PMID- 26590145 OWN - NLM STAT- MEDLINE DCOM- 20160623 LR - 20181202 IS - 1573-2959 (Electronic) IS - 0167-6369 (Linking) VI - 187 IP - 12 DP - 2015 Dec TI - Dissipation kinetics of emamectin benzoate and lufenuron residues in cabbage grown under field conditions. PG - 765 LID - 10.1007/s10661-015-4989-1 [doi] AB - Residue analysis of emamectin benzoate and lufenuron in cabbage matrices and soil was developed using a quick, easy, cheap, effective, rugged, and safe (QuEChERS) method and ultra high-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS). The samples were extracted with 1% acetic acid in acetonitrile (v/v) or 1% acetic acid in acetonitrile/water (5:1, v/v) and cleaned up by dispersive solid-phase extraction. Mean recoveries and relative standard deviations (RSDs) in all samples ranged 87.8-100.0 % and 3.6-12.6% for emamectin benzoate and 87.8-104.8 % and 6.2-11.5% for lufenuron, respectively. The validated method was used to evaluate the dissipation rate of emamectin benzoate and lufenuron in cabbage and soil as well as the residual levels in harvested cabbage and soil at different preharvest intervals (PHI). The half-lives of emamectin benzoate and lufenuron were 1.08-2.70 and 1.74-5.04 days in cabbage, and 1.42-4.01 and 0.94-6.18 days in soil, respectively. The terminal residues were below the China maximum residue limits (MRLs) at 3 days for emamectin benzoate (0.1 mg kg(-1)) and European Union MRLs at 5 days for lufenuron (0.5 mg kg(-1)), which suggested that 5 days could be recommended as the PHI for the commercial formulation of emamectin benzoate and lufenuron application in the Chinese cabbage field. FAU - Dong, Bizhang AU - Dong B AD - Lab of Pesticide Residues and Environmental Toxicology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, People's Republic of China. FAU - Zhao, Qing AU - Zhao Q AD - Lab of Pesticide Residues and Environmental Toxicology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, People's Republic of China. FAU - Hu, Jiye AU - Hu J AD - Lab of Pesticide Residues and Environmental Toxicology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, People's Republic of China. jyhu@ustb.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20151120 PL - Netherlands TA - Environ Monit Assess JT - Environmental monitoring and assessment JID - 8508350 RN - 0 (Acetonitriles) RN - 0 (Benzamides) RN - 0 (Pesticide Residues) RN - 0 (Plant Extracts) RN - 0 (Soil) RN - 0 (Soil Pollutants) RN - 1R754M4918 (fluphenacur) RN - 70288-86-7 (Ivermectin) RN - HVM3G4A01W (emamectin benzoate) RN - Q40Q9N063P (Acetic Acid) RN - Z072SB282N (acetonitrile) SB - IM MH - Acetic Acid/chemistry MH - Acetonitriles/chemistry MH - Benzamides/*analysis MH - Brassica/*chemistry MH - Calibration MH - China MH - Chromatography, Liquid MH - Environmental Monitoring/*methods MH - Half-Life MH - Ivermectin/*analogs & derivatives/analysis MH - Kinetics MH - Pesticide Residues/*analysis MH - Plant Extracts/*chemistry MH - Soil/chemistry MH - Soil Pollutants/analysis MH - Solid Phase Extraction MH - Tandem Mass Spectrometry OTO - NOTNLM OT - Cabbage OT - Dissipation OT - Emamectin benzoate OT - Lufenuron OT - Residues EDAT- 2015/11/22 06:00 MHDA- 2016/06/24 06:00 CRDT- 2015/11/22 06:00 PHST- 2015/05/25 00:00 [received] PHST- 2015/11/12 00:00 [accepted] PHST- 2015/11/22 06:00 [entrez] PHST- 2015/11/22 06:00 [pubmed] PHST- 2016/06/24 06:00 [medline] AID - 10.1007/s10661-015-4989-1 [pii] AID - 10.1007/s10661-015-4989-1 [doi] PST - ppublish SO - Environ Monit Assess. 2015 Dec;187(12):765. doi: 10.1007/s10661-015-4989-1. Epub 2015 Nov 20.