Analysis Gas

Gas analysis is a set of methods designed for the qualitative and quantitative determination of the gas composition of various environments. In physiology, biochemistry and medicine, gas analysis is widely used in the analysis of exhaled gas, venous blood and arterial blood, as it allows one to determine the rate of metabolic processes in tissues and assess the efficiency of the respiratory system.

One of the classical methods of gas analysis is the Magnus gasometer method. This method appeared in 1776 and was developed by the Scottish chemist D. Magnus. The gas meter is a simple device consisting of three separate parts - a thermostat, a gas outlet tube and a gas meter. The thermostat ensures a constant temperature in the gasometer, and the gas outlet tube is connected to the source of the gas mixture. A gas meter records the amount of gas passing through it per unit of time.

There are several modifications of the Magnuss gasometer method, but the basic principle remains unchanged: several bottles with a working mixture are placed in a gasometric thermostat. The gas passes through the capillary tube of the gas outlet system and enters the internal space of the vessel, occupying the entire volume. In this case, the gas pressure raises the liquid into the glass receiver to the set level (determined by calibration). As the gas passes through the solution, it reacts chemically with many liquid reagents. Of greatest interest is the indicator of change in the concentration of a substance relative to the initial initial concentration. The measured volume of liquid makes it possible to determine the total content of the substance.

The main advantages of the Magnus gas analyzer method are its simplicity and high measurement accuracy. However, this method has its disadvantages, for example, it requires the use of large amounts of solvents, which makes

Gas chromatography is a set of methods for qualitative and quantitative analysis of gaseous substances. This section includes: • Gas chromatography; • Mass spectrometry of molecular ions; • Dipole moment, electronic absorption spectra; • Spectral analysis, polarimetric method;

The significance of the method: • To determine the qualitative composition of complex mixtures of gases and their quantitative relationships with each other; • Assessment of the quantitative content of gas impurities in the environment; • Determination of the chemical composition of gases as a component of a mixture;