「석면안전관리 역량강화 교육」 행사로 도움센터(1661-4072)운영이 일시 중단됩니다. 질의응답 게시판을 이용하여 주시기 바랍니다.
- 국내 석면분석방법
공기 중 석면분석에 주로 사용되는 장비로는 위상차현미경이다.
하지만, 위상차 현미경은 석면뿐만 아니라 일반 섬유도 함께 확인이 되기 때문에 순수한 석면의 농도를 확인하기 위하여 투과전자현미경을 사용하기도 한다.
위상차 현미경을 이용한 석면과 다른 섬유 분석방법 (US NIOSH Manual of Analytical Methods (NMAM) 7400 (ASBESTOS and OTHER FIBERS by PCM)) |
- 측정범위 : 100 ~ 1300 fibers/mm2 filter area - 검출한계 : 7 fibers/mm2 filter area - 원문 : US NIOSH 홈페이지 [http://www.cdc.gov/niosh] |
TEM을 이용한 석면 분석방법 US NIOSH Manual of Analytical Methods (NMAM) 7402 (ASBESTOS by TEM) |
- US NIOSH Manual of Analytical Methods (NMAM) 7402 (ASBESTOS by TEM) - 측정범위 : 100 to 1300 fibers/mm2 filter area - 검출한계 : 1 confirmed asbestos fiber above 95% of expected mean blank value - 원문 : US NIOSH 홈페이지 [http://www.cdc.gov/niosh] |
* Ambient air -- Determination of asbestos fibres -- Direct transfer transmission electron microscopy method |
- ISO 10312 : 1995 (Ambient air -- Determination of asbestos fibres -- Direct transfer transmission electron microscopy method) - Specifies a reference method using transmission electron microscopy for the determination of the concentration of asbestos structures in ambient atmospheres and includes measurement of the lengths, widths and aspect ratios of the asbestos structures. The method allows determination of the types of asbestos fibres present. The method cannot discriminate between individual fibres of the asbestos and non-asbestos analogues of the same amphibole mineral. - 원문 : ISO 홈페이지 [http://www.iso.org] |
Ambient air -- Determination of numerical concentration of inorganic fibrous particles -- Scanning electron microscopy method |
- ISO 14966 : 2002 (Ambient air -- Determination of numerical concentration of inorganic fibrous particles -- Scanning electron microscopy method) - ISO 14966:2002 specifies a method using scanning electron microscopy for determination of the concentration of inorganic fibrous particles in the air. The method specifies the use of gold-coated, capillary-pore, track-etched membrane filters, through which a known volume of air has been drawn. Using energy-dispersive X-ray analysis, the method can discriminate between fibres with compositions consistent with those of the asbestos varieties (e.g. serpentine and amphibole), gypsum and other inorganic fibres. Annex C provides a summary of fibre types which can be measured. - ISO 14966:2002 is applicable to the measurement of the concentrations of inorganic fibrous particles in ambient air. The method is also applicable for determining the numerical concentrations of inorganic fibrous particles in the interior atmospheres of buildings, for example, to determine the concentration of airborne inorganic fibrous particles remaining after the removal of asbestos-containing products. - The range of concentrations for fibres with lengths greater than 5 micrometres, in the range of widths which can be detected under standard measurement conditions, is approximately 3 fibres to 200 fibres per square millimetre of filter area. The air concentrations, in fibres per cubic metre, represented by these values are a function of the volume of air sampled. - NOTE The ability of the method to detect and classify fibres with widths lower than 0.2 micrometres is limited. If airborne fibres in the atmosphere being sampled are predominantly less than 0.2 micrometres in width, a transmission electron microscopy method such as ISO 10312 can be used to determine the smaller fibres. - 원문 : ISO 홈페이지 [http://www.iso.org] |
Stationary source emissions -- Determination of asbestos plant emissions — Method by fibre count measurement |
- ISO 10397 : 1993 (Stationary source emissions -- Determination of asbestos plant emissions -- Method by fibre count measurement) - The principle of the method specified is isokinetically withdrawing a known volume from a moving gas stream, passing the sampled gas through a filter medium to remove particulate matter (including fibres), treating the filter to make it transparent when viewed under a microscope and counting the number of fibres in a precise number of fields viewed using a phase-contrast optical microscope. The method may be used to determine fibre concentrations in flowing gas streams in ducts, chimneys, or flues from a wide range of industrial processes. - 원문 : ISO 홈페이지 [http://www.iso.org] |
Ambient air -- Determination of asbestos fibres -- Indirect-transfer transmission electron microscopy method |
- ISO 13794 : 1999 (Ambient air -- Determination of asbestos fibres -- Indirect-transfer transmission electron microscopy method) - 원문 : ISO 홈페이지 [http://www.iso.org] |
Indoor air -- Part 7: Sampling strategy for determination of airborne asbestos fibre concentrations |
- ISO 16000-7 : 2007 (Indoor air -- Part 7: Sampling strategy for determination of airborne asbestos fibre concentrations) - ISO 16000-7:2007 specifies procedures to be used in planning of air measurements to determine the concentrations of asbestos in indoor atmospheres. Careful planning of the measurement strategy is important, because the results can become the basis of recommendations for major building renovations, or for the return of a building to normal occupancy status after removal of asbestos-containing materials. - ISO 16000-7:2007 uses the following definition for indoor environments as specified in ISO 16000-1: dwellings having living rooms, bedrooms, do-it-yourself (DIY) rooms, recreation rooms, cellars, kitchens and bathrooms; workrooms or workplaces in buildings which are not subject to health and safety inspections in regard to air pollutants (for example, offices and sales premises); public and commercial buildings (for example, hospitals, schools, kindergartens, sports halls, libraries, restaurants and bars, theatres and other function rooms); cabins of vehicles and public transport. - 원문 : ISO 홈페이지 [http://www.iso.org] |