Author: Publisher:
ISBN:
Category : Mine dusts
Languages : en
Pages : 24
Book Description
MSHA's Procedure for Determining Quartz Content of Respirable Coal Mine Dust
Author: Bureau of Mines Procedure for Evaluating Quartz Content of Respirable Coal Mine Dust
Author: Samuel A. GoldbergPublisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 20
Book Description
Research Toward Direct Analysis of Quartz Dust on Filters Using FTIR Spectroscopy
Author: Donald P. TuchmanPublisher:
ISBN:
Category : Air filters
Languages : en
Pages : 24
Book Description
The U.S. Bureau of Mimes is investigating Fourier transform infrared (FTIR) spectroscopy for on- filter quartz analysis of respirable dust. A custom accessory is described for full-face examination of filters utilizing a large-diameter infrared (IR) beam. The accessory positions samples to match diameters with that of the diverging analytical beam. Sample absorbance is then measured. With nonuniform deposition of dust on collection filters being a major issue for such analyses, this approach is the most direct way to accomplish sample area averaging. The approach is unconventional since it utilizes large-beam geometries instead of the usually desired minimized beam dimensions. The issues and problems involved in the analysis of quartz on a filter matrix are discussed. Absorption bands chosen, light-scattering effects, curved baselines, random noise, interference fringes, and possible solutions to technical difficulties are the topics covered. The more significant findings include a 20-pg detection limit for quartz when the custom accessory is used and minimal occurrence of light-scattering effects at low wavenumbers. The custom accessory performance was satisfactory and merits further work. With continued research, an on-filter method for quartz analysis of respirable dusts seems achievable
Catalog of Training Products for the Mining Industry
Author: National Mine Health and Safety AcademyPublisher:
ISBN:
Category : Government publications
Languages : en
Pages : 104
Book Description
Sources and Characteristics of Quartz Dust in Coal Mines
Author: John A. OrganiscakPublisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 32
Book Description
Proceedings of the VIIth International Pneumoconioses Conference, Pittsburgh, Pennsylvania, USA, August 23-26, 1988
Author: Information Circular
Author: Publisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 790
Book Description
User's Guide for Inslope3
Author: James P. MayPublisher:
ISBN:
Category : Inslope3
Languages : en
Pages : 614
Book Description
Proceedings of the Symposium on Control of Respirable Coal Mine Dust, Beckley, West Virginia, October 4-6, 1983
Author: Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 336
Book Description
Catalog of Training Products for the Mining Industry
Author: National Mine Health and Safety AcademyPublisher:
ISBN:
Category : Government publications
Languages : en
Pages : 104
Book Description
