Risk assessment of workers exposed to crystalline silica aerosols

Mohammad Rokni, Mahmoud Mohammadyan*, Seyyed Taghi Hashemi, Seyyed Mohammad Asadi, Peter J. Boogaard, Behzad Heibati, Kaan Yetilmezsoy, Sabah Ahmed Abdul-Wahab

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


This study was conducted to determine the concentration of airborne respirable crystalline silica (ARCS) particles and to evaluate its risk level among workers employed in eight different workplaces in Iran. They included sandblasting operations, ceramic production, sand and gravel work, brick production, asphalt manufacturing, foundry operation, glass making, and stone cutting. Personal exposure to ARCS was measured in randomly selected samples from each workplace. The maximum and minimum average of ARCS concentration in the eight workplaces were observed in foundry operation (0.338 ± 0.110 mg/m3) and glass manufacturing (0.125 ± 0.093 mg/m3), respectively. The average concentration of ARCS in all assessed working conditions were higher than the permitted limit of occupational contact recommended by Technical Committee of the Iranian Ministry of Health, treatment and medical education (0.025 mg/m3). Overall, the results showed a serious lack of control in Iranian industries with respect to workers' exposures to ARCS.

Original languageEnglish
Pages (from-to)1678-1686
Number of pages9
JournalHuman and Ecological Risk Assessment
Issue number8
Publication statusPublished - Nov 16 2016


  • crystalline silica
  • exposure rate
  • respirable particles
  • risk assessment
  • workers' exposure

ASJC Scopus subject areas

  • Ecological Modelling
  • Pollution
  • Health, Toxicology and Mutagenesis


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