Wasit Journal of Pure sciences,
Journal Year:
2023,
Volume and Issue:
2(3), P. 311 - 325
Published: Sept. 30, 2023
Magnetic
iron
oxide
nanoparticles
(Fe3O4NPs)
were
prepared
using
the
co-precipitation
technique
successfully.
The
used
to
modify
chitosan
(CHT)
use
produced
nanocomposite
(CHT/
Fe3O4NPs)
as
an
adsorbent
surface
for
removing
methyl
green
dye
from
its
aqueous
solution
.Infrared
spectroscopy
(FT-IR),
scanning
electron
microscopy
(SEM),
X-ray
dispersion
(EDS),
diffraction
(XRD)
and
thermal
gravimetric
analysis
(TGA)
characterize
Fe3O4NPs).
system
of
adsorption
was
described
by
Langmuir,
Freundlich
Temken
models.
adsorbed
capacity
increases
with
increasing
temperature
which
indicates
endothermic
nature
adsorption.
Environmental Science Nano,
Journal Year:
2023,
Volume and Issue:
11(1), P. 14 - 35
Published: Nov. 7, 2023
This
review
clarifies
the
translocation
of
zinc
oxide
nanoparticles
(ZnO
NPs)
in
plants,
reveals
molecular
mechanisms
toxicity
regulation,
and
emphasizes
potential
risks
composite
systems
NPs.
Knowing
the
fate
of
nanoplastics
in
organisms
is
indispensable
to
assess
risk
these
persistent
environmental
pollutants.
We
designed
an
in-depth
study
on
biodistribution
metal
(europium)-doped
polystyrene
nanoparticles
(EuPSs)
terrestrial
isopods
(Crustacea,
Porcellio
scaber)
upon
dietary
exposure.
Biodistribution
two
types
spherical
EuPSs,
100
nm
and
300
nm,
with
similar
Eu
content
negligible
dissolution
ions
deionized
water,
was
investigated.
In
first
step,
total
concentration
different
body
regions
(gut,
digestive
glands
rest
body)
measured
Inductively
coupled
plasma
mass
spectrometry
(ICP-MS).
Next,
tissue
localisation
particles
analysed
using
X-ray
microtomography,
fluorescent
microscopy
laser
ablation
ICP-MS.
addition,
scanning
electron
used
check
presence
system.
As
levels
parts
other
than
gut,
including
gland,
are
negligibly
low,
we
conclude
that
EuPSs
do
not
accumulate
P.
scaber
following
Based
our
findings,
recommend
complementing
analytical
microscopic
techniques
detailed
physiological
anatomical
insights
investigated
before
drawing
any
conclusions
distribution.
