EN 481:1993
工作场所空气.用于测量飘浮在空气中微粒的粒度确定

Workplace atmospheres; size fraction definitions for measurement of airborne particles

标准号

EN 481:1993

发布

1993年

发布单位

欧洲标准化委员会

当前最新

EN 481:1993

 

 

适用范围

This standard defines sampling conventions forparticle size fractions which are to be used inassessingThe possible health effects resulting frominhalation of airborne particles inThe workplaceThey are derived from experimental data forhealthy adults. Conventions are defined forTheinhalable, thoracic and respirable fractions;extrathoracic and tracheobronchial conventionsmay be calculated fromThe defined conventions.(The inhalable fraction is sometimes calledinspirable一the terms are equivalent.Thenomenclature of the fractions is discussed inannex A.) Assumptions are given in clause 4.Theconvention chosen will depend onThe region ofeffect of the component of interest inThe airborneparticles (see clause 3). Conventions are stated interms of mass fractions, butThey may also be usedwhenThe intention is to evaluateThe total surfacearea orThe number of particles inThe collectedmaterial.

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