Workplace Measurements of Ultrafine Particles-A Literature Review

Workers are exposed to ultrafine particles (UFP) in a number of occupations. In
order to summarize the current knowledge regarding occupational exposure to UFP
(excluding engineered nanoparticles), the authors gathered information on UFP
concentrations from published research articles. The aim of this study was to
create a basis for future epidemiological studies that treat UFP as an exposure

The literature search found 72 publications regarding UFP measurements in work
environments. These articles covered 314 measurement results and tabled
concentrations. Mean concentrations were compared to typical urban UFP
concentration level, which was considered non-occupational background
concentration. Mean concentrations higher than the typical urban UFP
concentration were reported in 240 workplace measurements.

The results showed that workers' exposure to UFP may be significantly higher
than their non-occupational exposure to background concentration alone. Mean
concentrations of over 100 times the typical urban UFP concentration were
reported in welding and metal industry. However, according to the results of
the review, measurements of the UFP in work environments are, to date, too
limited and reported too heterogeneous to allow us to draw general conclusions
about workers' exposure. Harmonization of measurement strategies is essential
if we are to generate more reliable and comparable data in the future.

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AplusA-online.de - Source: Annals of Work Exposures and Health