SIST ISO 7708:1997
Air quality - Particle size fraction definitions for health-related sampling
Air quality - Particle size fraction definitions for health-related sampling
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 9
- Дата публикации:
- 1 января 1997 г.
- ICS:
- 13.040.01
- Технический комитет:
- KAZ - Air quality
Defines sampling conventions for particle size fractions for use in assessing possible health effects of airborne particles in the workplace and ambient environment. Defines conventions for the inhalable, thoracic and respirable fractions; extrathoracic and tracheobronchial conventions may be calculated from the defined conventions. The conventions should not be used in association with limit values defined in other terms, for example for limit values of fibres defined in terms of their length and diameter.
Abstract
Overview
ISO 7708:1995 - "Air quality - Particle size fraction definitions for health-related sampling" defines internationally accepted sampling conventions for airborne particle size fractions used when assessing health effects in occupational and ambient environments. The standard specifies target collection curves for the inhalable, thoracic and respirable fractions (with extrathoracic and tracheobronchial fractions derived from those conventions). Conventions are expressed in terms of particle aerodynamic diameter and mass fractions and are intended to improve the relationship between measured concentration and potential health risk.
Key topics and technical requirements
- Sampling conventions and definitions: Clear definitions for inhalable, thoracic, tracheobronchial, extrathoracic and respirable fractions and corresponding target specifications for sampling instruments.
- Inhalable convention: Target collection curve averaged over wind directions for typical breathing rates (equation form provided for windspeeds u
Технические детали
- SKU
- SIST ISO 7708:1997
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