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Characteristics of Aerosols Containing Chromium and Nickel From Some Thermal Spraying Operations

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Author

Summary, in English

Characterization of aerosols, emitted from five methods of thermal spraying with materials containing chromium and nickel were carried out. The characterization procedure includes the determinations of the metal content, the particle size distribution, the oxidation state of chromium and a measure of the solubility of chromium. Three different kinds of samplers and the analytical methods PIXE (Particle Induced X-ray Emission analysis), ESCA (Electron Spectroscopy for Chemical Analysis), AAS (Atomic Absorption Spectrophotometry), spectrophotometry with DPC-reagent (sym-diphenylcarbazide), and TEM (‘Transmission Electron Microscopy) were used. The relative concentrations of the major elements in the aerosols agree with the relative abundances in the spraying material. A considerable part of the aerosol mass was found in the respirable fraction. Mass median aerodynamic diameters in the respirable fractions were below 0.5 µm. Hexavalent chromium, which is the oxidation state of chromium with the highest health hazard potential, was determined. Less soluble hexavalent chromium was detected in some of the spraying methods.

Publishing year

1983

Language

English

Document type

Report

Publisher

Department of Nuclear Physics, Lund Institute of Technology

Topic

  • Environmental Health and Occupational Health

Keywords

  • aerosols
  • chromium
  • nickel
  • thermal spraying

Status

Published

Report number

LUTFD2/(TFKF3042)/1-20/(1983)