Abstract
Detection of Hg2+ in complex natural environmental conditions is extremely challenging, and no entirely successful methods currently exist. Here we report an easy-to-prepare fluorescent sensor B3 with 2-aminophenol as Hg2+ receptor, which exhibits selective fluorescence enhancement toward Hg2+ over other metal ions. Especially, the fluorescence enhancement was unaffected by anions and cations existing in environment and organism. Moreover, B3 can detect Hg2+ in sulphide-rich environments without cysteine, S2- or EDTA altering the fluorescence intensity. Consequently, B3 is capable of distinguishing between safe and toxic levels of Hg2+ in more complicated natural water systems with detection limit ≤2 ppb.
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Acknowledgements
This work was supported by NSF of China (21076032, 21136002 and 20923006), National Basic Research Program of China (2009CB724706), Scientific Research Fund of Liaoning Provincial Education Department (LS2010040).
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Fan, J., Peng, X., Wang, S. et al. A Fluorescence Turn-on Sensor for Hg2+ with a Simple Receptor Available in Sulphide-Rich Environments. J Fluoresc 22, 945–951 (2012). https://doi.org/10.1007/s10895-011-1033-x
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DOI: https://doi.org/10.1007/s10895-011-1033-x