title: Europium(III) complex-functionalized magnetic nanoparticle as a chemosensor for ultrasensitive detection and removal of copper(II) from aqueous solution.
abstract: Ultrasensitive, accurate detection and separation of heavy metal ions is very important in environmental monitoring and biological detection. In this paper, a highly sensitive and specific detection method for Cu(2+) based on the fluorescence quenching of a europium(III) hybrid magnetic nanoprobe is presented. This nanoprobe can detect Cu(2+) over a wide pH range (5.0-10.0) with a detection limit as low as 0.1 nM and it can be used for detecting Cu(2+) in living cells. After the magnetic separation, the Cu(2+) concentration decreased to 1.18 ppm, which is less than the US EPA drinking water standard (1.3 ppm), and more than 70% Cu(2+) could be removed when the amount of nanocomposite 1 reached 1 mg.
authors.affiliation: Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry Lanzhou University Gansu, Lanzhou University, Lanzhou 730000, P.R. China. wangbd@lzu.edu.cn.
authors.forename: Jing
authors.initials: J
authors.lastname: Liu
authors.forename: Wei
authors.initials: W
authors.lastname: Zuo
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Jian
authors.initials: J
authors.lastname: Liu
authors.forename: Zhiyi
authors.initials: Z
authors.lastname: Wang
authors.forename: Zhengyin
authors.initials: Z
authors.lastname: Yang
authors.forename: Baodui
authors.initials: B
authors.lastname: Wang
mesh_terms: D002623:Chemistry Techniques, Analytical / Q000379:methods; D003300:Copper / Q000032:analysis*; D005063:Europium / Q000737:chemistry*; D058185:Magnetite Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008422:Materials Testing; D008832:Microchemistry / Q000295:instrumentation; D058726:Nanoconjugates / Q000737:chemistry / Q000648:ultrastructure; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012996:Solutions; D013050:Spectrometry, Fluorescence / Q000379:methods; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D058185:Magnetite Nanoparticles; D058726:Nanoconjugates; D012996:Solutions; D014874:Water Pollutants, Chemical; D014867:Water; D005063:Europium; D003300:Copper