title: Uniconazole residue and decline in wheat and soil under field application.
abstract: Uniconazole residue dynamics and final residues in supervised field trials at GAP conditions were studied. The residue levels and dissipation rate of uniconazole was detected by LC-MS. At fortification levels of 0.04, 0.2 and 2 mg kg(-1), recoveries ranged from 78.7 % to 100.9 % with RSDs of 0.1 %-4.6 % (n = 5). The dissipation experiments showed the half-lives (T1/2) of uniconazole in soil and wheat plants were 2.9-3.3 and 3.8-4.4 days, respectively. At pre-harvest intervals (PHI) of 45 and 60 days, uniconazole residue were no detectable or below the limit of quantification (LOQ) in soil, wheat plants and wheat.
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, People's Republic of China.
authors.forename: Fengzu
authors.initials: F
authors.lastname: Zhang
authors.forename: Sufang
authors.initials: S
authors.lastname: Fan
authors.forename: Kejia
authors.initials: K
authors.lastname: Gu
authors.forename: Kailin
authors.initials: K
authors.lastname: Deng
authors.forename: Canping
authors.initials: C
authors.lastname: Pan
mesh_terms: D004785:Environmental Pollutants / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D005506:Food Contamination; D006207:Half-Life; D010573:Pesticide Residues / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D010575:Pesticides / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D010937:Plant Growth Regulators / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D012987:Soil / Q000737:chemistry*; D014230:Triazoles / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D014908:Triticum / Q000378:metabolism*
chemical_list: D004785:Environmental Pollutants; D010573:Pesticide Residues; D010575:Pesticides; D010937:Plant Growth Regulators; D012987:Soil; D014230:Triazoles; C092705:uniconazole