up of all sample types, a combination of 150 mg MgSO₄, 50mg primary secondary amine (PSA), 50 mg C₁₈, and 7.5 mg graphitized carbon black (GCB) per mL extract was used. No significant differences were observed in the results between the different sample preparation versions. QuEChERS took < 10 min per individual sample, or < 1 h for two chemists to prepare 32 pre-homogenized samples, and using LP-GC/TOFMS, < 10 min run time and < 15 min cycle time allowed > 32 injections in 8 h. Overall, > 126 analytes gave recoveries (3 spiking levels) in the range of 70-120% with < 20% RSD. The results indicate that LP-GC/TOFMS for GC-...Continue Reading

References

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Jul 25, 2003·Journal of Chromatography. a·Katerina Mastovská, Steven J Lehotay
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Feb 11, 2010·Journal of Chromatography. a·Steven J LehotayNatchanun Leepipatpiboon

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Citations

Jan 22, 2013·Journal of Agricultural and Food Chemistry·Pakritsadang KaewsuyaStephen L Morgan
Oct 22, 2011·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·N Fleury FilhoJ M Oliveira
May 11, 2012·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·V C FernandesC Delerue-Matos
Jun 2, 2011·Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan·Ming ZhangBingren Xiang
Mar 28, 2012·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Siribhorn MadlaHiroyuki Wariishi
Dec 17, 2011·International Journal of Molecular Sciences·Jolanta StockaJacek Namieśnik
Mar 26, 2014·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Żaneta BargańskaJacek Namieśnik
Mar 13, 2014·Archives of Environmental Contamination and Toxicology·Ratana Sapbamrer, Surat Hongsibsong
Sep 13, 2012·Analytical and Bioanalytical Chemistry·Isabela Mendes BaldimIsarita Martins
Apr 16, 2014·Food Chemistry·Andrés Ramírez RestrepoGustavo Antonio Peñuela Mesa
Apr 7, 2012·Bulletin of Environmental Contamination and Toxicology·Magdalena KvíčalováAlena Svobodová
Jan 19, 2016·Food Chemistry·Jhonyson Arruda Carvalho GuedesRonaldo Ferreira do Nascimento
Oct 4, 2011·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·Rui SuAimin Yu
Mar 13, 2014·Journal of Agricultural and Food Chemistry·Josep V MercaderAntonio Abad-Fuentes
Dec 25, 2015·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Hans Ragnar NorliKari Stuveseth
Dec 15, 2010·Biomedical Chromatography : BMC·Prashant Laxman KoleRavi Sheshala
Mar 20, 2016·Environmental Monitoring and Assessment·Sana JawaidH I Afridi
Jul 1, 2015·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Jing NieShen Ji
Jul 18, 2015·Journal of Chromatography. a·Emmanuelle BichonBruno Le Bizec

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