Indoor concentrations of pmr0/pm2.s in Marmara University lıbrary
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Twenty-four-hour PMr5 and PMr0 sarnples were collected in the Marmara University Library Building, Istanbul, Turkey from January 5, 2014 to December 3l, 2014. The ambient mass concentrations ofPM, r and PM,n were determined by a gravimetric method. Interior environmental conditions can effect on library employees and users so the measured PMr s and PMro concentrations were compared to national and intemational Air Quality Standards (EPA, EU, WHO), which were generally below the limit values. However, the limit values were exceeded during the exam periods. PM1, and PMro concenftations were generally low in the summer The number of library users in different rooms in the Marmara University Library was recorded and the user numbers also increased during the exam periods. The PM levels correlated well with the number of library users. Indoor PM values in the Marmara University Library Building were higherthan the outdoor values in Umraniye, Istanbul during the exam periods; however they were lower in general. PM values in different libraries were lower than PM values in Marmara Univelsity Library Building. Healthy environment for employees and useN in the library building can be provided by some measures such as the adequate heat and air-conditioning systems.