Using organic nanoparticle fluorescence to determine nitrite in water.
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.
Wang
Lun
L
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
Dong
Ling
L
Bian
Gui-Rong
GR
Wang
Le-Yu
LY
Xia
Ting-Ting
TT
Chen
Hong-Qi
HQ
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*
D009573:Nitrites; D011721:Pyrenes; D014874:Water Pollutants, Chemical; D014867:Water; C004482:1-aminopyrene