FIELD: chemistry.
SUBSTANCE: method of formation of receptor layer on the surface of glass-like substrate of the following composition: bismuth (III) oxide 70%, molybdenum oxide (VI) 3%, germanium oxide (IV) 17-24%, boron (III) oxide 3-10% , is performed by its further successive processing with orthophospharic acid with further annealing at temperature 90°C for twenty-four hours, modification by means of solutions of phosphoromolybdenic acid and ammonium heptamolybate with ultrasonic dispersion and drying for 24 hours. After that, thermal processing is carried out at temperature 300°C for two hours.
EFFECT: increase of stability, selectivity of receptor layer relative to ratio to hydrogen sulfide in air medium, absence of moisture influence on measurement results and improvement of accuracy of measurement of electric conductivity value.
2 cl, 3 ex
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