(NO2) And Particulates (PM10 And PM2.5) Levels
In Underground And Elevated Car Parks In
Kota Kinabalu City
Author(s)
J. Sentian & L.B. Ngoh
Abstract
The concentration levels of carbon monoxide (CO), nitrogen dioxide (NO2) and
particulates (PM10 and PM2.5) in underground and elevated car parks in Kota
Kinabalu city were studied for a period of six months. The maximum 15-min
average concentration of CO in the underground car parks was found to be
higher than in elevated car parks, both during weekends and weekdays.
Meanwhile for NO2, the maximum concentrations were comparatively higher in
elevated car parks than in underground car park. Results have shown that none of
the CO and NO2 concentration levels exceeded the Swedish STEL (15-min
average) of 100 ppm and 5 ppm respectively. However, based on an 8-hr
average, only CO concentration (26.0 to 29.5 ppm) in the WP underground car
park during weekends has exceeded the Swedish Hygienic Limit (20 p
Keywords
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