TITLE:
Evaluation of Local Scale PM Pollution Levels in Typical Street Canyon in Riga
AUTHORS:
Iveta Steinberga, Janis Bikshe Jr., Karlis Kundzins, Janis Kleperis, Janis Bikshe
KEYWORDS:
Air Pollution; PM; Riga; Street Canyon; Source-Apportionment
JOURNAL NAME:
Journal of Environmental Protection,
Vol.4 No.9,
August
29,
2013
ABSTRACT: The present study
describes long term PM10 and PM2.5 changes in typical
street canyon with particular emphasis on seasonal, diurnal variations in context
with meteorological data. In order to understand PM10 pollution
sources during 28 April 2007-31 December 2007, chemical composition measurements were done with particular
emphasis on heavy metals (As, Cd, Ni, and Pb), crustal material (Ca, Mg, Na,
and K) and anions (sulphates, nitrates, chlorides). Meteorological data used for this
evolutional analysis were measured close to traffic related stations and
several meteorological parameters were analyzed in relation to particulate
measurements. Keep in mind that atmospheric aerosols are generally hydroscopic.
Relative humidity which plays very important role in rain/snow and humidity impact
are analyzed.