Academic Journal
Comparison of respirable dust concentrations between gravimetric weighing and real-time dust monitoring equipment in non-mining industries.
| Τίτλος: | Comparison of respirable dust concentrations between gravimetric weighing and real-time dust monitoring equipment in non-mining industries. |
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| Συγγραφείς: | Shai MJ; Occupational Hygiene Section, National Institute for Occupational Health, A Division of the National Health Laboratory Service, 25 Hospital street, Constitution Hill, Johannesburg 2000, South Africa., Sebola LP; Occupational Hygiene Section, National Institute for Occupational Health, A Division of the National Health Laboratory Service, 25 Hospital street, Constitution Hill, Johannesburg 2000, South Africa., Ramatsoma H; Epidemiology and Surveillance Section, National Institute for Occupational Health, A Division of the National Health Laboratory Service, 25 Hospital street, Constitution Hill, Johannesburg 2000, South Africa., Du Preez KL; Occupational Hygiene Section, National Institute for Occupational Health, A Division of the National Health Laboratory Service, 25 Hospital street, Constitution Hill, Johannesburg 2000, South Africa., Manganyi J; Occupational Hygiene Section, National Institute for Occupational Health, A Division of the National Health Laboratory Service, 25 Hospital street, Constitution Hill, Johannesburg 2000, South Africa.; School of Public Health, Faculty of Health Sciences, University of Witwatersrand, 27 st Andrews Road, Parktown, Johannesburg 2193, South Africa., Young MM; Occupational Hygiene Section, National Institute for Occupational Health, A Division of the National Health Laboratory Service, 25 Hospital street, Constitution Hill, Johannesburg 2000, South Africa. |
| Πηγή: | Annals of work exposures and health [Ann Work Expo Health] 2026 Oct 05; Vol. 70 (8). |
| Τύπος έκδοσης: | Journal Article; Comparative Study |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: Oxford University Press Country of Publication: England NLM ID: 101698454 Publication Model: Print Cited Medium: Internet ISSN: 2398-7316 (Electronic) Linking ISSN: 23987308 NLM ISO Abbreviation: Ann Work Expo Health Subsets: MEDLINE |
| Imprint Name(s): | Original Publication: [Oxford] : Oxford University Press, [2017]- |
| Ιατρικοί όροι (MeSH): | Dust*/analysis , Environmental Monitoring*/methods , Environmental Monitoring*/instrumentation , Air Pollutants, Occupational*/analysis , Occupational Exposure*/analysis , Inhalation Exposure*/analysis, South Africa ; Humans ; Working Conditions ; Industry |
| Περίληψη: | Background: Gravimetric weighing remains the gold standard for mass concentration assessments; however, real-time (RT) instruments offer advantages such as immediate feedback and temporal resolution. This study evaluated the comparability of Nanozen DustCount 9000 RT measurements with its gravimetric weighing in non-mining industrial environments. Method: Task-based stationary sampling was conducted at 11 sites in the Gauteng Province, South Africa, producing 20 paired gravimetric and RT measurements. RT outputs were analyzed as raw (RT) and density-adjusted (adjusted-RT) values. Comparability was assessed using Wilcoxon signed-rank tests, Bland-Altman analysis, and regression of proportional bias. Results: No significant differences were observed between gravimetric and RT (P = 0.067) or gravimetric and adjusted-RT (P = 0.277). Bias increased with higher concentrations, but measurements below 1 mg/m3 showed no significant proportional bias (gravimetric versus RT: R2 = 0.06, P = 0.34; gravimetric versus adjusted-RT: R2 = 0.02, P = 0.59). Conclusion: The RT measurements demonstrated close correspondence with gravimetric results obtained from the Nanozen DustCount 9000 built-in filter cassette, particularly at concentrations below 1 mg/m3, suggesting this threshold as a cutoff point for reliable agreement. (© The Author(s) 2026. Published by Oxford University Press on behalf of the British Occupational Hygiene Society. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.) |
| Competing Interests: | Conflicts of interest: The authors declare no conflict of interest relating to the material presented in this article. Its contents, including any opinions and/or conclusions expressed, are solely those of the authors. |
| Grant Information: | Department of Employment and Labour of South Africa |
| Contributed Indexing: | Keywords: Nanozen DustCount® 9000; airborne respirable particulate matter; occupational exposure; photometer |
| Substance Nomenclature: | 0 (Dust) 0 (Air Pollutants, Occupational) |
| Entry Date(s): | Date Created: 20261012 Date Completed: 20261012 Latest Revision: 20261012 |
| Update Code: | 20261012 |
| DOI: | 10.1093/annweh/wxag086 |
| PMID: | 42861645 |
| Βάση Δεδομένων: | MEDLINE |
| ISSN: | 2398-7316 |
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| DOI: | 10.1093/annweh/wxag086 |