Detection of picomolar concentrations of lead in water using albumin-based fluorescence sensor Academic Article uri icon


  • Comprehensive analysis of fluorescence of albumin shows a weak fluorescence band at 430 nm, whose intensity exhibits a remarkable sensitivity to the presence of heavy ions in water. Using this fluorescence as a marker, as low as 10 pM concentration of lead can be routinely detected. Such a great sensitivity is explained in terms of electrostatic interactions in solution, which promote protein agglomeration. The latter is independently confirmed using dynamic light scattering measurements.

author list (cited authors)

  • Saha, A., & Yakovlev, V. V.

publication date

  • January 1, 2009 11:11 AM