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.
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Acknowledgements
The authors thank the financial supports of the National Natural Science Foundation of P.R. China (20375001), the Education Commission Natural Foundation for Young Teacher of Anhui Province (2004jq121), the Natural Science Foundation of Anhui Province (03044904), and the education Commission Natural Science Foundation of Anhui Province (2005 KJ017ZD).
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Wang, L., Dong, L., Bian, GR. et al. Using organic nanoparticle fluorescence to determine nitrite in water. Anal Bioanal Chem 382, 1300–1303 (2005). https://doi.org/10.1007/s00216-005-3250-0
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DOI: https://doi.org/10.1007/s00216-005-3250-0