CHALCOGENIDE GLASS CHEMICAL SENSORS - RELATIONSHIP BETWEEN IONIC RESPONSE, SURFACE ION-EXCHANGE AND BULK MEMBRANE-TRANSPORT

Different factors affecting chalcogenide glass chemical sensor respons e are discussed. It is shown that definite relationships between compo sition, glass structure, chemical durability, bulk and surface ionic p rocesses, and sensor performance exist. All these factors are connecte d to each other in a complicated way; therefore, further development o f new sensors with improved analytical characteristics needs a detaile d study of the chemical and physical properties of the glasses.