A novel optical chemical sensor was constructed for measurement the concentration of Hg2+ ion in solutions by covalent immobilization of thiazole yellow dye on a triacetyl cellulose film via epichlorohydrin as a linker. ...

A new method for immobilization of some indicators with amino groups on triacetyl cellulose beds wasapplied for construction of an optical sensor for measurement of low pH values. Congo red was used as apH indicator which ...