Inhalable fraction

Convention values for respirable fraction, thoracic fraction and respirable fraction as a function of the aerodynamic diameter according to DIN EN 481

As inhalable fraction ( inhalable fraction ) is, among others, in the standards EN 481, ISO 7708, EN ISO 10882-1 and EN 14031 the mass fraction of particulate matter referred or airborne particles, which is inhaled through the mouth and nose. It is a variable for assessing possible health hazards at the workplace and depends, among other things, on the speed and direction of air movement and the speed of inhalation. By convention, standard EN 481 stipulates that sampling of the inhalable fraction of the relationship

{\ displaystyle E_ {1} = 50 \ cdot (1 + exp (-0.06D))}

where E _{1 is} the percentage of suspended solids with aerodynamic diameter D (expressed in micrometers) that are to be collected.

To determine the thoracic and respirable fraction knowledge of the respirable fraction is necessary.

With reference to the DIN EN 481 standard, the inhalable fraction is referred to as " E-dust " or "inhalable dust fraction" in various technical rules for hazardous substances ( TRGS ) . The term "E-dust" is also used - together with the term "E-dust fraction" - in the DIN 33897 Part 1 standard as a synonym for "inhalable fraction".

literature

DIN EN 481: 1993-09 Workplace atmosphere - Definition of the particle size distribution for the measurement of airborne particles (German version EN 481: 1993). Beuth Verlag, Berlin.

Individual evidence

↑ DIN ISO 7708: 1996-01 Air quality - Determination of particle size distributions for health-related particulate matter sampling (ISO 7708: 1995). Beuth Verlag, Berlin, p. 3.
↑ DIN EN ISO 10882 Part 1: 2001-04 Occupational health and safety during welding and allied processes - Sampling of particulate substances and gases in the breathing zone of the welder - Part 1: Sampling of particulate substances (ISO 10882-1: 2011). Beuth Verlag, Berlin, p. 8.
↑ DIN EN 14031: 2012-01 Workplace atmosphere - Determination of airborne endotoxins; German version EN 14031: 2003. Beuth Verlag, Berlin, p. 5.
↑ TRGS 900 edition: January 2006, BArBl Heft 1/2006 p. 41–55, last changed and supplemented: GMBl 2015 p. 139–140 of March 2, 2015 [No. 7]
↑ ^a ^b TRGS 559 edition: February 2010, Mineralischer Staub (GMBl No. 22/23 of April 9, 2010, p. 459, last amended GMBl No. 29 of September 1, 2011, p. 578)
↑ DIN 33897-1: 2007-06 Workplace atmosphere - Routine method for determining the dustiness of bulk goods - Part 1: Basics. Beuth Verlag, Berlin, p. 6.

[1] DIN ISO 7708: 1996-01 Air quality - Determination of particle size distributions for health-related particulate matter sampling (ISO 7708: 1995). Beuth Verlag, Berlin, p. 3.

[2] DIN EN ISO 10882 Part 1: 2001-04 Occupational health and safety during welding and allied processes - Sampling of particulate substances and gases in the breathing zone of the welder - Part 1: Sampling of particulate substances (ISO 10882-1: 2011). Beuth Verlag, Berlin, p. 8.

[3] DIN EN 14031: 2012-01 Workplace atmosphere - Determination of airborne endotoxins; German version EN 14031: 2003. Beuth Verlag, Berlin, p. 5.

[TRGS900-4] TRGS 900 edition: January 2006, BArBl Heft 1/2006 p. 41–55, last changed and supplemented: GMBl 2015 p. 139–140 of March 2, 2015 [No. 7]

[TRGS559-5] TRGS 559 edition: February 2010, Mineralischer Staub (GMBl No. 22/23 of April 9, 2010, p. 459, last amended GMBl No. 29 of September 1, 2011, p. 578)

[6] DIN 33897-1: 2007-06 Workplace atmosphere - Routine method for determining the dustiness of bulk goods - Part 1: Basics. Beuth Verlag, Berlin, p. 6.