Particle size distributions and health-related exposures of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) of sinter plant workers

Tung Sheng Shih, Minliang Shih, Wen Jhy Lee, Sheng Lung Huang, Lin Chi Wang, Yu Cheng Chen, Perng Jy Tsai

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21 Citations (Scopus)

Abstract

This study measured particle size distributions of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in two workplace atmospheres of the sintering grate and rough roll shredder in a sintering plant, and to assess their workers' health-related exposures. We found that the PCDD/F concentration of the sintering grate (site A = 14.47 pg m-3) was lower than that of the rough roll shredder (site B = 17.20 pg m-3). Particle size distributions of PCDD/Fs were in the form of the unimodal with the mass median aerodynamic diameter (MMAD) of 4.74 μm and 5.23 μm, and geometric standard deviation (σg) of 3.15 and 2.15 for the site A and B, respectively. The above results suggest that the workplace of the site A had a less fraction of coarse particles than that of the site B. The estimated PCDD/F concentrations of the inhalable fraction (11.0 pg m-3) and thoracic fraction (8.89 pg m-3) of the site A were lower than those of the site B (12.4 and 9.39 pg m-3, respectively). But to the contrary the estimated respirable fraction of the site A (5.05 pg m-3) was slightly higher than that of the site B (4.93 pg m-3). Our results clearly indicate the importance to conduct particle size segregating samplings for assessing human PCDD/F exposures.

Original languageEnglish
Pages (from-to)1463-1470
Number of pages8
JournalChemosphere
Volume74
Issue number11
DOIs
Publication statusPublished - 2009 Mar

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Chemistry(all)
  • Environmental Chemistry
  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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