The examination of carbon dioxide in the conference rooms of State University of Medicine and Pharmacy Nicolae Testemitanu

Abstract

Carbon bioxide is a colorless gas, odorless, it doesn’t irritate the mucous membrane and it can’t be felt. The carbon bioxide is 1,5 times heavirr then the air, that’s way it is usually concentrated in the lower part of closed spaces, causing the intoxication of the organism, but also it’s a sanitory indicator that shows up the ventilation’s work quality in spaces with different destinations, as Gh. Ostrofet metions. In outdoor air in urban conditions, the carbon bioxide is found in concentrations of 0.3-0.4 %, there for it shouldn’t overcome 0.1% or 1000ppm in closed spaces. This amount remains at constant values in nature, because it’s intake and output is in perpetual balance. Tne cabon bioxide is expeled during exhalation in the process of human respiration, this fenomen consisting it’s main source in closed spaces. An adult expels 15-22l of carbon bioxide per hour. It expels at yhe cellular firing trough the expeled air, that contains 3.4-4.5% of CO2.Enormous concentrations of carbon bioxide comes out in closed spaces or in areas where are present agressed sources of CO2.To prevent intoxication with carbon bioxide it’s required to assure an efficient ventilation in all the situations that can advantage the expansion of carbon bioxide. Concentration (fermentation rooms, mines, shelters). The carbon bioxide, increasing concurrent with the changes of the factors that determine the air blemish in crowded rooms, is used as an vitiate indicator of the air. The admissible amount of carbon bioxide in closed scaces is of 0.1%, as I. Bahnarel mentions.