title: Determination of phenylurea and triazine herbicides in milk by microwave assisted ionic liquid microextraction high-performance liquid chromatography.
abstract: The determination of phenylurea and triazine herbicides in milk based on microwave assisted ionic liquid microextraction (MAILME) coupled with high-performance liquid chromatographic separation was described. The experimental parameters of the MAILE, including type and amount of ionic liquid, microwave extraction power, extraction time and salt concentration in sample, were evaluated by a univariate method and orthogonal screening. When 60 microL of [C(6)MIM][PF(6)] was used as extraction solvent the target compounds can be isolated from the 4 mL of milk. The MAILME is quick (7 min) and simple. The detection limits for isoproturon, monolinuron, linuron, propazine, prometryne, terbutryn and trietazine are 0.46, 0.78, 1.00, 1.21, 1.96, 0.84 and 1.28 microg L(-1), respectively. The proposed method was applied to the analysis of milk samples and the recoveries of the analytes ranged from 88.4 to 117.9% and relative standard deviations were lower than 7.43%.
authors.affiliation: College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.
authors.forename: Shiqian
authors.initials: S
authors.lastname: Gao
authors.forename: Jingyan
authors.initials: J
authors.lastname: You
authors.forename: Xia
authors.initials: X
authors.lastname: Zheng
authors.forename: Ying
authors.initials: Y
authors.lastname: Wang
authors.forename: Ruibing
authors.initials: R
authors.lastname: Ren
authors.forename: Rui
authors.initials: R
authors.lastname: Zhang
authors.forename: Yuping
authors.initials: Y
authors.lastname: Bai
authors.forename: Hanqi
authors.initials: H
authors.lastname: Zhang
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006540:Herbicides / Q000032:analysis*; D008872:Microwaves; D008892:Milk / Q000737:chemistry*; D010671:Phenylurea Compounds / Q000032:analysis*; D014227:Triazines / Q000032:analysis*
chemical_list: D006540:Herbicides; D010671:Phenylurea Compounds; D014227:Triazines