Indoor Air Quality of Physical and Microbiological in Universitas Muhammadiyah Kalimantan Timur, Indonesia

Abstract

Indoor air quality is important for mental health and a comfortable environment inside the rooms. Poor indoor air quality has an impact to the sick building syndrome in occupants in the rooms. Physical and microbiological are factors that influence indoor air quality. The purpose of this study is to measure indoor air temperature, humidity, and microbiology in Universitas Muhammadiyah Kalimantan Timur in the morning and afternoon. The method used field measurement, microbiological laboratory analysis, and regression test by SPSS. High temperature and microbiology occur in the afternoon, humidity is not significant between morning and afternoon. Temperature and humidity were influenced by ventilation and the use of air conditioners in the rooms. Ventilation, the efficiency of air circulation, building type, maintenance of air conditioner, and occupant density are factors in getting clean and healthy indoor air quality to keep a comfortable environment. The statistical analysis resulted that temperature and humidity have not affected the indoor air microbiological increase.

Airborne Microbial Quality Assessment in the Educational Buildings during the COVID-19 Pandemic

“…Currently, especially during the COVID-19 pandemic, students spend around 90% of their daily time in closed places, especially at home [2]. So, there is not much outdoor air exchange in the room, as reported at the Muhammadiyah University of East Kalimantan, Indonesia [46] and the student dormitory of Jimma University [47]. The two-way ANOVA analysis showed the location variable's significance value of 0.000 (p<0.05) on the fungal bacteria parameter.…”

“…This value is related to the density and inadequate ventilation (air exchange) [54,55]. Indoor air quality is influenced by outdoor air quality, building materials, ventilation systems, and the density of occupants [46]. The type, efficiency, and regular air conditioners are essential for maintaining better hygiene and creating healthy indoor air quality [56].…”