THE DEVELOPMENT OF AN AIR EMISSION INVENTORY AND ITS
S.R. Jaysinghe1 and A.A.P. de Alwis2
1 Air Quality Division, National Building Research Organisation
2 Department of Chemistry and Process Engineering, University of Moratuwa.
An air emission inventory is an essential planning tool in environmental
management of the air shed. Today the state of the city's and suburbs
air shed is fast becoming unsatisfactory and a recent fundamental rights
case initiated by a Non-governmental organisation to draw the attention
to this fact succeeded and has forced the authorities to accelerate implementing
guidelines and practical steps in a short time span. When reviewing standards
it is seen that we established certain standards in cases even below the
suggested WHO guidelines and implemented precious little in a technical
way thus leading to the gradual deterioration of the air shed over a period
In all these evaluations an air emission inventory is quite useful as
a development planning tool. At present Sri Lanka does not have such an
inventory for any region or locality and the steps taken to develop an
inventory for the Sapugaskanda area an area of high industrialisation
is discussed in this paper. Both stationary and mobile sources are considered.
Some air pollution assessment modelling was done to develop data and these
have also been validated from the monitoring data available.
The need for an Air Quality Index (AQI) is also stressed as this is also
a missing element in the present management system. A suggested scheme
is given and some data is analysed for the indication of air shed quality.
Department of Forestry and Environmental Science,
of Sri Jayewardenepura,Sri Lanka. 1995-2000. All rights reserved.