Aluminosilicate Surface Contamination of Respirable Quartz Particles from Coal Mine Dusts and from Clay Works Dusts

Details

• Personal Author:
  Attfield MD ; Bolsaitis P ; Graysone RL ; Harrison JC ; Keane MJ ; Kennedy RD ; Wallace WE ; Wearden AQ
• Description:
  Respirable high-silica particles from four coal mines, a clay mine and a tunnelling site were analysed for silicon vs aluminum composition by performing scanning electron microscopy-energy dispersive X-ray analysis (SEM-EDS) at electron accelerating voltages of 20 kiloelectron volts (keY). The same particles were analysed at 5 keY to determine possible differences in surface vs bulk composition. In some cases high-silica particles exhibited a decrease in the ratio of silicon to aluminium K-alpha line intensities with decreasing electron beam accelerating voltage. This behaviour is consistent with aluminosilicate surface contamination or occlusion of a silica particle. Some 20 high-silica particles were analysed from each of 10 samples. Powdered aluminosilicate glass was used as a control for the behaviour of silica with a homogeneous distribution of aluminium in the particle. Significant differences were found between the control and sample means for an Illinois bituminous coal mine dust, two western and one central Pennsylvania bituminous coal mine dust low-temperature ashes, and a clay mine and mill dust sample, but not for an anthracite coal mine dust and two central Pennsylvania bituminous coal mine dust low-temperature ashes. [Description provided by NIOSH]
• Subjects:
  Aluminum Compounds Aluminum Silicates Coal Coal Mining Dust Mining Occupational Health Quartz Radiography Safety Silicon Dioxide Urogenital Diseases Urogenital System

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• Keywords:
  Alpha-particles Aluminum-compounds Coal-miners Coal-mining Miners Mining-industry Quartz-dust Reproductive-hazards Respirable-dust Silica-dusts Silicate-miners Silicates X-ray-analysis

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• ISBN:
  0080408419
• ISSN:
  0003-4878
• Publisher:
  Pergamon
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DRDS - Division of Respiratory Disease Studies
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  439-445
• Volume:
  38
• NIOSHTIC Number:
  nn:20024868
• Citation:
  Ann Occup Hyg, Inhaled Particles VII 1994 Jan; 38(Suppl 1):439-445
• Contact Point Address:
  Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, U.S. Centers for Disease Control, Morgantown, WV 26505 USA
• CAS Registry Number:
  Aluminum (CAS RN 7429-90-5) ; Quartz (SiO2) (CAS RN 14808-60-7)
• Editor(s):
  Dodgson J; McCallum RI
• Federal Fiscal Year:
  1994
• Peer Reviewed:
  True
• Source Full Name:
  Annals of Occupational Hygiene, Inhaled Particles VII
• Supplement:
  1
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:577e620c8b1dbcd1c36ba0e1e80d51dd18ad1fe1d5bb6da7891a7ab45a6255b62b7a1afefd2d58eff7a37a935d7abc867c0b20d15c2df00f49f13fde6622e7b3
• Download URL:
  https://stacks.cdc.gov/view/cdc/196467/cdc_196467_DS1.pdf
• File Type:
  [PDF - 542.02 KB ]