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Indoor-outdoor concentrations of particulate matter in nine microenvironments of a mix-use commercial building in megacity Delhi

Goyal, R and Kumar, P (2013) Indoor-outdoor concentrations of particulate matter in nine microenvironments of a mix-use commercial building in megacity Delhi Air Quality, Atmosphere and Health, 6 (4). pp. 747-757.

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Abstract

Three naturally and six mechanically ventilated microenvironments (MEs) of a mix-use commercial building in Delhi are used to study indoor-outdoor (I/O) relationships of particulate matter ≤10 μm (PM), ≤2.5 μm (PM), and ≤1 μm (PM). Effect of environmental and occupancy parameters on the concentrations of PM during working and non-working hours (i.e., activity and non-activity periods, respectively) are also investigated. Average outdoor concentration of PM and PM were found to exceed the 24-h averaged national standard values, showing a polluted environment surrounding the studied building. During working hours, indoor PM concentration was found 6-10 times, both PM and PM were 1.5-2 times, higher than the non-working hours in the selected MEs. The variations of indoor concentrations were highest (17.1-601.2 μg/m) for PM compared with PM (16.9-102.6 μg/m) and PM (10.6-63.6 μg/m). The I/O for PM, PM, and PM varied from 0.37-3.1, 0.2-3.2, and 0.17-2.9, respectively. The results suggest highest I/O for PM, PM, and PM as 3.1, 2.15, and 1.76, respectively, in all the three natural-ventilated MEs (canteen, kitchen, reception). Irrespective of PM types, the average I/O was <1 for mechanically ventilated MEs compared with >1 for naturally ventilated MEs. As opposed to PM, better correlation (r > 0.6) was noted between indoor PM, PM, and CO concentrations in most of the airtight MEs. © 2013 Springer Science+Business Media Dordrecht.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
AuthorsEmailORCID
Goyal, RUNSPECIFIEDUNSPECIFIED
Kumar, PUNSPECIFIEDUNSPECIFIED
Date : 2013
Identification Number : 10.1007/s11869-013-0212-0
Additional Information : The final publication is available at http://link.springer.com/article/10.1007%2Fs11869-013-0212-0
Depositing User : Symplectic Elements
Date Deposited : 24 Jan 2014 11:27
Last Modified : 01 Jan 2015 02:08
URI: http://epubs.surrey.ac.uk/id/eprint/805029

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