Seasonal variation and size distribution of inorganic and carbonaceous components, source identification of size-fractioned urban air particles in Kuala Lumpur, Malaysia

Jamhari, Anas Ahmad; Latif, Mohd Talib; Wahab, Muhammad Ikram A.; Hassan, Hanashriah; Othman, Murnira; Hamid, Haris Hafizal Abd; Tekasakul, Perapong; Phairuang, Worradorn; Hata, Mitsuhiko; Furuchi, Masami; Rajab, Nor Fadilah

doi:10.1016/j.chemosphere.2021.132309

Cited by 26 publications

(9 citation statements)

References 60 publications

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“…It is commonly divided into two components i.e., Organic Carbon (OC) and Elemental Carbon (EC) [6][7]. OC is typically emitted from both primary and secondary sources, whereas EC is produced solely by primary incomplete combustion [8][9][10]. Both have a significant impact on global climate change and human health [6][7].…”

Section: Introductionmentioning

confidence: 99%

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Size Segregated Carbonaceous Aerosol Down to Ultrafine Particle in Medan City, Indonesia

Putri,

Amin,

Phairuang

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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In this study, the distribution of PMs and their carbonaceous components, including organic (OC) and elemental carbon (EC) was evaluated to determine how much carbon profiles within ambient aerosol differ between four different sites in Medan city or (roadside (RS), school environment (SE), industrial area (IA), and volcano area (VA). Samples were taken by using ambient nano sampler (ANS) from February 19th to March 12th, 2019. Carbon analyser followed by IMPROVE_TOR methods was used to evaluate the carbonous component in all sites. Overall, OC is the primary carbon component, comprising more than 60% of all sites. Regarding particle size, the largest OC content was recorded in PM0.5-1 across all locations, suggesting that this particle size should be the primary focus of future evaluations of the consequences of biomass burning. The concentration of soot-EC dropped with the increase in particle size, since it was commonly influenced by vehicle emissions, which typically generated ultrafine and fine particles. PM0.1 has the greatest concentration of soot-EC. Due to their proximity to the city’s busiest thoroughfare, RS and SE sites had a larger soot-EC proportion than the two remaining sites (IA and VA) (Sisingamangaraja Street).

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Section: Introductionmentioning

confidence: 99%

“…Their ratios, such as OC/EC, char-EC/soot-EC, soot-EC/TC, and so on, could be used to identify the sources of carbonaceous material in the environment [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Size Segregated Carbonaceous Aerosol Down to Ultrafine Particle in Medan City, Indonesia

Putri,

Amin,

Phairuang

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Studies of PM in Thailand and Asian countries are currently based on measurements of PM 10 and PM 2.5 through ground-based monitoring and mathematical modeling [5][6][7][8][9][10][11]. However, data on the abundance, sources, monthly distribution together with seasonal variations in the concentrations of carbon and elements in the nano-size range (PM 0.1 ; particles of diameter ≤ 0.1 µm or 100 nm) and total suspended particles (TSP) remain scarce in developing countries, including Thailand and its neighboring countries [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Carbon and Trace Element Compositions of Total Suspended Particles (TSP) and Nanoparticles (PM0.1) in Ambient Air of Southern Thailand and Characterization of Their Sources

et al. 2022

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The concentration of total suspended particles (TSP) and nanoparticles (PM0.1) over Hat Yai city, Songkhla province, southern Thailand was measured in 2019. Organic carbon (OC) and elemental carbon (EC) were evaluated by carbon aerosol analyzer (IMPROVE-TOR) method. Thirteen trace elements including Al, Ba, K, Cu, Cr, Fe, Mg, Mn, Na, Ni, Ti, Pb, and Zn were evaluated by ICP-OES. Annual average TSP and PM0.1 mass concentrations were determined to be 58.3 ± 7.8 and 10.4 ± 1.2 µg/m3, respectively. The highest levels of PM occurred in the wet season with the corresponding values for the dry seasons being lower. The averaged OC/EC ratio ranged from 3.8–4.2 (TSP) and 2.5–2.7 (PM0.1). The char to soot ratios were constantly less than 1.0 for both TSP and PM0.1, indicating that land transportation is the main emission source. A principal component analysis (PCA) revealed that road transportation, industry, and biomass burning are the key sources of these particles. However, PM arising from Indonesian peatland fires causes an increase in the carbon and trace element concentrations in southern Thailand. The findings make useful information for air quality management and strategies for controlling this problem, based on a source apportionment analysis.

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“…Studies of PM in Thailand and Asian countries are currently based on measurements of PM10 and PM2.5 through ground-based monitoring and mathematical modeling [5][6][7][8][9][10][11]. However, data on the abundance, sources, monthly distribution together with seasonal variations in the concentrations of carbon and elements in the nano-size range (PM0.1; particles of diameter ≤ 0.1 µm or 100 nm) and total suspended particles (TSP) remain scarce in developing countries, including Thailand and its neighboring countries [12][13][14] Particle-bound total carbon (TC) can be separated into two types, i.e., organic carbon (OC) and elemental carbon (EC) or black carbon (BC) [15]. The term BC is loosely equivalent to EC liable on the analytical method being used [16,17].…”

Section: Introductionmentioning

confidence: 99%

Carbon and Trace Element Compositions of Total Suspended Particles (TSP) and Nanoparticles (PM<sub>0.1</sub>) in Ambient Air of Southern Thailand and Characterization of Their Sources

Inerb¹,

Phairuang²,

Paluang³

et al. 2022

Preprint

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The concentration of total suspended particles (TSP) and nanoparticles (PM0.1) over Hat Yai city, Songkhla province, southern Thailand was measured in 2019. Organic carbon (OC) and elemental carbon (EC) were evaluated by carbon aerosol analyzer (IMPROVE-TOR) method. Thirteen trace elements including Al, Ba, K, Cu, Cr, Fe, Mg, Mn, Na, Ni, Ti, Pb, and Zn were evaluated by ICP-OES. Annual average TSP and PM0.1 mass concentrations were determined to be 58.3 ± 7.8 and 10.4 ± 1.2 µg/m3, respectively. The highest levels of PM occurred in the wet season with the corresponding values for the dry seasons being lower. The annual average OC/EC ratio ranged from 3.8 - 4.2 (TSP) and 2.5 - 2.7 (PM0.1). The char to soot ratios were constantly less than 1.0 for both TSP and PM0.1, indicating that land transportation is the main emission source. A principal component analysis (PCA) revealed that road transportation, industry, and biomass burning are the key sources of these particles. However, PM arising from Indonesian peatland fires causes an increase in the carbon and trace element concentrations in southern Thailand. The findings make useful information for air quality management and strategies for controlling this problem, based on a source apportionment analysis.

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Seasonal variation and size distribution of inorganic and carbonaceous components, source identification of size-fractioned urban air particles in Kuala Lumpur, Malaysia

Cited by 26 publications

References 60 publications

Size Segregated Carbonaceous Aerosol Down to Ultrafine Particle in Medan City, Indonesia

Size Segregated Carbonaceous Aerosol Down to Ultrafine Particle in Medan City, Indonesia

Carbon and Trace Element Compositions of Total Suspended Particles (TSP) and Nanoparticles (PM0.1) in Ambient Air of Southern Thailand and Characterization of Their Sources

Carbon and Trace Element Compositions of Total Suspended Particles (TSP) and Nanoparticles (PM<sub>0.1</sub>) in Ambient Air of Southern Thailand and Characterization of Their Sources

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