PMID- 23410121 OWN - NLM STAT- MEDLINE DCOM- 20131209 LR - 20191210 IS - 1944-0057 (Electronic) IS - 1944-0057 (Linking) VI - 30 IP - 4 DP - 2013 TI - Simultaneous determination of pyrimethanil, cyprodinil, mepanipyrim and its metabolite in fresh and home-processed fruit and vegetables by a QuEChERS method coupled with UPLC-MS/MS. PG - 713-21 LID - 10.1080/19440049.2013.768777 [doi] AB - A QuEChERS procedure for the simultaneous determination of pyrimethanil, cyprodinil, mepanipyrim and its metabolite (M31) in fresh and processed fruit and vegetables was developed using ultra-performance liquid chromatography/tandem mass spectrometry (UPLC-MS/MS). The determination of the four target compounds was achieved in less than 6.0 min using an electrospray ionisation source in positive mode. The limits of detection (LODs) were below 0.4 mug kg(-)(1), while the limits of quantification (LOQs) did not exceed 1.5 mug kg(-)(1) for all studied matrices. Good linearity of the calibration curves was obtained over the range from 0.002 to 2 mg kg(-)(1), with correlation coefficients higher than 0.999. The average recoveries of this method in apple, peach, cabbage and tomato at the five spiked levels (0.002, 0.01, 0.05, 0.20 and 2.0 mg kg(-)(1)) ranged from 81.5% to 107.3% with relative standard deviations (RSDs) in the range of 1.5-13.9% (n = 5) for all analytes. Residue levels of anilinopyrimidine fungicides in fresh and home-processed apple, peach, cabbage and tomato were also studied. The results indicate that residue levels are significantly reduced following washing, peeling and boiling, and there is no toxic metabolite of mepanipyrim (M31) which is detected during boiling. This study provides a theoretical basis for China to draw up maximum residue limits (MRLs) and protect consumers from the negative health effects of pesticide residues detected in fruit and vegetables. FAU - Liang, Xuyang AU - Liang X AD - State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China. FAU - Liu, Xingang AU - Liu X FAU - Dong, Fengshou AU - Dong F FAU - Xu, Jun AU - Xu J FAU - Qin, Dongmei AU - Qin D FAU - Li, Yuanbo AU - Li Y FAU - Tian, Yingying AU - Tian Y FAU - Zhang, Ying AU - Zhang Y FAU - Han, Yongtao AU - Han Y FAU - Zheng, Yongquan AU - Zheng Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Validation Study DEP - 20130214 PL - England TA - Food Addit Contam Part A Chem Anal Control Expo Risk Assess JT - Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment JID - 101485040 RN - 0 (Pyrimidines) RN - 42P6T6OFWZ (cyprodinil) RN - 6IA5HP6C8Z (pyrimethanil) RN - B150X76OJY (mepanipyrim) SB - IM MH - Calibration MH - Chromatography, Liquid/*methods MH - Fruit/*chemistry MH - Limit of Detection MH - Pyrimidines/*analysis MH - Reproducibility of Results MH - Tandem Mass Spectrometry/*methods MH - Vegetables/*chemistry EDAT- 2013/02/16 06:00 MHDA- 2013/12/16 06:00 CRDT- 2013/02/16 06:00 PHST- 2013/02/16 06:00 [entrez] PHST- 2013/02/16 06:00 [pubmed] PHST- 2013/12/16 06:00 [medline] AID - 10.1080/19440049.2013.768777 [doi] PST - ppublish SO - Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2013;30(4):713-21. doi: 10.1080/19440049.2013.768777. Epub 2013 Feb 14.