HARDWARE AND SOFTWARE COMPLEX AND MASS-SENSITIVE SENSORS, USING NANOCOMPOSITE METAL-CONTAINING POLYMER COATINGS AS ACTIVE ELEMENTS FOR GAS ENVIRONMENT IDENTIFICATION 

Application

The device of sorptive analysis can be applied for quantitative express reco-gnition of the presence of air-pollutants. The basis of the device consists of the array of mass-sensitive sensors made from quartz resonators with sorptive-selective nanocomposite metal-containing polymer coatings. In case of the presence of the corresponding substances in the gas which surrounds the sensors they are absorbed by surface of the sensors, and as a result of this process their resonance frequency is changed.

The data of the resonance frequency changes are computer processed and compared with the values saved at the databases for various gases.

Main characteristics:

  1. Number of measuring channels – 8
  2. Type of sensor elements – quartz resonators with frequency 6 — 12 MHz
  3. Main relative error of frequency measurement – 0.01 %
  4. Alternating-current power supply 220 Volt 50 Hz
  5. Power consumption – less than 10 watt.
  6. Continuous operation time – 24 h.
  7. Dimensional specifications of the device 300 х 200 х 75 mm.
  8. The mass of the device no more than 500 g.
  9. Sensitivity to ammonia vapor 1-19 ppm.

Advantages:

The device makes it possible to register simultaneously up to 8 different impurities in the surrounding air with high frequency 0,01 %. Due to the detachable construction of the elements of the sensors the device can be easily modified for concentration identification of different substances and applied for a wide range of tasks at manufacturing and environment monitoring, for scientific-research aims.

Degree of product availability

  • The sample of the device for sorptive gas analysis;
  • The sample coatings of sensor elements with sorptive activity to different gases;
  • The software for electronic data processing and measurement analysis of the results.

We offer the following operations: fabrication and transfer of the device, personnel training, manufacturing of mass-sensitive sensors based on quartz resonators with sorption-selective nanocomposite metal-containing polymer coatings.

ALEXANDER ROGACHEV,
DIRECTOR OF PHYSICO-CHEMICAL RESEARCH AND DEVELOPMENT INSTITUTE,
CORRESPONDING MEMBER OF THE NATIONAL ACADEMY OF SCIENCES OF THE REPUBLIC OF BELARUS,
DOCTOR OF CHEMICAL SCIENCES, PROFESSOR,
tel. (+375 232) 50 38 03, fax (+375 232) 51 00 77,
e-mail: rogachevav@mail.ru,
http://nis.gsu.by

Russian version