Asbestos Characterization Using Scanning Electron Microscopy/Light Element X-Ray Spectrometry PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Asbestos Characterization Using Scanning Electron Microscopy/Light Element X-Ray Spectrometry PDF full book. Access full book title Asbestos Characterization Using Scanning Electron Microscopy/Light Element X-Ray Spectrometry by . Download full books in PDF and EPUB format.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 23
Get Book Here
Book Description
The Defence Research Establishment Atlantic(DREA) has traditionally used scanning electron microscopy (SEM) coupled with energy dispersive x-ray (EDX) spectrometry to identify asbestos fibers in solid insulating materials. This analysis typically utilizes fiber morphology to determine the presence of asbestiform fibers and EDX analysis to characterize asbestos type. The characterization is accomplished by comparison of the relative amounts of magnesium, silicon and iron present in the fibers. The EDX detector traditionally used in asbestos characterization employs a protective beryllium shield that effectively blocks the passage of low energy x-rays. Thus characteristic x-rays from 'light elements' (those below sodium in atomic weight) are not detected. Recently, DREA acquired a commercial EDX detector that employs a polymer shield that allows for detection of x-rays from elements as low as boron in atomic weight. This report summarizes results of a study on the effects of using a light element detector on characterization of both asbestos standards and commercial asbestos-containing insulating material. The study showed that 'light element' SEM/EDX can be used to characterize asbestos fibers in bulk insulations. Asbestos, Energy Dispersive X-ray, Scanning Electron Microscopy, Chrysotile, Amosite, Anthophyllite, Crocidolite.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 23
Get Book Here
Book Description
The Defence Research Establishment Atlantic(DREA) has traditionally used scanning electron microscopy (SEM) coupled with energy dispersive x-ray (EDX) spectrometry to identify asbestos fibers in solid insulating materials. This analysis typically utilizes fiber morphology to determine the presence of asbestiform fibers and EDX analysis to characterize asbestos type. The characterization is accomplished by comparison of the relative amounts of magnesium, silicon and iron present in the fibers. The EDX detector traditionally used in asbestos characterization employs a protective beryllium shield that effectively blocks the passage of low energy x-rays. Thus characteristic x-rays from 'light elements' (those below sodium in atomic weight) are not detected. Recently, DREA acquired a commercial EDX detector that employs a polymer shield that allows for detection of x-rays from elements as low as boron in atomic weight. This report summarizes results of a study on the effects of using a light element detector on characterization of both asbestos standards and commercial asbestos-containing insulating material. The study showed that 'light element' SEM/EDX can be used to characterize asbestos fibers in bulk insulations. Asbestos, Energy Dispersive X-ray, Scanning Electron Microscopy, Chrysotile, Amosite, Anthophyllite, Crocidolite.
Author: G. C. Fisher
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
The positive identification of asbestos in industrial products frequently requires the application of more than one method of analysis. Phase contrast optical microscopy, a standard method of asbestos analysis, is often inadequate, particularly if interfacing fibres are present. Characterization and determination of asbestos is facilitated by the complementary application of X-ray diffractometry and scanning electron microscopy coupled with energy-dispersive X-ray spectrometry (SEMEDS). Identification of asbestos type and semi-quantitative estimation of content is often possible in bulk specimens by X-ray diffractometry. In the event of ambiguous results, definitive qualitative identification may be achieved by SEMEDS analysis based on the determination of characteristic ratios of constituent elements, including magnesium, silicon, iron, sodium and calcium, relative to standard asbestos fibres. Details of analytical procedures are described. (Author).
Author: Canada. Department of National Defence. Research and Development Branch
Publisher: Defence Research Establishment Pacific
ISBN:
Category :
Languages : en
Pages : 16
Get Book Here
Book Description
The positive identification of asbestos in industrial products frequently requires the application of more than one method of analysis. Phase contrast optical microscopy, a standard method of asbestos analysis, is often inadequate, particularly if interfacing fibres are present. Characterization and determination of asbestos is facilitated by the complementary application of X-ray diffractometry and scanning electron microscopy coupled with energy-dispersive X-ray spectrometry (SEMEDS). Identification of asbestos type and semi-quantitative estimation of content is often possible in bulk specimens by X-ray diffractometry. In the event of ambiguous results, definitive qualitative identification may be achieved by SEMEDS analysis based on the determination of characteristic ratios of constituent elements, including magnesium, silicon, iron, sodium and calcium, relative to standard asbestos fibres. Details of analytical procedures are described. (Author).
Author: G. J. Burdett
Publisher:
ISBN:
Category : Laboratories
Languages : en
Pages :
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 804
Get Book Here
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Kenneth Martin Earle
Publisher:
ISBN:
Category : Electron probe microanalysis
Languages : en
Pages : 128
Get Book Here
Book Description
Author: John Scott Flickinger
Publisher:
ISBN:
Category : Asbestos
Languages : en
Pages : 240
Get Book Here
Book Description
Author: Shirley Turner
Publisher:
ISBN:
Category : Asbestos fibers
Languages : en
Pages : 84
Get Book Here
Book Description
Author: Pramod Kulkarni
Publisher: John Wiley & Sons
ISBN: 1118001672
Category : Science
Languages : en
Pages : 1497
Get Book Here
Book Description
Aerosol Measurement: Principles, Techniques, and Applications Third Edition is the most detailed treatment available of the latest aerosol measurement methods. Drawing on the know-how of numerous expert contributors; it provides a solid grasp of measurement fundamentals and practices a wide variety of aerosol applications. This new edition is updated to address new and developing applications of aerosol measurement, including applications in environmental health, atmospheric science, climate change, air pollution, public health, nanotechnology, particle and powder technology, pharmaceutical research and development, clean room technology (integrated circuit manufacture), and nuclear waste management.
