Sains Malaysiana 54(4)(2025): 1037-1052

http://doi.org/10.17576/jsm-2025-5404-06

 

Polycyclic Aromatic Hydrocarbons in Volatile and Particle Phases over the Vicinity of Petrochemical Refinery Areas

(Hidrokarbon Aromatik Polisiklik dalam Fasa Meruap dan Fasa Zarah di Persekitaran Kawasan Penapisan Petrokimia)

 

SHARANYA RAMANATHAN¹, SITI JARIANI MOHD JANI¹, ZAMZAM T.A. RAMLY², MUHAMMAD NURUL HUDA³, NOWSHIN JAHAN LAMIA⁴, NAZIFA NAWYAL⁴ & MD FIROZ KHAN^4,*

 

¹Department of Chemistry, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia

²Department of Environment, Faculty of Forestry and Environment, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia

³Centre for Advanced Research in Sciences (CARS) University of Dhaka, Dhaka 1000, Bangladesh

⁴Department of Environmental Science and Management, North South University, Bashundhara, Dhaka 1229, Bangladesh

 

Diserahkan: 10 Jun 2024/ Diterima: 17 Disember 2024

 

Abstract

The distribution of gaseous and particulate polycyclic aromatic hydrocarbons (PAHs), sources, and human exposure were studied around a petrochemical site located in Melaka, Malaysia from March 2021 - March 2022. Polyurethane (PUF) sampler devices were placed in six different areas to collect gaseous phase PAHs, and a High Volume Air Sampler (HVS) device was placed at a single location to collect PM_2.5-bound PAHs. PUF samplers utilize porous foam to absorb PAHs passively with zero external power for long-term exposure monitoring. Meanwhile, the HVS device draws air at higher flow rates for more than a day. A total of sixteen PAHs were analyzed in both particulate and gaseous phases. The average concentrations for the gaseous phase (n=48) were 15.90±27.29, 10.41±16.74, 7.47±18.18, 8.19±15.70, 9.39±19.35, and 11.19±28.35 ng/m³ at Sri Vanathandavar Temple, Masjid Wadhi, Tadika Cahaya, Tadika Pasti, Monforth Youth Centre, and Maha Mariamman Temple, respectively, whereas the average concentration of particulate phase (n=35) was 0.24±0.23 ng/m³ at SK Sungai Udang. In the gaseous phase, the seasonal variations at sampling sites in Southwest Monsoon (June – September) observed the greatest level at 13.89±4.69 ng/m³ and the lowest during Intermonsoon 1 (October – November) at 8.22±5.26 ng/m³. The diagnostic ratio showed that the primary contributors of PAHs in both phases are traffic emissions, petroleum and coal burning. The total Benzo(a)Pyrene equivalent carcinogenic (BaP_eq) exposure was 5.27 - 22.02 ng/m³ in the volatile phase and 1.18 ng/m³ in the particulate aerosol phase. For carcinogenic risk, the incremental lifetime cancer risk (ILCR) in adults was higher compared to children and adolescents in both gaseous and particulate phases. The Hazard Quotient (HQ) for the adolescent in the gaseous phase (9.86E-03) was relatively higher compared to the particulate aerosol phase (1.01E-03).

Keywords: Carcinogens; passive air sampling; petroleum sites; sources

Abstrak

Pengagihan hidrokarbon aromatik polisiklik (PAH) dalam gas dan sumber zarah serta pendedahan manusia kepada PAH telah dikaji di sekitar tapak petrokimia yang terletak di Melaka dari Mac 2021 hingga Mac 2022. Peranti pensampelan poliuretana (PUF) diletakkan di enam lokasi untuk mengumpul PAH fasa gas, manakala satu peranti pengambil sampel udara berkelantangan tinggi (HVS) digunakan di satu lokasi untuk mengumpul PAH terikat PM_2.5. ​PUF menyerap PAH secara pasif tanpa kuasa luar untuk pemantauan jangka panjang, sementara HVS menarik udara pada kadar aliran tinggi untuk beberapa hari. Sebanyak enam belas PAH telah dianalisis daripada fasa zarah dan gas. Kepekatan purata untuk fasa gas (n=48) ialah 15.90±27.29, 10.41±16.74, 7.47±18.18, 8.19±15.70, 9.39±19.35 dan 11.19±28.35 ng/m³ masing-masing di Kuil Sri Vanathandavar, Masjid Wadhi, Tadika Cahaya, Tadika Pasti, Pusat Belia Monforth dan Kuil Maha Mariamman, manakala purata kepekatan zarah di SK Sungai Udang (n=35) ialah 0.24±0.23 ng/m³. Dalam fasa gas, variasi bermusim di tapak pensampelan pada Monsun Barat Daya (Jun - September) memerhatikan kepekatan purata terbesar pada 13.89±4.69 ng/m³ dan yang terendah semasa antara monsun 1 (Oktober - November) pada 8.22±5.26 ng/m³. Nisbah diagnostik mendedahkan bahawa penyumbang utama PAH dalam kedua-dua fasa ialah pelepasan lalu lintas, petroleum dan pembakaran arang batu. Jumlah pendedahan karsinogenik setara Benzo(a)Pirena (BaP_eq) ialah 5.27 - 22.02 ng/m³ untuk fasa gas dan 1.18 ng/m³ untuk fasa zarah. Untuk risiko karsinogenik, peningkatan risiko kanser seumur hidup (ILCR) pada orang dewasa adalah lebih tinggi berbanding kanak-kanak dan remaja dalam kedua-dua fasa gas dan zarah. Darjah bahaya (HQ) untuk kumpulan remaja dalam fasa gas (9.86E-03) adalah lebih tinggi berbanding fasa zarah (1.01E-03).

Kata kunci: Karsinogen; persampelan udara pasif; sumber; tapak petroleum

 

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*Pengarang untuk surat-menyurat; email: jar0101@um.edu.my