News from ISGlobal
An international team led by the ISGlobal carried out a study in India aimed at finding out the influence of specific microenvironments on exposure to air pollution in low- and middle-income countries. This was the first time that wearable cameras were used with personal air pollution monitors to identify drivers of exposure to fine particulate matter with a diameter smaller than 2.5 μm (PM2.5).
45 people living near the city of Hyderabad participated in this project and the results, published in the journal Environment International, showed that men had slightly higher daily mean PM2.5 exposure (43 μg/m3) than women (39 μg/m3), although both values were considerably higher than the daily safe limit established by the World Health Organisation (10 μg/m3). These exposure levels can be related with the spaces where men and women spend their time. According to the pictures took by the wearable cameras, for women the most frequent visual concepts were the kitchen followed by presence on the road, meanwhile for men were road and eating. For both, the visual concepts associated with the highest pollution levels were smoking, biomass cooking unit, fire (visible flame or smoke) and presence in the kitchen.
According to Cathryn Tonne, ISGlobal researcher and coordinator of the study, “wearable cameras identified a wide range of activities and settings associated with exposure to air pollution that are difficult to identify using other methodologies. They are particularly useful for identifying microenvironments that generate the highest exposures”. - Carlos Sierra / PRBB
Salmon M, Milà C, Bhogadi S, Addanki S, Madhira P, Muddepaka N, Mora A, Sanchez M, Kinra S, Sreekanth V, Doherty A, Marshall JD, Tonne C. Wearable camera-derived microenvironments in relation to personal exposure to PM2.5. Environ Int. 2018 May 17;117:300-307. doi: 10.1016/j.envint.2018.05.021