title: Residues and dissipation of trifloxystrobin and its metabolite in tomatoes and soil.
abstract: A simple residue analytical method using the quick, easy, cheap, effective, rugged, and safe (QuEChERS) procedure for the determination of trifloxystrobin and its metabolite trifloxystrobin acid (CGA321113) in tomato and soil was developed using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). The limits of detection were 0.0005 mg/kg for trifloxystrobin and 0.001 mg/kg for trifloxystrobin acid, respectively. The average recoveries in tomato and soil ranged from 73-99 % for trifloxystrobin and 75-109 % for trifloxystrobin acid, with relative standard deviations below 15 %. The method was then used to study the dissipation and residues in tomato and soil. The dissipation half-lives of trifloxystrobin in tomato were 2.9 days (Beijing) and 5.4 days (Shandong), while in soil were 1.9 days (Beijing) and 3.0 days (Shandong), respectively. The final results showed that the major residue compound was trifloxystrobin in tomato whereas it was its metabolite, trifloxystrobin acid, in soil. The final residues of total trifloxystrobin (including trifloxystrobin acid) were below the EU maximum residue limit of 0.5 mg kg(-1) in tomato 3 days after the treatment.
authors.affiliation: College of Science, China Agricultural University, Beijing, 100193, People's Republic of China.
authors.forename: Lin
authors.initials: L
authors.lastname: Wang
authors.forename: Wenming
authors.initials: W
authors.lastname: Li
authors.forename: Puyu
authors.initials: P
authors.lastname: Li
authors.forename: Minghui
authors.initials: M
authors.lastname: Li
authors.forename: Shuo
authors.initials: S
authors.lastname: Chen
authors.forename: Lijun
authors.initials: L
authors.lastname: Han
mesh_terms: D000085:Acetates / Q000032:analysis*; D000890:Anti-Infective Agents / Q000032:analysis*; D002853:Chromatography, Liquid; D004784:Environmental Monitoring; D006207:Half-Life; D007097:Imines / Q000032:analysis*; D018551:Solanum lycopersicum / Q000737:chemistry*; D008689:Methacrylates / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis*; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis; D000073739:Strobilurins; D053719:Tandem Mass Spectrometry
chemical_list: D000085:Acetates; D000890:Anti-Infective Agents; D007097:Imines; D008689:Methacrylates; D010573:Pesticide Residues; D012987:Soil; D012989:Soil Pollutants; D000073739:Strobilurins; C467051:trifloxystrobin
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