A new method of diagnosing a disease based on the purified exhaled air
It would seem, why you need to clean the exhaled air if the health is more useful to clean the air you breathe? This is certainly true, but the composition of the exhaled air can determine the mass of life-threatening conditions that help in the diagnosis of a number of pathologies. Moreover, the greatest danger in this case represent namely water vapor, are "diluted" pathological agents and interfere with their registration.
As we know, some of the waste products are derived through the lungs. And collecting the composition of the exhaled air data you can learn about what is happening in the body. The most obvious example - the banal hangover, when the lungs are derived aldehydes. To analyze the composition of the air allows infrared spectroscopy, but, as already indicated, it results in significant distortion introduces the water vapor content.
According to the publication Journal of Breath Research, a joint team of scientists from Russia and Germany created a way to remove these vapors. Their method is based on the difference in the physical properties of gases. The fact that there is a transition point in its liquid phase for each gas. Therefore, creating a certain condition can be separated, "one of the" breath. Given that the composition of atmospheric air is known, and that it is saturated with water with a high partial pressure, it becomes quite simple to separate it. Experts have created a special cooling condenser, which is tested for 5 people between the ages of 35 to 77 years. To collect a liter of exhaled air takes about 1 minute. Moreover, after the procedure the water content in the exhaled air is reduced 2500 times. After applying infrared spectrometry in exhaled air, in addition to standard components, methane, carbon monoxide have been found, carbon dioxide, acetone, acetaldehyde and isoprene which are normally "masked" with water. During the experiments a series of the content thereof was within the normal range, but in the study of "artificial" air samples saturated dangerous content of these substances, infrared spectrometry did not detect violations to "saturated" air, while after the "cleaning" hazardous components detected no problem.