A simple visual and highly selective colorimetric detection of Hg2+ based on gold nanoparticles modified by 8-hydroxyquinolines and oxalates.

نویسندگان

  • Yuexia Gao
  • Xing Li
  • Yonglong Li
  • Tianhua Li
  • Yayun Zhao
  • Aiguo Wu
چکیده

Gold nanoparticles (AuNPs) modified by 8-hydroxy-quinoline (8-HQ) and stabilized by polyvinylpyrrolidone (PVP) were used for highly selective and sensitive colorimetric detection of Hg(2+) based on the quick aggregation of AuNPs leading to a color change from wine red to gray. The limit of Hg(2+) detection in real environmental water samples is 4.0 × 10(-7) M by the naked eyes and 1.0 × 10(-8) M by UV-vis spectroscopy.

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عنوان ژورنال:
  • Chemical communications

دوره 50 49  شماره 

صفحات  -

تاریخ انتشار 2014