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Inhalation risk and particle size in dust and mist

Journal Article:

Abstract

This paper presents a critical overview of particle uptake and retention from literature through 1949. Particles > 6-..mu..m are retained in nose, or by secondary bronchi with mouth breathing. Few > 2-..mu..m particles are exhaled, trapped mostly in bronchioles (some by alveoli) by sedimentation. Maximal deposition is 0.4- to 0.8-..mu..m size in bronchioles and alveoli. Minimim retention is at 0.1 to 0.15 ..mu..m; approx. 80% are exhaled. Brownian settling of smaller particles in alveoli occurs. Particles of low density penetrate farther. Slow breathing enhances retention. Soluble toxins may be absorbed at any point along respiratory tract, so deep penetration percentage is moot in most cases.
Authors:
Publication Date:
Jan 01, 1949
Product Type:
Journal Article
Reference Number:
EDB-79-101512
Resource Relation:
Journal Name: Br. J. Ind. Med.; (United Kingdom); Journal Volume: 6
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; AEROSOLS; HAZARDS; DUSTS; BROWNIAN MOVEMENT; DEPOSITION; INHALATION; LUNGS; PARTICLE SIZE; RESPIRATORY SYSTEM; RETENTION; RISK ASSESSMENT; TOXINS; ANTIGENS; BODY; COLLOIDS; DISPERSIONS; INTAKE; ORGANS; SIZE; SOLS; TOXIC MATERIALS; 560300* - Chemicals Metabolism & Toxicology
OSTI ID:
6381217
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: BJIMA
Submitting Site:
TIC
Size:
Pages: 245-253
Announcement Date:
Sep 01, 1979

Journal Article:

Citation Formats

Davies, C N. Inhalation risk and particle size in dust and mist. United Kingdom: N. p., 1949. Web.
Davies, C N. Inhalation risk and particle size in dust and mist. United Kingdom.
Davies, C N. 1949. "Inhalation risk and particle size in dust and mist." United Kingdom.
@misc{etde_6381217,
title = {Inhalation risk and particle size in dust and mist}
author = {Davies, C N}
abstractNote = {This paper presents a critical overview of particle uptake and retention from literature through 1949. Particles > 6-..mu..m are retained in nose, or by secondary bronchi with mouth breathing. Few > 2-..mu..m particles are exhaled, trapped mostly in bronchioles (some by alveoli) by sedimentation. Maximal deposition is 0.4- to 0.8-..mu..m size in bronchioles and alveoli. Minimim retention is at 0.1 to 0.15 ..mu..m; approx. 80% are exhaled. Brownian settling of smaller particles in alveoli occurs. Particles of low density penetrate farther. Slow breathing enhances retention. Soluble toxins may be absorbed at any point along respiratory tract, so deep penetration percentage is moot in most cases.}
journal = {Br. J. Ind. Med.; (United Kingdom)}
volume = {6}
journal type = {AC}
place = {United Kingdom}
year = {1949}
month = {Jan}
}