IntroductionPrimary education is the largest public enterprise in Turkey, employing 484,161 teachers who instruct over 10 million children in 344,710 classrooms and 31,176 schools (1).School health programs are inclusive of the location and layout of the school, school building construction features, status, materials used, infrastructure facilities, plumbing safety, indoor air quality and water quality levels, toilets, playing areas, heating and lighting levels, service hygiene, and prevention of bio-geo-physicochemical pollution in the schools (2,3). A healthy and safe school environment encompasses the physical surroundings and the psychosocial, learning, and health-promoting environment of the school (4).These programs should include the health assessment of the students and school staff, developing, achieving, and maintaining a healthy school life for not only students, but also for school staff (5). They target the state of complete physical, mental, and social well-being of students, teachers, and the other staff in schools (6).Air pollution is formed by a complex mixture of many pollutants. The potential health risks of air pollution vary depending on the content of this mixture, the amount and the hours of the occurrence, and the day or time of year. However, in recent years, due to the cost of energy, building designs allow less air exchange, and both the chemicals used in the construction of household goods and furniture in homes and schools and the microbiological and allergic organisms in indoor environments have become more threatening (7). In particular, children, who spend 80% to 90% of their time in indoor environments such as home, child care, school, or after-school care, constitute a risk group in this sense (8). Despite the large population and concerns regarding poor indoor air quality (IAQ), systematic assessments of IAQ and health and comfort issues have rarely been undertaken in schools (9).Preschool and school-aged children often spend significant periods of time in school settings. These settings are often the first significant indoor exposure for the children to a physical environment different from the home (10). Exposure may be especially likely in portable classrooms containing composite wood products (e.g., Aim: To increase the awareness of environmental risk factors by determining the indoor air quality status of primary schools.
Materials and methods:Indoor air quality parameters in 172 classrooms of 31 primary schools in Keçiören, Ankara, were examined for the purpose of assessing the levels of air pollutants (CO, CO 2 , SO 2 , NO 2 , and formaldehyde) within primary schools.Results: Schools near heavy traffic had a statistically significant mean average of CO and SO 2 (P < 0.05). The classrooms that had more than 35 students had higher and statistically significant averages of CO 2 , SO 2 , NO 2 , and formaldehyde compared to classrooms that had fewer than 35 students (P < 0.05). Of all classrooms, 29% had 100 CFU/100 mL and higher concentrations of microorganisms, which were n...