Estimating Respirable Dust Exposure from Inhalable Dust Exposure.
aerosols
conversion functions
inhalable dust
occupational dust exposure
regression analysis
respirable dust
retrospective exposure assessment
workplace assessment
Journal
Annals of work exposures and health
ISSN: 2398-7316
Titre abrégé: Ann Work Expo Health
Pays: England
ID NLM: 101698454
Informations de publication
Date de publication:
30 04 2020
30 04 2020
Historique:
received:
18
01
2019
revised:
24
10
2019
accepted:
03
02
2020
pubmed:
1
3
2020
medline:
12
1
2021
entrez:
1
3
2020
Statut:
ppublish
Résumé
In the sector of occupational safety and health only a limited amount of studies are concerned with the conversion of inhalable to respirable dust. This conversion is of high importance for retrospective evaluations of exposure levels or of occupational diseases. For this reason a possibility to convert inhalable into respirable dust is discussed in this study. To determine conversion functions from inhalable to respirable dust fractions, 15 120 parallel measurements in the exposure database MEGA (maintained at the Institute for Occupational Safety and Health of the German Social Accident Insurance) are investigated by regression analysis. For this purpose, the whole data set is split into the influencing factors working activity and material. Inhalable dust is the most important predictor variable and shows an adjusted coefficient of determination of 0.585 (R2 adjusted to sample size). Further improvement of the model is gained, when the data set is split into six working activities and three material groups (e.g. high temperature processing, adj. R2 = 0.668). The combination of these two variables leads to a group of data concerned with high temperature processing with metal, which gives rise to a better description than the whole data set (adj. R2 = 0.706). Although it is not possible to refine these groups further systematically, seven improved groups are formed by trial and error, with adj. R2 between 0.733 and 0.835: soldering, casting (metalworking), welding, high temperature cutting, blasting, chiseling/embossing, and wire drawing. The conversion functions for the seven groups are appropriate candidates for data reconstruction and retrospective exposure assessment. However, this is restricted to a careful analysis of the working conditions. All conversion functions are power functions with exponents between 0.454 and 0.946. Thus, the present data do not support the assumption that respirable and inhalable dust are linearly correlated in general.
Identifiants
pubmed: 32112076
pii: 5766415
doi: 10.1093/annweh/wxaa016
pmc: PMC7191886
doi:
Substances chimiques
Air Pollutants, Occupational
0
Dust
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
430-444Informations de copyright
© The Author(s) 2020. Published by Oxford University Press on behalf of the British Occupational Hygiene Society.
Références
J Occup Environ Hyg. 2009 Jan;6(1):9-18
pubmed: 18982534
J Occup Environ Hyg. 2016 Oct;13(10):725-40
pubmed: 27078031
Occup Environ Med. 1995 Dec;52(12):793-9
pubmed: 8563841
Int Arch Occup Environ Health. 2008 Aug;81(8):949-58
pubmed: 18071741
Environ Sci Technol. 2005 Nov 1;39(21):8497-504
pubmed: 16294893
Ann Occup Hyg. 1997 Dec;41(6):609-24
pubmed: 9375522
J Occup Environ Hyg. 2008 Jan;5(1):28-35
pubmed: 18041642
Ann Occup Hyg. 1995 Dec;39(6):795-800
pubmed: 8588714
Ann Occup Hyg. 2016 May;60(4):453-66
pubmed: 26755796
Ann Occup Hyg. 1984;28(2):163-72
pubmed: 6476684
Ann Occup Hyg. 2012 Jul;56(5):557-67
pubmed: 22539559
J Occup Environ Hyg. 2008 Jul;5(7):444-54
pubmed: 18464098
Langmuir. 2015 Feb 3;31(4):1320-7
pubmed: 25560979
Analyst. 1996 Sep;121(9):1207-14
pubmed: 8831279