Fluorescent microsphere fiber optic microsensor array for direct iodide detection at low picomolar concentrations.
Fluorescent optode microspheres doped with the halide-selective receptor [9]mercuracarborand-3 and a lipophilic pH fluoroionophore were found to exhibit picomolar limits of detection to iodide at pH 3.5, and were used to monitor the precipitation of iodide by silver ions at subnanomolar concentrations, just above their calculated solubility.
Wygladacz
Katarzyna
K
Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA.
Bakker
Eric
E
D011232:Chemical Precipitation; D005336:Fiber Optic Technology; D005453:Fluorescence; D006863:Hydrogen-Ion Concentration; D007454:Iodides / Q000032:analysis*; D007476:Ionophores / Q000737:chemistry; D046228:Microarray Analysis / Q000379:methods; D008863:Microspheres; D055100:Optical Fibers; D009941:Organomercury Compounds / Q000737:chemistry
D007454:Iodides; D007476:Ionophores; D009941:Organomercury Compounds; C119005:mercuracarborand-3