title: Using organic nanoparticle fluorescence to determine nitrite in water.
abstract: Organic fluorescence nanoparticles (1-aminopyrene nanoparticles) were prepared under ultrasonic radiation and used to determine nitrite. Such nanoparticles have a broad, continuous excitation spectrum, but they are also photochemically stable and water-soluble. Nitrite determination was based upon nitrite quenching the fluorescence of the nanoparticles due to a simple diazotization reaction; a simple and specific method. Under optimal conditions, the linear range of the calibration curve was 20-1400 ng ml(-1), with a correlation coefficient of 0.9987 for nitrite. The detection limit was 3 ng ml(-1). The method was applied to various water samples from several sources. Quantitative nitrite recoveries and satisfactory results were achieved.
authors.affiliation: Anhui Key Laboratory of Functional Molecular Solids, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China. wangLun@mail.ahnu.edu.cn
authors.forename: Lun
authors.initials: L
authors.lastname: Wang
authors.forename: Ling
authors.initials: L
authors.lastname: Dong
authors.forename: Gui-Rong
authors.initials: GR
authors.lastname: Bian
authors.forename: Le-Yu
authors.initials: LY
authors.lastname: Wang
authors.forename: Ting-Ting
authors.initials: TT
authors.lastname: Xia
authors.forename: Hong-Qi
authors.initials: HQ
authors.lastname: Chen
mesh_terms: D002138:Calibration; D053758:Nanoparticles; D009573:Nitrites / Q000032:analysis*; D011721:Pyrenes / Q000737:chemistry*; D012995:Solubility; D013050:Spectrometry, Fluorescence; D014867:Water / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D009573:Nitrites; D011721:Pyrenes; D014874:Water Pollutants, Chemical; D014867:Water; C004482:1-aminopyrene