Evaluation of indoor and outdoor air quality in university academic buildings and associated health risk

Mundackal, Antony Jino; Ngole‐Jeme, Veronica M.

doi:10.1080/09603123.2020.1828304

Cited by 17 publications

(16 citation statements)

References 51 publications

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“…Concerning NO 2 , average concentrations were approximately five times higher than the maximum levels obtained by Rodriguez et al, 2022 [ 24 ] in Spain. Maximum concentrations measured for TVOCs in classroom 2 were two times higher than the maximum concentration detected in university classrooms in South Africa and in university libraries in Turkey [ 25 , 37 ].…”

Section: Resultsmentioning

confidence: 99%

Indoor Air Quality and Bioaerosols in Spanish University Classrooms

Fuentes-Ferragud,

López,

Piera

et al. 2024

Toxics

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A comprehensive study assessed indoor air quality parameters, focusing on relevant air pollutants such as particulate matter (PM10 and PM2.5), gaseous compounds (CO, CO2, formaldehyde, NO2) and volatile/semi-volatile organic chemicals, as well as respiratory viruses (including SARS-CoV-2), fungi and bacteria in Spanish university classrooms. Non-target screening strategies evaluated the presence of organic pollutants inside and outside the classrooms. Saliva samples from teachers and students were collected to explore correlations between respiratory viruses in the air and biological samples. Indoor results revealed the punctual exceedance of recommended guidelines for CO2, formaldehyde (HCHO), volatile organic compounds (TVOCs) and PM in the least naturally ventilated classrooms. Significant differences occurred between the classes, with the least ventilated one showing higher average concentrations of CO2, HCHO, NO2, PM10 and PM2.5. A respiratory virus (rhinovirus/enterovirus) was detected in the medium naturally ventilated classroom, although saliva samples tested negative. Suspect screening tentatively identified 65 substances indoors and over 200 outdoors, with approximately half reporting a high toxicological risk based on the Cramer rules. The study provides a comprehensive overview of indoor air quality, respiratory viruses and organic pollutants in university classrooms, highlighting the variations and potential health risks associated with ventilation differences.

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Section: Resultsmentioning

confidence: 99%

Indoor Air Quality and Bioaerosols in Spanish University Classrooms

Fuentes-Ferragud,

López,

Piera

et al. 2024

Toxics

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“…Además, el rendimiento en la toma de decisiones se reduce al aumentar los niveles de CO2 (1000 -1500 ppm) en espacios similares a oficinas (Satish et al, 2012). La ventilación es un marcador asociado a la productividad y a actividades cognitivas como la atención, el razonamiento y las tareas de memoria (Kapalo et al, 2018;Mundackal & Ngole-Jeme, 2020;Ahmed et al, 2022).…”

Section: Ecuación Predictivaunclassified

EN PRENSA. Graphical-mathematical model to estimate CO2 concentration level as an indicator of SARS-CoV-2 transmission. EN PRENSA

Razura-Carmona¹,

Navidad-Murrieta²,

Casas-Rodríguez³

et al. 2023

rbio

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The first documented cases of Coronavirus disease of 2019 (COVID-19) in Wuhan city (Hubei province, China) were caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), studies mention viral transmission is more common in indoor and poorly ventilated environments compared to outdoor environments or environments with abundant airflow. In this context, this research aimed to estimate, through a mathematical model by a Box-Behnken design, the time and occupancy required in a physical space to reach CO2 levels that exceed the risk level established as a safer condition of 700 ppm for SARS-CoV-2 transmission. According to the proposed mathematical model, it is possible to predict safe conditions. With this, it was found that natural ventilation is the best option to reduce CO2 concentration, considering the occupancy/m3 and time, allowing a constant airflow; the use of air conditioners to control the temperature in rooms without natural ventilation is suggested; notwithstanding, these types of equipment are not designed to reduce CO2 concentration. Thus, their use in rooms with open windows and doors leads to a shorter equipment lifetime, for this reason, its operation in special conditions, such as in rooms without natural ventilation should be considered.

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“…In addition to this, according to Fan et al [84], diluting indoor air pollutants with fresh outdoor air is the most convenient way to lower VOCs values. While assessing air pollutants in university buildings, Mundackal and Ngole-Jeme [85] observed high VOCs concentrations. They have recommended additional ventilation and frequent monitoring of IAQ.…”

Section: Ventilationmentioning

confidence: 99%

Filling the Health Gap in Energy Performance Certificates to Reduce Pulmonary Diseases Due to Bad Indoor Air Quality

Reis

Dias

Tavares

2022

Lecture Notes in Civil Engineering

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translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, expressed or implied, with respect to the material contained herein or for any errors or omissions that may have been made. The publisher remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Evaluation of indoor and outdoor air quality in university academic buildings and associated health risk

Cited by 17 publications

References 51 publications

Indoor Air Quality and Bioaerosols in Spanish University Classrooms

Indoor Air Quality and Bioaerosols in Spanish University Classrooms

EN PRENSA. Graphical-mathematical model to estimate CO2 concentration level as an indicator of SARS-CoV-2 transmission. EN PRENSA

Filling the Health Gap in Energy Performance Certificates to Reduce Pulmonary Diseases Due to Bad Indoor Air Quality

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