| Autor: |
Birgitta Westling, Lennart Lundgren, Ildiko Laszlo, Sten Lundström |
| Rok vydání: |
1995 |
| Předmět: |
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| Zdroj: |
The Annals of Occupational Hygiene. 39:455-467 |
| ISSN: |
0003-4878 |
| DOI: |
10.1016/0003-4878(95)00020-f |
| Popis: |
A modern technique for counting airborne fibres on membrane filter is described. The evaluation is done on-line to a Macintosh computer from a phase-contrast microscope. The Macintosh computer has special video display cards and software, which enable the microscopist to perform on-line determination of fibres on the display. Each fibre is marked by the microscopist with a mouse and data are saved in the program. The void counting technique (empty fields are counted instead) can also be used. The number of all fibres in a field or void fields, the total number of all fibres or void fields, the number of fields and comments on each field are saved. It is also possible to measure the length and the width of fibres while counting. All this is done in an easy programmable multimedia application program. The technique is suitable for asbestos fibres as well as all other kinds of synthetic fibres. The method is very easy to use and the microscope as well as the computer hardware and software are common and inexpensive. Data for several types of fibre have shown good agreement between counts by the conventional and new technique. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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