Human and Ecological Risk Assessment An International Journal,
Journal Year:
2024,
Volume and Issue:
30(7-8), P. 763 - 782
Published: Sept. 13, 2024
HERA's
landmark
Finkel–Johnson
article
uses
lay
elicitations
about
de-minimis
and
insignificant
risk/cost
to
outline
a
new
risk-assessment
paradigm.
This
response
outlines
their
paradigm's
many
strengths
raises
three
main
questions
10
subquestions
(Q1–Q10)
help
make
paradigm
even
better.
These
address
context-dependent-risk
probabilities;
single-chemical
exposure,
joint-multichemical-action
risks;
survey
respondents'
objective
numeracy.
The
shows
chemical
body
burdens
also
demonstrate
the
need
for
Microplastics
(MPs)
and
per-
polyfluoroalkyl
substances
(PFASs)
are
ubiquitous
contaminants
in
environments,
yet
their
co-occurrence
interactions
remain
insufficiently
understood.
In
this
study,
we
confirmed
the
concurrent
presence
of
MPs
PFASs
distinct
distribution
patterns
a
wastewater
treatment
plant
(WWTP)
through
comprehensive
sampling
analysis
effort.
Significant
correlations
(p
<
0.05)
were
observed
between
specific
types
PFASs,
suggesting
shared
sources.
Moreover,
identified
as
carriers
with
PFAS
concentration
ranging
122
166
ng/g,
predominantly
consisting
perfluorooctanoic
acid
(PFOA)
perfluorobutanoic
(PFBA).
The
laboratory
verification
experiment
revealed
that
could
be
leached
from
aqueous
which
commercial
exhibited
higher
leaching
potential,
highest
combined
perfluorooctanesulfonate
(PFOS),
PFOA,
PFBA
reaching
10.4
ng/mL.
PFOS
demonstrated
desorption
efficiency
exceeding
120%
sorption/desorption
experiments,
confirming
its
release
themselves.
These
results
highlighted
dual
roles
both
sources
PFASs.
contaminant
profiles
across
different
matrices
WWTP
provide
valuable
insights
form
basis
for
further
research
into
proactive
measures
to
effectively
mitigate
environmental
contamination.
Environment International,
Journal Year:
2024,
Volume and Issue:
193, P. 109109 - 109109
Published: Nov. 1, 2024
Micro/Nano
plastics
(MNPs)
pollutants
are
widespread
in
the
environment,
raising
significant
concerns
about
their
biosafety.
Emerging
studies
indicate
that
urinary
system
is
a
primary
accumulation
site
for
MNPs,
leading
to
severe
tissue
and
functional
damage.
This
review
aims
summarize
recent
research
on
potential
hazards
MNPs
may
pose
system,
highlighting
mechanisms
of
toxicity
current
state
knowledge.
Studies
have
shown
enter
human
body
through
drinking
water,
food
chain,
inhalation,
skin
contact.
They
penetrate
bloodstream
via
digestive,
respiratory,
systems,
subsequently
dispersing
various
organs,
including
system.
The
might
induce
cellular
oxidative
stress,
inflammation,
apoptosis,
autophagy,
"intestine-kidney
axis",
other
possible
toxic
mechanisms.
These
processes
could
disrupt
kidney
metabolic
functions
promote
fibrosis,
thereby
potentially
increasing
risk
diseases.
Despite
ongoing
research,
understanding
MNPs'
impact
remains
limited.
Therefore,
this
provides
comprehensive
overview
highlights
key
challenges,
outlines
future
directions.
It
offers
theoretical
basis
development
effective
protective
measures
policies.
Sustainability,
Journal Year:
2025,
Volume and Issue:
17(7), P. 2926 - 2926
Published: March 26, 2025
Microplastic
pollution
levels
and
potential
sources
of
contamination
in
North
Central
Appalachia
are
evaluated
to
fill
a
major
knowledge
gap
regarding
microplastics
freshwater
systems,
which
lead
negative
consequences
for
the
sustainability
healthy
freshwaters.
Fifty-five
northern
hogsucker
fish
were
sampled
from
nine
sites
throughout
seven
streams
region.
particles
extracted
gastrointestinal
(GI)
tracts
via
10%
KOH
digestion
identified
visually.
A
total
2185
identified,
ranging
between
8
274
particles/individual
an
average
39.73
particles/individual.
The
most
found
within
Cheat
watershed,
particularly
at
Big
Sandy
Creek
downstream
site,
followed
by
tributaries
Monongahela
Ohio
Rivers.
particle
type
was
fiber
(96.61%).
There
positive
relationship
length
number
particles.
Agricultural
land
use
E.
coli
abundance
both
positively
correlated
with
microplastic
abundance.
sewage
input
appear
be
important
drivers
these
streams,
although
we
cannot
rule
out
influence
atmospheric
deposition.
These
results
point
widespread
ecosystems
Appalachia.
