scholarly journals Determination of dependence of indoor carbon dioxide concentration on the external concentration

ScienceRise ◽  
2018 ◽  
Vol 11 (0) ◽  
pp. 43-45
Author(s):  
Vitaliy Ivasenko ◽  
Artemii Liulevych
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Concentration ◽  
External Concentration

scholarly journals Method for Estimation of CO2 Gains from Persons in Builidings

Proceedings ◽  
2018 ◽  
Vol 2 (20) ◽  
pp. 1309 ◽  
Author(s):  
Antonio Rodero ◽  
Dorota Anna Krawczyk
Keyword(s):  
Carbon Dioxide ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Carbon Dioxide Concentration ◽  
Co2 Concentration ◽  
Males And Females ◽  
Sources Of Co2

Carbon dioxide concentration is an important parameter to know Indoor Air Quality of a building. One of the most important sources of CO2 in poor ventilated building is human activity. This work presents a method for experimental determination of human CO2 generation rate based on measuring of time evolution of indoor CO2 concentration. The method is applied to 5 rooms of an educational building from Bialystok (Poland). Similar carbon dioxide gains were obtained in all rooms, around 0.0046 L/s, which correspond to theoretical CO2 generation rates of a sedentary activity for persons, males and females, between 21–30 years old, characteristics of occupants of analyzed rooms.

Determination of Carbon Dioxide in Wine

1971 ◽  
Vol 54 (4) ◽  
pp. 782-784
Author(s):  
Arthur Caputi
Keyword(s):  
Carbon Dioxide ◽  
Carbonic Anhydrase ◽  
Acid Solution ◽  
Carbon Dioxide Concentration ◽  
Control Analysis ◽  
Enzymatic Method ◽  
High Speeds ◽  
The Difference ◽  
Enzymatic Methods

Abstract A study of the various official methods available for the determination of carbon dioxide in wine was conducted. The enzymatic method, which is the fastest of the 3 available, is still relatively slow for use as a control analysis when large quantities of wines are being bottled at high speeds. A new method was devised which involves the neutralization of a wine sample with 50% NaOH to pH 10–11 and titration with a standard acid solution in the presence of carbonic anhydrase. The titer is recorded between pH 8.6 and 4.0. A degassed sample of the same wine is neutralized and titrated in the same range and its titer is subtracted from the sample titer. The difference is used to calculate the carbon dioxide concentration in the sample. Comparison to the volumetric, manometric, and enzymatic methods showed that this new titrimetric method is comparable in terms of accuracy and reproducibility and that it offers the advantage of rapidity of analysis. It is recommended that the method be studied collaboratively.

Direct Determination of Gas pH and Carbon Dioxide Concentration with pH Electrodes

2014 ◽  
Vol 91 (4) ◽  
pp. 593-596 ◽  
Author(s):  
Qinlan Yang ◽  
Jun Long ◽  
Hao Zheng ◽  
Xianqing Tian ◽  
Dean Lei ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Concentration ◽  
Direct Determination ◽  
Ph Electrodes
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