FIELD: analytical chemistry; covering piezoelectric crystal resonators with film.
SUBSTANCE: proposed method that may be found useful in redeveloping and optimizing parameters of mass-responsive sensors includes preparation of sorbent solution, its application to electrodes, and removal of free solvent from film. Resonator electrodes are held in vapors of sorbent solution heated to boiling temperature for 10 - 30 s. Used as sorbents are ethanol solutions of bee-glue of 20% mass fraction or Triton X-100 of 1% mass fractions. Proposed method provides for high sensitivity in determining materials by way of piezoelectric crystal microweighing due to reduced error in sorbent application and dispensing with additional high-cost tools.
EFFECT: enhanced frequency stability, reduced zero-signal drift, reproducible response, facilitated fuel application.
1 cl, 3 tbl, 12 ex
