Gas Analysis Methods. What Can an Electronic Nose Do?

The current level of technological development, the desire for safety and comfort in everyday life have led humanity to the widespread use of various sensors that monitor the parameters of the space around us. One of the key areas in the field of control is the analysis of volatile compounds. Traditional analytical tools are various analyzers for determining the qualitative or quantitative composition of gas mixtures (gas analyzers). The use of gas chromatography-mass spectrometry allows you to determine the molecular weight, elemental composition and molecular structure of compounds present in the sample. These methods require a complex and expensive sampling system for analysis in laboratory conditions. Today, the electronic nose technology is actively developing. What are its features and capabilities? What is fundamentally new in it compared to classical methods? Will it become a replacement or addition to traditional tools, what problems can it solve?