title: Preparation and application of a novel core/shell organic nanoparticle as a fluorescence probe in the selective determination of Cr(VI).
abstract: A novel core/shell organic nanoparticles, anthracene/poly-acrylamide (AN/PAM), has been prepared successfully. Based on the fluorescence quenching of AN/PAM nanoparticles by Cr(VI), a method for the selective determination of Cr(VI), without separation of Cr(VI) in water, was developed. Furthermore, the reaction mechanism between nano-AN/PAM and Cr(VI) was also discussed. The synthesis and reaction conditions were investigated in detail. The assay is characterized by short reaction time, very few interference stable fluorescence signals, simple instruments and sensitivity. Under optical experimental conditions, a limit of detection of 0.02 microg/ml was achieved. The calibration curve was linear over the concentration range 0.04-2.00 microg/ml with a correlation coefficient of 0.9924. The proposed method has been applied to the selective quantification of Cr(VI) in synthetic samples and waste-water samples with the satisfactory results.
authors.affiliation: College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China. wanglun@mail.ahnu.edu.cn
authors.forename: Lun
authors.initials: L
authors.lastname: Wang
authors.forename: Tingting
authors.initials: T
authors.lastname: Xia
authors.forename: Jinshui
authors.initials: J
authors.lastname: Liu
authors.forename: Leyu
authors.initials: L
authors.lastname: Wang
authors.forename: Hongqi
authors.initials: H
authors.lastname: Chen
authors.forename: Ling
authors.initials: L
authors.lastname: Dong
authors.forename: Guirong
authors.initials: G
authors.lastname: Bian
mesh_terms: D000818:Animals; D000873:Anthracenes; D002857:Chromium / Q000032:analysis*; D004528:Egg Shell / Q000737:chemistry*; D008854:Microscopy, Electron; D013050:Spectrometry, Fluorescence / Q000379:methods; D013464:Sulfuric Acids / Q000032:analysis
chemical_list: D000873:Anthracenes; D013464:Sulfuric Acids; D002857:Chromium; C034020:anthracene; C033158:sulfuric acid