Format

Send to

Choose Destination
Bull Environ Contam Toxicol. 2011 Nov;87(5):531-8. doi: 10.1007/s00128-011-0375-z. Epub 2011 Jul 30.

Exposure assessment to dust and free silica for workers of Sangan iron ore mine in Khaf, Iran.

Author information

1
Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Qods Street, Tehran, Iran. al.naghizadeh@yahoo.com

Abstract

We aimed to conduct an exposure assessment to dust and free silica for workers of Sangan iron ore mine in Khaf, Iran. The maximum concentrations of total dust and free silica were measured in crusher machine station at 801 ± 155 and 26 ± 7 mg/m(3), respectively. Meanwhile, the minimum concentrations were measured in official and safeguarding station at 8.3 ± 2 and 0.012 ± 0.002 mg/m(3), respectively. Also, the maximum concentrations of respirable dust and free silica were measured in Tappeh Ghermez drilling no. 1 at 66 ± 13 and 1.5 ± 0.4 mg/m(3), respectively, while the minimum concentrations were measured in pneumatic hammer at 5.26 ± 3 and 0.01 ± 0.005 mg/m(3), respectively. Considerate to Iranian standard for respirable dust concentrations (0.11 mg/m(3)) and international standards (ACGIH = 0.1 and NIOSH = 0.05 mg/m(3)), it was found that dust and free silica amounts were much higher than national and international standard levels in this mine.

PMID:
21805121
DOI:
10.1007/s00128-011-0375-z
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Springer
Loading ...
Support Center