Effects of exposure to carbon dioxide and bioeffluents on perceived air quality, self-assessed acute health symptoms, and cognitive performance

Indoor Air
X ZhangC Thyregod

Abstract

The purpose of this study was to examine the effects on humans of exposure to carbon dioxide (CO2 ) and bioeffluents. In three of the five exposures, the outdoor air supply rate was high enough to remove bioeffluents, resulting in a CO2 level of 500 ppm. Chemically pure CO2 was added to this reference condition to create exposure conditions with CO2 at 1000 or 3000 ppm. In two further conditions, the outdoor air supply rate was restricted so that the bioeffluent CO2 reached 1000 or 3000 ppm. The same 25 subjects were exposed for 255 min to each condition. Subjective ratings, physiological responses, and cognitive performance were measured. No statistically significant effects on perceived air quality, acute health symptoms, or cognitive performance were seen during exposures when CO2 was added. Exposures to bioeffluents with CO2 at 3000 ppm reduced perceived air quality; increased the intensity of reported headache, fatigue, sleepiness, and difficulty in thinking clearly; and reduced speed of addition, the response time in a redirection task, and the number of correct links made in the cue-utilization test. This suggests that moderate concentrations of bioeffluents, but not pure CO2 , will result in deleterious effects on occup...Continue Reading

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Citations

Jun 28, 2016·Sensors·Julian W Gardner, Timothy A Vincent
Mar 23, 2017·Indoor Air·A Persily, L de Jonge
Feb 13, 2018·Journal of Breath Research·Iván RuizErica S Forzani
Jun 19, 2018·International Journal of Environmental Health Research·Peter KapaloMartin Podolak
Dec 5, 2019·International Journal of Environmental Research and Public Health·Daxin DongJunye Xie
Jan 19, 2019·International Journal of Environmental Research and Public Health·Xiaodong CaoJoseph G Allen
Jun 20, 2020·Indoor Air·Bowen DuJeffrey A Siegel
Apr 29, 2020·International Journal of Environmental Research and Public Health·Vinh Van TranYoung-Chul Lee
Aug 10, 2018·Journal of Exposure Science & Environmental Epidemiology·Joseph G AllenJohn D Spengler
Oct 8, 2020·Journal of the Air & Waste Management Association·Mahmoud M M Abdel-Salam
Dec 18, 2020·The Science of the Total Environment·Yiyi ChenNeil Dunse
Feb 2, 2020·Environment International·Satbyul Estella KimHo Kim
Mar 24, 2021·Environmental Science and Pollution Research International·Xiaorui DengYadi Wang
Apr 6, 2021·International Journal of Hygiene and Environmental Health·Claudia C VassellaRoland Charrière
May 16, 2021·Indoor Air·Asit Kumar MishraKwok Wai Tham
Jun 21, 2019·Michael OakleyStephen Snow

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