ASSESSMENT OF MEDICAL STUDENTS HEALTH STATE ON THE BACKGROUND OF CHANGES IN AIR CLEANLINESS AND MICROCLIMATE
DOI:
https://doi.org/10.11603/1681-2786.2023.1.13858Keywords:
carbon dioxide, classroom, air exchange, microclimate, ventilation, quartzizationAbstract
Purpose: determine the content of carbon dioxide, temperature and humidit as important indicators of air cleanliness and microclimate in the room, and their impact on the physiological state of students.
Materials and Methods. The study was conducted in the educational building of the Ternopil National Medical University, in three classrooms of the department, where practical classes were held and 24 students were present at the same time. 60 measurements of air purity and microclimate parameters in classrooms were carried out: CO2 concentration, air temperature and humidity. The device “Portable (IAQ-meter) gas analyzer” was used to determine the indicators. The study was conducted in four models for the studied groups of educational classrooms, where ventilation or quartzization was carried out. The duration of the practical classes was 90 minutes; break – 40 min.
Results. During the first model, the average value of CO2 concentration did not exceed the permissible value of the norm according to the European Standard. In the second model, the concentration of CO2 significantly exceeded the recommended value, its content probably doubled, and according to the quality air classification, it was classified as IDA4 according to the Standard. Under the conditions of the third model, is degraded of the air environment in the classroom was noted (the indicator exceeded the recommended norm by 2.1 times). During the investigation of the fourth model of research, air purity according to the level of CO2, according to the European Standard, belonged to IDA3 – an acceptable level of air quality in the classroom. After airing the classrooms, the concentration of CO2 in the classroom was 183 units lower than the norm, which is the optimal condition for students to stay and study.
Conclusions. Measurements of microclimate indicators and air purity showed that under ventilation conditions, the level of CO2 improved and became acceptable norms. Under the above conditions, students actively answered questions, participated in discussions and debated. In the classroom after quartzization, the level of CO2 did not approach the air purity to the norm, which caused lethargy and inattention among students. Temperature and air humidity indicators were within the normal range in all four regimes of the studied groups.
References
Vozniak, O.T., Yurkevich, Yu.S., Myronyuk, H.V., & Savchenko, O.O. (2019). Vyznachennya produktyvnosti ventylyatsiyi prymishchennya u zminnomu rezhymi na osnovi eksperymentalʹnykh doslidzhenʹ kontsentratsiyi CO2 [Determining the productivity of room ventilation in variable mode based on experimental studies of CO2 concentration]. Suchasni tekhnolohiyi, materialy i konstruktsiyi v budivnytstvi – Modern technologies, materials and structures in construction, 25(2), 170-177 [in Ukrainian]. DOI: https://doi.org/10.31649/2311-1429-2018-2-170-177
Lyulevych, A.A. (2018). Otsinka kontsentratsiy dioksynu vuhletsyu v seredyni prymishchen [Estimation of carbon dioxin concentrations in the middle of premises]. Kyiv [in Ukrainian].
(2022). Sanitarnyy rehlament dlya doshkilnykh navchalnykh zakladiv [Sanitary regulations for preschool educational institutions]. Kyiv [in Ukrainian].
Allen, J.G., MacNaughton, P., Satish, U., Santanam, S., Vallarino, J., & Spengler, J.G. (2015). Associatios of Cognitive Function Scores with Carbon Dioxide, Ventilation, and Volatite Organic Compound Exposures in Office Workers: A Controlled Exposure Study of Green and Conventional Office Environments. Environmental Health Perspectives, 3, 26-37.
Lu, C.Y., Lin, J.M., Chen, Y.Y., & Chen, Y.C. (2015). Building-related symptoms among office employees associated with indoor carbon dioxide and total volatile organic compounds. International journal of environmental research and public health, 12(6), 5833-5845. DOI: https://doi.org/10.3390/ijerph120605833
Muscatiello, N., McCarthy, A., Kielb, C., Hsu, W.H., Hwang, S.A., & Lin, S. (2015). Classroom conditions and CO2 concentrations and teacher health symptom reporting in 10 New York State Schools. Indoor Air, 25(2), 157-167. DOI: https://doi.org/10.1111/ina.12136
Carreiro-Martins, P., Viegas, J., Papoila, A.L., Aelenei, D., Caires, I., Araújo-Martins, J., … Neuparth, N. (2016). CO(2) concentration in day care centres is related to wheezing in attending children. Eur. J. Pediatr., 173, 1041-1049. DOI: https://doi.org/10.1007/s00431-014-2288-4
Ferreira, A.M., & Cardoso, M. (2015). Indoor air quality and health in schools. J. Bras. Pneumol., 40(3), 259-268. DOI: https://doi.org/10.1590/S1806-37132014000300009
Coley, D.A., Greeves, R., & Saxby, B.K. (2017). The effect of low ventilation rates on the cognitive function of a primary school class. International Journal of Ventilation, 6, 107-112. DOI: https://doi.org/10.1080/14733315.2007.11683770
Satish, U., Mendell, M.J., Shekhar, K., Hotchi, T., Sullivan, D., Streufert, S., & Fisk, W.J. (2017). Is CO2 an Indoor Pollutant? Direct Effects of Low-to-Moderate CO2 Concentrations on Human Decision-Making Performance. Environmental Health Perspectives, 120, 1671-1677. DOI: https://doi.org/10.1289/ehp.1104789
Seppänen, O.A., Fisk, W.J., & Mendell, M.J. (2015). Association of Ventilation Rates and CO2-Concentrations with Health and other Responses in Commercial and Institutional Buildings. Indoor Air, 9, 226-252. DOI: https://doi.org/10.1111/j.1600-0668.1999.00003.x
Tsai, D.H., Lin, J.S., & Chan, C.C. (2016). Office workers' sick building syndrome and indoor carbon dioxide concentrations. J. Occup. Environ. Hyg., 9(5), 345-351. DOI: https://doi.org/10.1080/15459624.2012.675291
(2007). Ventilation for non-residential buildings – Performance requirements for ventilation and roomconditioning systems: EN 13779:2007. Brussels.
Bakó-Biró, Z., Clements-Croome, D.J., Kochhar, N., Awbi, H.B., & Williams, M.J. (2017). Ventilation rates in schools and pupils’ performance. Building and Environment, 48, 1-9. DOI: https://doi.org/10.1016/j.buildenv.2011.08.018
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2023 Bulletin of Social Hygiene and Health Protection Organization of Ukraine
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish in this journal agree to the following terms:
1. The authors reserve the right to authorship of the work and pass the journal right of first publication of this work is licensed under a Creative Commons Attribution License, which allows others to freely distribute the work published with reference to the authors of the original work and the first publication of this magazine.
2. Authors are entitled to enter into a separate agreement on additional non-exclusive distribution of work in the form in which it was published in the magazine (eg work place in the electronic repository institution or publish monographs in part), provided that the reference to the first publication of this magazine.
3. Policy magazine allows and encourages authors placement on the Internet (eg, in storage facilities or on personal websites) manuscript of how to submit the manuscript to the editor and during his editorial processing, since it contributes to productive scientific discussion and positive impact on the efficiency and dynamics of citing published work (see. The Effect of Open Access).
