Environmental Science & Technology,
Год журнала:
2022,
Номер
56(23), С. 17108 - 17118
Опубликована: Ноя. 18, 2022
Limited
information
is
available
about
prenatal
exposure
to
per-
and
polyfluoroalkyl
substances
(PFAS)
in
electronic
waste
(e-waste)
recycling
sites.
In
this
study,
we
determined
21
emerging
PFAS
13
legacy
94
paired
maternal
cord
serum
samples
collected
from
an
e-waste
dismantling
site
Southern
China.
We
found
6:2
fluorotelomer
sulfonate
(6:2
FTSA),
chlorinated
polyfluorinated
ether
Cl-PFESA),
perfluorooctanephosphonate
(PFOPA)
as
the
major
PFAS,
regardless
of
matrices,
at
median
concentrations
2.40,
1.78,
0.69
ng/mL,
respectively,
samples,
2.30,
0.73,
0.72
samples.
Our
results
provide
evidence
that
activities
contribute
human
FTSA,
Cl-PFESA,
PFOPA.
The
trans-placental
transfer
efficiencies
(0.42–0.94)
were
higher
than
perfluorooctanesulfonic
acid
(0.37)
structure-dependent.
substitution
fluorine
with
chlorine
or
hydrogen
and/or
hydrophilic
functional
groups
may
alter
efficiencies.
Multiple
linear
regression
analysis
indicated
significant
associations
between
clinical
parameters,
especially
liver
function
erythrocyte-related
biomarkers.
This
study
provides
new
insights
into
multiple
areas
prevalence
people
living
near
Journal of Environmental Engineering,
Год журнала:
2024,
Номер
150(3)
Опубликована: Янв. 9, 2024
Subsurface-flow
constructed
wetlands
(SSF
CWs),
which
include
horizontal
subsurface–flow
(HSSF
CWs)
and
vertical
(VSSF
have
become
increasingly
popular
for
the
treatment
of
various
waste
streams
such
as
wastewater,
landfill
leachate,
stormwater
runoff.
These
utilize
a
variety
natural
physical,
chemical,
microbial
processes
to
effectively
remove
contaminants.
This
article
aims
provide
valuable
insights
into
application
subsurface-flow
runoff
by
collecting
reviewing
relevant
articles.
Within
realm
contaminants,
this
review
primarily
focuses
on
nutrients,
heavy
metal,
per-
polyfluoroalkyl
substances
(PFAS),
are
commonly
found
in
worldwide.
The
removal
percentages
these
contaminants
vary
across
different
studies,
depending
factors
characteristics
type
scale
wetland,
well
selection
plants
substrates
used.
study
provides
that
significantly
contribute
including
adsorption,
plant
uptake,
biodegradation.
percentage
PFAS
ranges
from
1%
99%
wetlands.
wide
range
comes
differences
between
category,
soil
type,
wetland
configuration,
matrix
effects.
Additionally,
paper
brings
attention
current
gaps
limitations
present
research
conducted
within
field.
It
is
imperative
conduct
further
studies
utilizing
real-world
or
synthetic
deepen
our
comprehension
domain.
Furthermore,
considering
each
category
possesses
unique
properties,
conducting
individual
group
becomes
crucial
attain
comprehensive
understanding
behavior
transformation
CWs.
Environment International,
Год журнала:
2024,
Номер
186, С. 108582 - 108582
Опубликована: Март 16, 2024
Perfluoroalkyl
and
polyfluoroalkyl
substances
(PFASs)
are
synthetic
chemicals,
encompassing
compounds
like
perfluorooctane
sulfonate
(PFOS),
which
have
widespread
applications
across
various
industries,
including
food
packaging
firefighting.
In
recent
years,
China
has
increasingly
employed
6:2
Cl-PFESA
as
an
alternative
to
PFOS.
Although
the
association
between
PFAS
exposure
hepatocellular
carcinoma
(HCC)
been
demonstrated,
underlying
mechanisms
that
promote
HCC
proliferation
uncleared.
Therefore,
we
aimed
investigate
effects
differences
of
PFOS
on
through
in
vivo
vitro
tumor
models.
Our
results
reveal
both
significantly
contribute
vivo.
Exposure
led
reduced
population
doubling
times,
enlarged
cell
colony
sizes,
enhanced
DNA
synthesis
efficiency,
a
higher
proportion
cells
undergoing
mitosis.
Furthermore,
Cl-PFES)
shown
activate
PI3K/AKT/mTOR
signaling
pathway
inhibit
necroptosis.
This
action
consequently
enhances
cells.
phenotypic
assay
findings
suggest
tumorigenic
potential
surpasses
PFOS;
subcutaneous
model
using
nude
mice,
mean
weight
for
Cl-PFESA-treated
cohort
was
2.33
times
observed
(p
<
0.01).
Despite
being
considered
safer
substitute
PFOS,
pronounced
this
chemical
growth
warrant
thorough
assessment
hepatotoxicity
risks
linked
its
usage.
Chemosphere,
Год журнала:
2024,
Номер
356, С. 141946 - 141946
Опубликована: Апрель 9, 2024
End-of-life
electric
and
electronic
devices
stand
as
one
of
the
fastest
growing
wastes
in
world
and,
therefore,
a
rapidly
escalating
global
concern.
A
relevant
fraction
these
corresponds
to
polymeric
materials
containing
plethora
chemical
additives.
Some
those
additives
fall
within
category
hazardous
organic
compounds
(HOCs).
Despite
significant
advances
capabilities
analytical
methods,
comprehensive
characterization
WEEE
plastic
remains
challenge.
This
research
strives
identify
primary
polymers
by
implementing
non-target
suspect
screening
approach.
Gas
chromatography
coupled
time-of-flight
mass
spectrometry
(GC-QTOF-MS),
using
electron
ionization
(EI),
was
applied
for
detection
identification
more
than
300
substances
this
matrix.
preliminary
comparison
carried
out
with
nominal
resolution
EI-MS
spectra
contained
NIST17
library.
BPA,
flame
retardants,
UV-filters,
PAHs,
preservatives
were
among
detected.
Fifty-one
confirmed
authentic
standards.
The
study
establishes
database
m/z
ratios
accurate
characteristic
compounds,
encompassing
HOCs.
Semi-quantification
predominant
conducted
across
48
samples
collected
from
handling
dismantling
facilities
Galicia.
ABS
demonstrated
highest
median
concentrations,
ranging
0.154
4456
μg
g
The Science of The Total Environment,
Год журнала:
2023,
Номер
912, С. 168881 - 168881
Опубликована: Ноя. 30, 2023
Polyfluoroalkyl
and
perfluoroalkyl
(PFAS)
chemicals
are
fluorinated
exhibit
complicated
behavior.
They
determined
highly
resistant
to
ecological
modifications
that
render
plants
ecologically
robust.
Thermal
stability
water
oil
resistance
examples
of
material
qualities.
Their
adverse
consequences
causing
increasing
worry
due
their
bioaccumulative
nature
in
humans
other
creatures.
Direct
data
indicates
PFAS
exposure
causes
endocrine
system
disruption,
immune
suppression,
obesity,
increased
cholesterol,
cancer.
Several
PFASs
present
drinking
at
low
doses
may
harm
people.
These
cancer-causing
have
caused
concern
for
bodies
all
around
the
globe.
Analytical
techniques
used
identify
measure
an
aqueous
medium
(membrane).
Furthermore,
a
deeper
explanation
is
provided
removal
methods,
including
mixed
matrix
membrane
(MMM)
technology.
By
removing
over
99
%
from
wastewater,
MMMs
effectively
remove
sewage
when
support
contains
adsorbing
components.
we
consider
several
factors
affecting
practical
sorption
methods
onto
various
adsorbents.
Environmental Challenges,
Год журнала:
2024,
Номер
14, С. 100861 - 100861
Опубликована: Янв. 1, 2024
Poly-
and
perfluoalkyl
substances
(PFAS)
have
been
found
in
ocean
water,
sediments,
marine
organisms.
The
objective
of
this
study
was
to
identify
coastal
open
water
conditions
that
affect
accumulation
transport
characteristics
PFAS
areas
waters.
Coastal
were
compared
based
on
the
classification
for
Shoreline
Cleanup
Assessment
Technique
(SCAT).
Open
sea
evaluated
relation
currents.
data
available
literature
from
different
seas
compiled.
Tidal
flats,
sheltered
shores,
salt
brackish
marshes,
bays
estuaries,
mangroves,
with
coral
reefs,
grasses,
kelp
are
favorable
ecosystems
these
environments
vulnerable
long
term
exposure
bioaccumulation.
near
centers
gyres
oceans
trap
accumulate
floating
debris
as
well
contaminated
particles.
highly
productive
mangrove
forests,
seagrasses
marshes
can
locations.
indicate
some
Indian
Ocean
(41.1
ng/L),
North
Pacific
(12.8
Atlantic
(4.0
ng/L)
relatively
high
levels
PFAS.
Marine
organisms
life
spans
likely
over
their
lifespan.
concentrations
at
waters
should
be
monitored
systematically
periodically
establish
baseline
evaluate
changes
column
sediments
overtime.
