Gateway for:

Member Countries

Highly Sensitive Gas Analyzer


Development and Creation of Automatic Highly Sensitive Gas Analyzers Based on Molecular Condensation Nuclei Effect to Detect Dangerous Substances

Tech Area / Field

  • ENV-MIN/Monitoring and Instrumentation/Environment
  • ENV-APC/Air Pollution and Control/Environment
  • ENV-EHS/Environmental Health and Safety/Environment

8 Project completed

Registration date

Completion date

Senior Project Manager
Malakhov Yu I

Leading Institute
VNIIEF, Russia, N. Novgorod reg., Sarov

Supporting institutes

  • St Petersburg State Polytechnical University, Russia, St Petersburg\nOpen Joint-Stock Company “Electrostal Science and Production Association “Neorganica”, Russia, Moscow reg., Elektrostal


  • Royal Institute of Technology / Alfvén Laboratory Fusion Plasma Physics, Sweden, Stockholm\nMicro-Sensor-Technologie Intertrade Handels GmbH, Germany, Munich

Project summary

The project’s objective is development of the new generation of highly sensitive automatically operated gas analyzers utilizing the molecular condensation nuclei (MCN) technology using the modern microprocessor devices.

The urgency of the problem of making high sensitivity gas impurities analyzing devices (which surpass the sensitivity of common gas detectors) is caused by such factors as:

  • new production facilities with possibility of emergency highly toxic air pollutions (mining and smelting works, pharmaceutical and medical works, carbonyl technologies for metal plating);
  • leakages of highly toxic substances during their production, storage or transportation, as the result of an accident, non-hermetic equipment or clapped-out filters;
  • highly toxic atmosphere pollutions, for example by dioxins, quicksilver, as a result of non-authorized waste disposal.

The results of carrying out of the project can be used for solution of the following problems:
  • fundamental research of possibility to create gas analyzer having unique sensitivity;
  • ecological monitoring of atmosphere of civil toxic production (such as nickel tetracarbonyl, iron) facilities, to protect the environment near mining and smelting works.

The fundamental scientific and technical task of the Project is development of the highly sensitive chemical combinations detection technology for gases, using molecules to aerosol particles conversion and successive turbidimetric aerosol detection.

The applied task is development of the new generation of highly sensitive automatically operated gas analyzers to ensure safety of life activity in various spheres.

The key distinctive feature of the new devices is ultra high sensitivity ensured by the state of the art molecular condensation nuclei (MCN) technology. The MCN technology uses a sequence of physicochemical impacts on a continuous stream consisting of a gas which is used as a carrier, and additions which is intended to be detected. The MCN detector can be referred to aerosol gas analyzers.

The key distinctive features of the gas analyzers to be developed are very high sensitivity and high linear dynamic range (up to eight decimal orders, compared to three decimal orders for common analyzers). The MCN detectors have high sensitivity, because unlike any other detectors, the MCN detectors produce an aerosol particle using only one molecule of a detectable addition. This is achieved by the custom selection of detecting substances and special design of gas additions to aerosol converting devices.