Biomedical Engineering Reference
In-Depth Information
TABLE 13.3 (
continued
)
Publications on Relatively High Energy Dispersion (Source Domain 3)
Reference
Scenario
Nanomaterial
Characterization
Metric
Summary/Conclusions
Dylla and
Hassan (2012)
Spray coating
(of surfaces)
TiO
2
TEM EDX
PNC + PSD
(2-150 nm)
The actual construction activities for spray-coat application
resulted in higher nanoparticle concentrations compared to the
laboratory-simulated construction activities totalling 2.39 × 10
8
#/cm³ released. The base coat released signiicantly smaller
nanoparticles compared to the top coat. Both nanoparticle
distributions correlated to the corresponding nanoparticle sizes
comprised in each suspension. The nanoparticles collected were
spherical with some agglomerating and none matching the
shape of the photocatalytic nanorods in the top coat suspension.
Nazarenko et al.
(2012)
Brush
application
of cosmetic
powders
Various
TEM EDX
PNC + PSD
(14 nm-20 μm
TEM observations and aerosol measurements suggest that
exposure to nanomaterial(s) due to the use of cosmetic powders
will be predominantly in the form of agglomerates or
nanomaterials attached to larger particles that would deposit in
the upper airways of the human respiratory system rather than
in the alveolar and tracheobronchial regions of the lung, as
would be expected based on the size of the primary
nanoparticles.
Yang et al.
(2012)
Dispersion of
powder by
compressed
air
TiO
2
FESEM
PSD, PNC
Two peaks of nano-TiO
2
aerosol in the diameter range of 10-200
nm and 500-900 nm in the workplace are presented in the
distribution proiling of number concentration curves with the
number concentration of more than 4,000 #/cm
3
and 1,000-2,000
#/cm
3
, respectively. Owing to the spray force of the aerosol
source and the inertia force of lying aerosol particles, the
number concentration at a distance of 3 m shows higher
concentrations than in another sampling distance at the height of
breathing zone
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