title: Naked-eye determination of oxalate anion in aqueous solution with copper ion and pyrocatechol violet.
abstract: A novel strategy for the determination of oxalate anions was successfully established using a copper ion and pyrocatechol violet (PV) ensemble. The sensor ensemble can discriminate oxalate over other common anions including F(-), Cl(-), I(-), Br(-), HPO(4)(2-), PO(4)(3-), AcO(-), CO(3)(2-), SO(4)(2-), ClO(4)(-), P(2)O(7)(4-), S(2-) (deposited by Ag(+)), CN(-) (shielded by Fe(3+)) and can detect oxalate at low microgram levels in quasi-physiological aqueous solutions. The detection of the oxalate anion gives rise to a rapid observable visual color change from blue to yellow.
authors.affiliation: Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan, 030006, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Su
authors.forename: Yuan-Qiang
authors.initials: YQ
authors.lastname: Sun
authors.forename: Fang-Jun
authors.initials: FJ
authors.lastname: Huo
authors.forename: Yu-Tao
authors.initials: YT
authors.lastname: Yang
authors.forename: Cai-Xia
authors.initials: CX
authors.lastname: Yin
mesh_terms: D001557:Benzenesulfonates / Q000737:chemistry*; D003116:Color; D003300:Copper / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D015394:Molecular Structure; D019370:Observation; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010070:Oxalates / Q000032:analysis*; D012996:Solutions; D018724:Spinacia oleracea / Q000737:chemistry; D014785:Vision, Ocular; D014867:Water / Q000737:chemistry*
chemical_list: D001557:Benzenesulfonates; D007477:Ions; D009942:Organometallic Compounds; D010070:Oxalates; D012996:Solutions; D014867:Water; C009134:pyrocatechol violet; D003300:Copper