Spatial distribution of black carbon concentrations over roads in the Nowon-gu district of Seoul, Korea
- Spatial distribution of black carbon concentrations over roads in the Nowon-gu district of Seoul, Korea
- 이승복; 권운용; 진현철; 정재희; 배귀남
- black carbon; vehicle emission
- Issue Date
- AAAR 28th Annual Conference
- Mega-city air is contaminated with vehicle exhaust. Drivers on
roads and passengers at the roadside are easily exposed to a
flume of vehicle exhaust with high concentration. In Korea,
much governmental effort such as retrofit of diesel particulate
filters has been made since the year of 2005 for improving air
quality of a Mega-city of Seoul. In addition, implementation of
‘Environmental Zone (or Low Emission Zone)’, where old
heavy-duty vehicles with much emission are not allowed to be
driven on the roads, is being discussed recently.
In this study, black carbon concentrations over roads were
monitored with a portable aethalometer during driving on
several major roads in the Nowon-gu district of Seoul in order
to obtain their spatial distribution. The portable aetahlometer
was installed inside a passenger car, and its inlet was connected
to a plenum with a sampling tube that reached to a front
bumper. The measurement was carried out twice in the early
morning and once in the afternoon. It took about two and half
hours to travel totally 30 km in length. Location data from GPS
were logged with black carbon data.
The black carbon concentrations measured in the afternoon
ranged 0.2~71 (average: 13) micro-gram per cubic meter,
which were higher than those in early morning. This trend was
consistent to that at the roadside on a previous study.
Nanoparticle surface area concentrations deposited on the
alveolar region of a lung were also measured with black carbon
for about one hour in the early morning. The nanoparticle
surface area showed more sensitive response to vehicle exhaust
emitted from neighboring vehicles. It was easy to find out
which road should be managed to reduce the exposure to
severely polluted vehicle exhaust by virtue of the spatial
distribution of black carbon concentrations on major roads at
the test bed.
- Appears in Collections:
- KIST Publication > Conference Paper
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.