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Behaviour of selected criteria air pollutants during high particulate event

Behaviour of selected criteria air pollutants during high particulate event / Leong Weng Woh
Nitrogen Dioksida (NO2), Ozon (O3), dan zarah terampai yang saiz kurang daripada 10 mikron (PM10) adalah pencemar udara yang diukur dalam Garis Panduan Kualiti Udara Persekitaran Malaysia sejak tahun 1989. Fokus kajian ini adalah interaksi antara setiap pencemar udara serta kesan siang hari (DT), malam (NT), empat musim tengkujuh dan peristiwa zarah tinggi yang berlaku dalam satu tahun. Daripada hasil analisis yang diperoleh, variasi bermusim menunjukkan kesan yang paling minima terhadap trend tahunan bagi setiap bahan pencemar. Walaupun kesan terhadap setiap pencemar adalah kurang, kesannya kepada nilai bulanan menunjukkan bahawa HPE mempunyai nilai kepekatan PM10 yang tertinggi sebanyak 116,16 μg/m3. Di samping itu, peralihan monsun bulan April-Mei mempunyai kepekatan purata yang paling rendah bagi PM10 (24.09 μg/m3), O3 (5.35ppb dan 8.83 ppb) dan NO2 (6.61 ppb dan 7.93 ppb) manakala peralihan monsoon bulan September- October lebih tinggi daripada bulan April-Mei (PM10 dengan 53.20 μg/m3; O3 dengan 22.33 ppb dan NO2 dengan 8.29 ppb). DT dan NT menunjukkan bahawa O3 dan NO2 sangat kepada aktiviti manusia seharian dan cahaya matahari kerana kedua-dua bahan pencemar mempunyai perbezaan yang besar berlaku antara DT dan NT dengan peratusan perbezaan sebanyak 50% untuk O3 dan 35% untuk NO2. Selain itu, kajian juga menunjukkan bahawa kepekatan maxima PM10 di stesen pemantauan Taiping mempunyai pekali korelasi positif terhadap O3 yang menunjukkan bahawa peningkatan PM10 akan menyebabkan peningkatan O3. Kajian ini juga memasuki lima kawansan kajian yang berbeza, iaitu CA04, CA07, CA22, CA25, dan CA38 untuk mengkaji pengaruh daripada HPE kepada nilai kepekatan PM10, O3, NO dan NO2. Dari hasil pekali korelasi, nilai R bagi pencemar udara semasa HPE adalah lebih rendah daripada semasa bukan HPE. _______________________________________________________________________________________________________ Nitrogen Dioxide (NO2), Ground Level Ozone (O3), and Particulate Matter with size less than 10 micron (PM10) are air pollutants measured in Malaysia Ambient Air Quality Guideline since 1989. Focus of this research is the interaction between each air pollutant as well as the effects of daytime (DT), nighttime (NT), 4 monsoon seasons and high particulate events that occurred in one year. Descriptive analysis and diurnal plot is produced by using Microsoft Excel 2016. From the result of the analysis, seasonal variation shows least effect on the annual trends for each pollutant. Even the effect on each pollutant is less significant, the effect to monthly mean value shows that HPE have highest mean value PM10 concentration of 116.16 μg/m3 while April-May inter-monsoon have the lowest concentration of all three air quality parameters with PM10 (24.09 μg/m3), O3 (5.35 ppb and 8.83 ppb) and NO2 (6.61 ppb and 7.93 ppb) while September-October inter-monsoon has higher mean concentration than April-Mei (PM10 with 53.20 μg/m3; O3 with 22.33 ppb dan NO2 with 8.29 ppb). DT and NT provide the information whereby O3 and NO2 are highly dependent on the daily human activities and sunlight as these two pollutants have drastically difference between DT and NT. Besides, study also shown that the mean concentration of PM10 in Taiping monitoring station has positive correlation coefficient towards O3 which dedicate that the increase of PM10 will result in increase of O3. Dissertation also include analysis of 5 different monitoring station, CA04, CA07, CA22, CA25, and CA38 to study the influence of high particulate event on concentration of PM10, O3, NO, and NO2. From the results of correlation coefficient, the R value for these air pollutants during HPE is lower than during non-HPE.
Contributor(s):
Leong Weng Woh - Author
Primary Item Type:
Final Year Project
Identifiers:
Barcode : 00003106708
Accession Number : 875006831
Language:
English
Subject Keywords:
Nitrogen Dioxide; Ground Level Ozone; Particulate Matter
First presented to the public:
6/1/2017
Original Publication Date:
3/23/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Civil Engineering
Citation:
Extents:
Number of Pages - 91
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-03-23 11:15:44.727
Date Last Updated
2020-05-15 14:37:10.771
Submitter:
Mohd Jasnizam Mohd Salleh

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