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Preliminary Assessment of Air Pollutant Sources Identification by Using
Chemometric Analysis
Zaharin Bin Ahmad
Supervisor: Dr. Nurul Adyani Binti Ghazali
Bachelor of Technology (Environment)
School of Ocean Engineering
Universiti Malaysia Terengganu
This study aims to carry out a preliminary assessment for pollutant sources
identification using a statistical approach which is chemometric analysis consisting of
Hierarchical Agglomerative Cluster Analysis (HACA) and Discriminant Analysis (DA) at
three selected sites. Both statistical methods were applied to identify pollution sources
for each monitoring site and was verified by profiling work. The HACA results grouped
the five air pollutants into 3 different clusters based on the characteristics of
pollutants; Cluster 1 (NO2 and SO2), Cluster 2 (O3) and Cluster 3 (PM10 and CO) which
represents possible sources from traffic emissions, transformation from primary
pollutants and industries, respectively. The DA provide values of correct assignation
of 95.4%, 72.20% and 89% by using the standard, forward and backward stepwise
modes, respectively. While profiling work shows both sites were surrounded by traffics
and industries. Results from this study perhaps can be used to provide an effective
plan to reduce the emission of air pollutants
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