State of knowledge on the occupational exposure to carbon nanotubes.

Détails

ID Serval
serval:BIB_D719E7D77F11
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
State of knowledge on the occupational exposure to carbon nanotubes.
Périodique
International journal of hygiene and environmental health
Auteur⸱e⸱s
Guseva Canu I., Batsungnoen K., Maynard A., Hopf N.B.
ISSN
1618-131X (Electronic)
ISSN-L
1438-4639
Statut éditorial
Publié
Date de publication
04/2020
Peer-reviewed
Oui
Volume
225
Pages
113472
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
Carbon nanotubes (CNT) trigger fascination as well as anxiety, given their unique physical and chemical properties, and continuing concerns around their possible health effects. CNT exposure assessment is an integral component of occupational and environmental epidemiology, risk assessment, and management. We conducted a systematic review to analyze the quality of CNT occupational exposure assessments in field studies and to assess the relevance of available quantitative data from occupational hygiene and epidemiological perspectives. PubMed and Scopus databases were searched for the period 2000-2018. To grade the quality of each study, we used a standardized grid of seven criteria. The first criterion addressed 12 items deemed most relevant CNT physical-chemical properties with respect to their in vitro and in vivo toxicity. We included 27 studies from 11 countries in the review and graded them high (n = 2), moderate (n = 15) and low quality (n = 10). Half of the studies measured elemental carbon mass concentration (EC) using different methods and aerosol fractions. In 85% of studies, the observed values exceed the US National Institute for Occupational Safety and Health Recommended Exposure Limit. The quantification of CNT agglomerates and/or CNT contained fibers becomes increasingly common although lacking methodological standardization. Work activities with the greatest mean CNT mass concentrations were non-enclosed and included sieving, harvesting, packaging, reactor cleaning, extrusion and pelletizing. Some of the large studies defined standardized job titles according to exposure estimates at corresponding workstations and classified them by decreasing CNT exposure level: technicians > engineers > chemists. The already initiated harmonization of CNT exposure assessment and result reporting need to continue to favor not only studies in the field, but also to identify companies and workers using CNTs to characterize their exposures as well as monitor their health. This will enable an objective and realistic evaluation of risks associated with CNT applications and an appropriate risk management.
Mots-clé
CNT mass concentration, CNT number concentration, Exposure registry, Health surveillance, Nanotechnology, Systematic review
Pubmed
Web of science
Création de la notice
17/02/2020 15:34
Dernière modification de la notice
23/10/2020 5:23
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