title: Determination of sulfonamides in bovine milk with column-switching high performance liquid chromatography using surface imprinted silica with hydrophilic external layer as restricted access and selective extraction material.
authors.affiliation: College of Chemistry, Nankai University, Tianjin 300071, China.
authors.forename: Wenjuan
authors.initials: W
authors.lastname: Xu
authors.forename: Shufang
authors.initials: S
authors.lastname: Su
authors.forename: Ping
authors.initials: P
authors.lastname: Jiang
authors.forename: Huaisong
authors.initials: H
authors.lastname: Wang
authors.forename: Xiangchao
authors.initials: X
authors.lastname: Dong
authors.forename: Min
authors.initials: M
authors.lastname: Zhang