A pH sensitive membrane based on Rhodamine B immobilized in a PVC membrane was prepared. The membrane is sensitive towards pH change of solution it contacted with due to the fluorescence spectral change of Rhodamine B...A pH sensitive membrane based on Rhodamine B immobilized in a PVC membrane was prepared. The membrane is sensitive towards pH change of solution it contacted with due to the fluorescence spectral change of Rhodamine B in it. The membrane is sensitive towards pH in range from 2 0 to 4 0 in solution with response time ≤120 s and good reversibility, reproducibility and stability.展开更多
A new porous plastic optical fiber probe was synthesized and proposed for preparation of optical chemical sensor. The basic principle,fabrication and characteristics of the porous plastic optical fiber probe are descr...A new porous plastic optical fiber probe was synthesized and proposed for preparation of optical chemical sensor. The basic principle,fabrication and characteristics of the porous plastic optical fiber probe are described in detail. The polymer fiber was made from the stock mixture of functional monomer,cross linking reagent,pore forming reagent and indicator. And it behaves great advantages as an optical fiber probe. This new porous plastic optical fiber probe has been used for preparing some optical chemical sensors, and these probes have been used for determination of halides, mercury, ammonia, oxygen and pH.展开更多
文摘A pH sensitive membrane based on Rhodamine B immobilized in a PVC membrane was prepared. The membrane is sensitive towards pH change of solution it contacted with due to the fluorescence spectral change of Rhodamine B in it. The membrane is sensitive towards pH in range from 2 0 to 4 0 in solution with response time ≤120 s and good reversibility, reproducibility and stability.
文摘A new porous plastic optical fiber probe was synthesized and proposed for preparation of optical chemical sensor. The basic principle,fabrication and characteristics of the porous plastic optical fiber probe are described in detail. The polymer fiber was made from the stock mixture of functional monomer,cross linking reagent,pore forming reagent and indicator. And it behaves great advantages as an optical fiber probe. This new porous plastic optical fiber probe has been used for preparing some optical chemical sensors, and these probes have been used for determination of halides, mercury, ammonia, oxygen and pH.
