PMID- 23194542 OWN - NLM STAT- MEDLINE DCOM- 20130517 LR - 20191210 IS - 1873-7072 (Electronic) IS - 0308-8146 (Linking) VI - 136 IP - 3-4 DP - 2013 Feb 15 TI - Simple multiresidue extraction method for the determination of fungicides and plant growth regulator in bean sprouts using low temperature partitioning and tandem mass spectrometry. PG - 1414-20 LID - S0308-8146(12)01472-0 [pii] LID - 10.1016/j.foodchem.2012.09.068 [doi] AB - A simple multiresidue analytical method is developed for the simultaneous determination of carbendazim (CB), thiabendazole (TB), and 6-benzyl aminopurine (6-BA) in bean sprouts. The samples were extracted with acetonitrile followed by partitioning at -80 degrees C for 5-10 min. A YMC C(8) column was used to separate the analytes before being qualitatively and quantitatively determined by liquid chromatography-electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS) in positive ion mode using multiple reaction monitoring (MRM). The matrix-matched calibration curves showed good linearity in the range 0.01-1.0 mg/kg with correlation coefficients in excess of 0.998. The mean recoveries were in the range of 80.4-96.3% at 0.1 and 0.5 spiked levels, and the relative standard deviations (RSDs) were in the range of 0.5-7.6%. The limits of quantifications (LOQ) were in the range of 0.005-0.01 mg/kg. The method was successfully applied to 90 samples (among which 45 were organic) collected from a commercial bean sprout production house throughout the city. Except for 6-BA, the rest of the analytes had values lower than their LOQs. In sum, carbendazim, thiabendazole, and 6-BA were extracted in a single step, and no steps for clean-up or concentration of the extracts were needed. The current method can be used for sensitive and accurate determination and confirmation of residues in bean sprout samples. CI - Copyright (c) 2012 Elsevier Ltd. All rights reserved. FAU - Cho, Soon-Kil AU - Cho SK AD - National Agricultural Products Quality Management Service, Products Safety Inspection Laboratory, Gwangsan-Gu, Gwangju, Republic of Korea. FAU - Abd El-Aty, A M AU - Abd El-Aty AM FAU - Park, Ki Hun AU - Park KH FAU - Park, Jong-Hyouk AU - Park JH FAU - Assayed, M E AU - Assayed ME FAU - Jeong, Yang-Mo AU - Jeong YM FAU - Park, Young-Seok AU - Park YS FAU - Shim, Jae-Han AU - Shim JH LA - eng PT - Evaluation Study PT - Journal Article DEP - 20120928 PL - England TA - Food Chem JT - Food chemistry JID - 7702639 RN - 0 (Fungicides, Industrial) RN - 0 (Pesticide Residues) RN - 0 (Plant Growth Regulators) SB - IM MH - Chemical Fractionation/*methods MH - Chromatography, High Pressure Liquid/methods MH - Chromatography, Liquid MH - Fabaceae/*chemistry MH - Food Contamination/analysis MH - Fungicides, Industrial/*analysis/*isolation & purification MH - Pesticide Residues/*analysis/*isolation & purification MH - Plant Growth Regulators/*analysis/*isolation & purification MH - Spectrometry, Mass, Electrospray Ionization/methods MH - Tandem Mass Spectrometry MH - Vegetables/chemistry EDAT- 2012/12/01 06:00 MHDA- 2013/05/18 06:00 CRDT- 2012/12/01 06:00 PHST- 2012/07/08 00:00 [received] PHST- 2012/09/04 00:00 [revised] PHST- 2012/09/12 00:00 [accepted] PHST- 2012/12/01 06:00 [entrez] PHST- 2012/12/01 06:00 [pubmed] PHST- 2013/05/18 06:00 [medline] AID - S0308-8146(12)01472-0 [pii] AID - 10.1016/j.foodchem.2012.09.068 [doi] PST - ppublish SO - Food Chem. 2013 Feb 15;136(3-4):1414-20. doi: 10.1016/j.foodchem.2012.09.068. Epub 2012 Sep 28.