AAAR 36th Annual Conference October 16 - October 20, 2017 Raleigh Convention Center Raleigh, North Carolina, USA
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Exposure to PM during Different Sport Activities in a Sport Center in Astana, Kazakhstan
Mehdi Amouei Torkmahalleh, MERUYET BAZHANOVA, Karakat Kabay, Chemical Engineering Department, Nazarbayev University
Abstract Number: 684 Working Group: Aerosol Exposure
Abstract Physical activities at sport centers are becoming more popular in Kazakhstan, and thus, it is crucial to measure the exposure level of the participants to PM. Present study investigated the exposure of teenagers, adults, and students to PM at two sport facilities of Nazarbayev University, a Gymnastics Hall and a Multi-Purpose Hall located in Astana, Kazakhstan during two weeks measurement campaign. Mass concentration of five fractions of particulate matter (PM1, PM2.5, PM4, PM10 and PMtotal) were measured using a DustTrak Aerosol Monitor DRX model 8533, TSI. A Condensation Particle Counter (CPC) Model 3007, TSI and a low-cost particle counter, Dylos DC1700, were deployed to measure the number concentration of the particles. Two types of instruments including TSI IAQ Meter, and a Low-cost humidity pSense Portable CO2 Meter were used to identify CO2 concentration and comfort parameters including temperature and relative humidity. The average concentrations of 0.0073 mg/m3 for PM1, 0.0077 mg/m3 for PM2.5, 0.0079 mg/m3 for PM4, 0.0099 mg/m3 for PM10, and 0.0241 mg/m3 for PMtotal in Gymnastics Hall were observed. In the Multifunctional Hall, the average concentrations were found to be 0.0078 mg/m3 for PM1, 0.0083 mg/m3 for PM2.5, 0.0083 mg/m3 for PM4, 0.0093 mg/m3 for PM10, and 0.013 mg/m3 for PMtotal. The average PM2.5 and PM10 concentrations in the sport center were found to be lower than the limit value set by WHO. Higher particle number concentration was registered for Multifunctional Hall (peak value 19147 pt/cm3) compared to the Gymnastic Hall (peak value 10238 pt/cm3). It was found that training ball-based sports including indoor soccer, basketball and volleyball, provided higher PM concentration compared to the sports conducted with no balls, because of the dust resuspension. Number of participants and intense indoor activities greatly influenced PM concentration. For example, during Judo and Boxing classes simultaneously conducted with total of 30 people, the peak values for PM1, PM2.5, PM4 were 0.045 mg/m3, and for PM10 it was 0.070 mg/m3 in the Gymnastics Hall. The reliability of the low-cost instrument Dylos data showed in average PM>0.5µm to be 23.7 times higher than PM>2.5µm. A relationship between particle number concentration counted by Dylos and particle mass concentration estimated by DustTrak DRX will be presented. However, Dylos DC1700 Air quality monitor requires future assessment.