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A QUANTITATIVE METHOD USING A LIGHT MICROSCOPE ON-LINE TO A MACINTOSH COMPUTER FOR THE ANALYSIS OF TREMOLITE FIBRES IN DOLOMITE.

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Title: A QUANTITATIVE METHOD USING A LIGHT MICROSCOPE ON-LINE TO A MACINTOSH COMPUTER FOR THE ANALYSIS OF TREMOLITE FIBRES IN DOLOMITE.
Authors: Lundgren, Lennart1, Lundström, Sten2, Sundström, Gunnel1, Bergman, Gunnel1, Krantz, Staffan1
Source: Annals of Occupational Hygiene. 1996, Vol. 40 Issue 2, p197-209. 13p.
Subjects: Quantitative research, Macintosh (Computer), Tremolite, Dolomite, Microscopes
Abstract: A modern method for quantitative determination of tremolite fibres in dolomite has been developed which uses light polarizing microscopy with phase-contrast equipment and evaluation on-line to a Macintosh computer. The principle is mass calculation based on fibre dimensions measured in the micro with the help of a programmable multimedia program. The sample is leached in acid, gently crushed and sieved before a small portion is deposited on a cellulose nitrate membrane filter The filter is made transparent with cinnamaldehyde on a microscope slide. The tremolite fibres will be coloured blue with a red to yellow halo when viewed under phase-contrast and thus easy to identify. An ordinary Macintosh computer with special video display cards and software, which enables the microscopist to perform on-line measurements of the fibre dimensions on a display with the help of a mouse, is used. The method does not differentiate between asbestiform and non-asbestiform tremolite. All particles/fibres of tremolite with an aspect ratio of ≥5:1 are measured. The method is very easy to use and the microscope as well as the computer hardware and software are not unusual. Copyright © 1996 British Occupational Hygiene Society. Published by Elsevier Science Ltd. [ABSTRACT FROM AUTHOR]
Copyright of Annals of Occupational Hygiene is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: A modern method for quantitative determination of tremolite fibres in dolomite has been developed which uses light polarizing microscopy with phase-contrast equipment and evaluation on-line to a Macintosh computer. The principle is mass calculation based on fibre dimensions measured in the micro with the help of a programmable multimedia program. The sample is leached in acid, gently crushed and sieved before a small portion is deposited on a cellulose nitrate membrane filter The filter is made transparent with cinnamaldehyde on a microscope slide. The tremolite fibres will be coloured blue with a red to yellow halo when viewed under phase-contrast and thus easy to identify. An ordinary Macintosh computer with special video display cards and software, which enables the microscopist to perform on-line measurements of the fibre dimensions on a display with the help of a mouse, is used. The method does not differentiate between asbestiform and non-asbestiform tremolite. All particles/fibres of tremolite with an aspect ratio of ≥5:1 are measured. The method is very easy to use and the microscope as well as the computer hardware and software are not unusual. Copyright © 1996 British Occupational Hygiene Society. Published by Elsevier Science Ltd. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Annals of Occupational Hygiene is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1093/annhyg/40.2.197
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        Text: English
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        Type: general
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      – SubjectFull: Tremolite
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      – SubjectFull: Dolomite
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      – TitleFull: A QUANTITATIVE METHOD USING A LIGHT MICROSCOPE ON-LINE TO A MACINTOSH COMPUTER FOR THE ANALYSIS OF TREMOLITE FIBRES IN DOLOMITE.
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              Text: 1996
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