Water,
Год журнала:
2023,
Номер
15(22), С. 3890 - 3890
Опубликована: Ноя. 8, 2023
As
contaminants
are
often
present
in
aquatic
environments
as
mixtures,
they
may
interact
with
each
other
and
affect
living
organisms
differently
than
when
tested
individually.
Emerging
pollutants
such
pharmaceuticals
microplastics
can
be
influenced
by
various
environmental
factors,
UV/Vis
radiation
being
among
the
most
significant.
This
study
aimed
to
evaluate
photodegradation
of
antidepressant
duloxetine
presence
four
types
microplastics.
Acute
toxicity
was
using
Spirotox
assay,
concentration
determined
HPLC-DAD
analysis,
resulting
products
were
HPLC-MS/MS.
Following
1
2
h
exposure
a
sunlight
simulator,
concentrations
decreased
nine
thirteen
times,
respectively,
while
its
protozoa
only
two
three
times.
The
samples
did
not
either
process
or
duloxetine.
HPLC-MS/MS
analysis
revealed
34
products.
In
silico
T.E.S.T.
program
for
protozoan
Tetrahymena
pyriformis
indicated
that
one-third
photoproducts
toxic,
found
much
more
toxic
high
one
these
compounds
confirmed
test.
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(51), С. 22502 - 22518
Опубликована: Дек. 11, 2024
Microplastics
(MPs),
as
an
emerging
contaminants
category,
can
undergo
complex
aging
in
a
variety
of
environmental
matrices
which
the
chemical
bonds
polymer
molecules
be
broken
to
form
free
radicals.
While
existence
radicals
aged
plastics
has
been
known
for
over
half
century,
only
recently
significant
research
on
new
type
environmentally
risky
substance,
namely
persistent
(EPFRs),
present
MPs
and
their
effects,
started,
but
it
is
still
its
infancy.
To
address
these
issues,
this
work
examines
EPFR
generation
effect
by
reviewing
publications
from
2012
2023.
The
processes
mechanisms
environment
are
first
summarized.
Then,
occurrence
formation
EPFRs
specifically
discussed.
Additionally,
reactivity
influencing
factors
comprehensively
considered,
such
physicochemical
properties,
oxygen
content,
coexisting
substances.
Due
reactivity,
interact
directly
with
some
substances
(e.g.,
Environmental Science & Technology,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 31, 2024
Aged
plastics
possess
diverse
interactive
properties
with
metals
compared
to
pristine
ones.
However,
the
role
of
aging
for
nanoplastics
(NPs)
in
being
a
carrier
mercury
(Hg),
common
marine
environmental
pollutant,
and
their
combined
effects
remain
unclear.
This
study
investigated
effect
ultraviolet-aged
NPs
on
Hg
ensuing
toxicity
copepod
Tigriopus
japonicus
under
multigenerational
scenario.
revealed
better
bioaccumulation
than
ones,
which
was
increased
by
1.61,
1.52,
1.54
times
F0,
F1,
F2,
respectively,
probably
attributed
levels
O-containing
functional
groups
adsorption
Hg.
Consequently,
relative
alone,
aged
(rather
ones)
significantly
compromised
copepod's
fitness,
e.g.,
survival
rate
decreasing
74.2
62.1%
F1
respectively.
is
possibly
linked
most
pronounced
transcriptomic
response
NPs,
including
disturbed
cuticle
formation,
activated
antioxidants,
down-regulation
reproductive
genes.
Overall,
our
findings
emphasize
non-negligible
risk
as
carriers
toxic
provide
understanding
about
long-term
coexisting
metal
pollution
organisms
real
environments.
Environment International,
Год журнала:
2023,
Номер
179, С. 108188 - 108188
Опубликована: Сен. 1, 2023
The
physiochemical
properties
of
graphene
oxide
may
be
affected
by
sunlight
irradiation.
However,
the
underlying
mechanisms
that
alter
and
subsequent
intergenerational
effects
are
not
sufficiently
investigate.
Epigenetics
is
an
early
sensitive
marker
for
nanomaterial
exposure
due
to
epigenetic
memory.
In
this
study,
we
investigate
changes
in
physicochemical
maternal
simulated
sunlight-irradiated
polyethyleneimine-functionalized
(SL-PEI-GO).
Results
show
(PEI-GO)
can
altered
significantly
oxidation
carbon
atoms
with
unpaired
electrons
present
defects
on
edges
PEI-GO
sunlight.
First,
positive
charges,
sharp
edges,
disordered
structures
SL-PEI-GO
make
it
translocate
from
zebrafish
offspring,
thus
catalyzing
production
reactive
oxygen
species
damaging
mitochondria
directly.
addition,
DNA
methylation
reduce
expression
protocadherin1a,
protocadherin19
cadherin4,
destroying
cell
membrane
integrity,
adhesion
Ca2+
binding.
alteration
induced
activates
Ca2+-CaMKK-brsk2a
pathway,
which
catalyzes
phosphorylation
Tau
eventually
results
appearance
neurodegeneration-like
symptoms,
including
loss
neurons
neurobehavioral
disorders.
This
study
demonstrates
induces
clear
symptoms
offspring
through
both
translocation
nanomaterials
differential
methylation.
These
findings
provide
new
insights
into
health
risks
nature
conditions.
Water,
Год журнала:
2023,
Номер
15(22), С. 3890 - 3890
Опубликована: Ноя. 8, 2023
As
contaminants
are
often
present
in
aquatic
environments
as
mixtures,
they
may
interact
with
each
other
and
affect
living
organisms
differently
than
when
tested
individually.
Emerging
pollutants
such
pharmaceuticals
microplastics
can
be
influenced
by
various
environmental
factors,
UV/Vis
radiation
being
among
the
most
significant.
This
study
aimed
to
evaluate
photodegradation
of
antidepressant
duloxetine
presence
four
types
microplastics.
Acute
toxicity
was
using
Spirotox
assay,
concentration
determined
HPLC-DAD
analysis,
resulting
products
were
HPLC-MS/MS.
Following
1
2
h
exposure
a
sunlight
simulator,
concentrations
decreased
nine
thirteen
times,
respectively,
while
its
protozoa
only
two
three
times.
The
samples
did
not
either
process
or
duloxetine.
HPLC-MS/MS
analysis
revealed
34
products.
In
silico
T.E.S.T.
program
for
protozoan
Tetrahymena
pyriformis
indicated
that
one-third
photoproducts
toxic,
found
much
more
toxic
high
one
these
compounds
confirmed
test.
