IDENTIFICATION OF CHRYSOTILE IN BRAKE PADS AND LININGS FROM MALAYSIAN VEHICLES AND HEAVY VEHICLES BY USING POLARIZED LIGHT MICROSCOPE (PLM)

Authors

  • Maryam Zahaba Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia, Jalan Sultan Ahmad Shah, 25200 Kuantan, Pahang, Malaysia https://orcid.org/0009-0000-0345-8787
  • Ungku Aida Farzana Ungku Azly Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia, Jalan Sultan Ahmad Shah, 25200 Kuantan, Pahang, Malaysia https://orcid.org/0000-0002-1479-8194
  • Nur Sarah Fatihah Tamsi Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia, Jalan Sultan Ahmad Shah, 25200 Kuantan, Pahang, Malaysia https://orcid.org/0000-0002-8661-0744
  • Saiful Arifin Shafiee Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia, Jalan Sultan Ahmad Shah, 25200 Kuantan, Pahang, Malaysia https://orcid.org/0000-0003-0907-624X
  • Hazrin Abdul Hadi IIUM Entrepreneurship & Consultancies Sdn. Bhd., Research Management Centre, International Islamic University Malaysia, 53100 Jalan Gombak, Kuala Lumpur, Malaysia
  • Muhammad Zubir Yusof Department of Community Medicine, Kulliyyah of Medicine, International Islamic University Malaysia, Jalan Sultan Ahmad Shah, 25200 Kuantan, Pahang, Malaysia https://orcid.org/0000-0003-2610-146X
  • Mohd Shukri Mohd Aris Centre of Environmental Health & Safety, Faculty of Health Science, Universiti Teknologi MARA, Puncak Alam Campus, 42300 Selangor, Malaysia
  • Mohd Norhafsam Maghpor National Institute of Occupational Safety and Health, Lot 1, Jalan 15/1, Section 15, 43650 Bandar Baru Bangi, Selangor, Malaysia
  • Nor Mohd Razif Norain National Institute of Occupational Safety and Health, Lot 1, Jalan 15/1, Section 15, 43650 Bandar Baru Bangi, Selangor, Malaysia https://orcid.org/0000-0002-9984-550X

DOI:

https://doi.org/10.11113/jurnalteknologi.v85.19440

Keywords:

Asbestos, chrysotile, brake pad, brake lining, polarized Light microscope (PLM)

Abstract

Exposure to types of asbestos such as chrysotile and crocidolite increases respiratory disease risks such as lung cancer, mesothelioma, and asbestosis. Nevertheless, asbestos products banning in Malaysia is only limited to crocidolite as per stated in OSHA (Prohibition of Use of Substance) Order 1999, though other types are highly suspected to be found in asbestos-containing materials (ACM) like brake pads and linings. This study ascertains the presence of asbestos fibres, particularly chrysotile, in brake pads and linings used in Malaysia's vehicle and heavy vehicle sector. Seven different brake pads; three from vehicle brands, and four from heavy vehicle brands were collected by bulk sampling approaches from the market and field. Dust fibres were extracted using slow grinding method and analysed under Polarized Light Microscope (PLM). The fibre characteristics such as colour, morphology, pleochroism, extinction, and dispersion staining technique were examined, referring the National Institute for Occupational Safety and Health (NIOSH) Manual of Analytical Methods (NMAM) 9002. Additionally, the observed samples also were verified by an accredited lab to support the authenticity of the outcome. From the analysis and lab results, chrysotile fibres were consistently detected in all brake pad samples, fulfilling the fibre characteristics and positive elongation signs.

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Published

2023-04-19

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Section

Science and Engineering

How to Cite

IDENTIFICATION OF CHRYSOTILE IN BRAKE PADS AND LININGS FROM MALAYSIAN VEHICLES AND HEAVY VEHICLES BY USING POLARIZED LIGHT MICROSCOPE (PLM). (2023). Jurnal Teknologi (Sciences & Engineering), 85(3), 125-134. https://doi.org/10.11113/jurnalteknologi.v85.19440