Concentration and characterization of PM10 during hazy and non-hazy episodes in Malaysia

Lai, Hui Shan (2015) Concentration and characterization of PM10 during hazy and non-hazy episodes in Malaysia. Universiti Malaysia Sabah. (Unpublished)

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Abstract

The objectives of this work were to analyse the monthly variation of the concentration of airborne PM10; characterise the chemical composition and morphology of PM10 and identify the sources of the PM10 of year 2006 in Malaysia. The concentrations and samples of PM10 of year 2006 at 6 stations (Bayan Lepas, Petaling Jaya, Kuantan, Senai, Kuching and Kota Kinabalu), satellite and meteorological data were collected from different departments (DOE and MMO) and websites (NASA - FIRMS Web Fire mapper and Live Access Server (LAS) NOAA PMEL) . to carry out the analysis. The analysis for chemical composition (Mg, K, Ca, Zn and Fe) and morphology (shape, surface and aerodynamic diameter) of the sample PM10 were carried out by using ICP-OES and SEM-EDX respectively. The sources of the PM10 were identified by using HYSPLIT-WEB model. From July to October (southwest monsoon), the concentration of PM10 was comparatively higher than the other months and also exceeded the RMAAQ, therefore, was defined as hazy episode and the others were non-hazy episode. The concentration of the selected elements in the sample of PM10 was found varied between non-hazy and hazy episodes at different station. The highest concentration of the selected element is potassium (K) which is mainly come from biomass burning and crustal sources during both non-hazy and hazy episode. The morphology of the particles in terms of shape and surface are vary largely although the elemental composition of the particles are similar. The sources of the PM10, the PM10 at most of the stations were found came from both long-range and short-range trans-boundary air pollution.

Item Type: Academic Exercise
Uncontrolled Keywords: monthly variation, airborne, chemical composition
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions: FACULTY > Faculty of Science and Natural Resources
Depositing User: Munira
Date Deposited: 03 Feb 2018 13:52
Last Modified: 03 Feb 2018 13:52
URI: http://eprints.ums.edu.my/id/eprint/18541

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