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Keywords:

  • magnesium;
  • colorimetric detection;
  • gold nanoparticles;
  • DNA;
  • nicking endonucleases;
  • sensors;
  • biomedical applications
Thumbnail image of graphical abstract

Rapid colorimetric detection of magnesium ions is demonstrated via a convenient approach, based on EcoRI-modified gold nanoparticles and a specifically designed DNA duplex. EcoRI is an enzyme obtained from certain strains of Escherichia coli.