Food Chemistry,
Journal Year:
2025,
Volume and Issue:
480, P. 143891 - 143891
Published: March 15, 2025
This
study
presents
a
novel
method
for
in
situ
extraction
of
per-
and
polyfluoroalkyl
substances
(PFAS)
from
intact
meat
samples
using
recessed
solid
phase
microextraction
(SPME)
device
coupled
with
LC-MS/MS.
The
SPME
matrix-compatible
coating
(HLB-WAX/PAN)
the
section,
exhibited
mechanically
robust
low
matrix
effects
(-13.7-11.1
%).
Key
parameters
influencing
efficiency,
including
time,
adsorbent
amount,
temperature,
desorption
time
were
comprehensively
optimized.
stability
PFAS
adsorbed
onto
during
storage
at
different
temperatures
durations
was
also
assessed.
Under
optimized
conditions,
proposed
demonstrated
applicability
across
pork,
beef,
lamb
tissues
excellent
linearity
(R2
≥
99.32
%),
good
sensitivity
(LOD
range
0.01-1.52
ng/g),
as
well
acceptable
accuracy
reproducibility
(intra-day
inter-day).
Compared
conventional
methods,
SPME-LC-MS/MS
shows
advantages
simple
operation,
short
organic
solvent
consumption
effects.
approach
offers
straightforward
reliable
solution
direct
monitoring
commercial
has
potential
on-site
application.
Water,
Journal Year:
2025,
Volume and Issue:
17(2), P. 149 - 149
Published: Jan. 8, 2025
Per-
and
polyfluoroalkyl
substances
(PFAS)
have
become
a
well-known
class
of
anthropogenic
pollutants
in
coastal
regions.
It
is
known
that
PFAS
primarily
enter
the
sea
from
nearshore
sources,
dry
deposition,
wet
deposition.
However,
contribution
offshore
sources
to
pollution
remains
poorly
understood.
Our
study
aims
investigate
occurrence
74
across
15
groups
region
eastern
China
characterize
their
spatial
distribution
by
focusing
on
critical
roles
both
sources.
Results
revealed
26
were
detected
(i.e.,
Ou
River
Wenzhou
Bay),
with
detection
frequencies
ranging
4.3%
100.0%.
Notably,
over
10
for
first
time
region,
such
as
perfluorooctane
sulfonamide
(FOSA),
hexafluoropropylene
oxide
dimer
acid
(HFPO-DA),
6:2
fluorotelomer
sulfonic
(6:2
FTSA),
among
others.
The
concentrations
ranged
0.0018
76.31
ng/L,
perfluorooctanoic
(PFOA)
dominant
congener.
Spatial
analysis
indicated
area
was
more
severely
polluted
compared
area,
specific
hotspots
identified
near
industrialized
areas.
certain
PFAS,
perfluorobutane
(PFBS)
perfluoro-3,6-dioxaheptanoic
(PFDHA),
exhibited
contrasting
pattern,
higher
observed
island
perimeters.
These
findings
suggest
Bay
originates
highlighting
complex
interplay
between
island-related
activities.
The Journal of Physical Chemistry A,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 7, 2025
Perfluoroalkyl
ether
carboxylic
acids
(PFECA),
which
are
replacements
for
legacy
per-
and
polyfluorinated
alkyl
substances
(PFAS),
exhibit
undesirable
properties
often
require
thermal
remediation.
Detailed
kinetic
evaluation
of
the
pyrolysis
PFECA
was
achieved
computationally
using
density
functional
ωB97xD/6-311+G
(d,p)
to
establish
homolytic
bond
dissociation
energies
acid
carboxylate
forms
∼90-100
kcal/mol
as
low
65
±
3
kcal/mol,
respectively.
The
negatively
charged
oxygenated
radical
products
collapse
with
activation
(Ea)
Ea(β-scission)
∼
12-42
Ea(1,2-F-shift)
24-47
Ea(oxygen
atom-shift)
33-35
enthalpies
(ΔH)
ΔH(F-loss)
56-71
kcal/mol.
perfluoroalkoxyl
intermediates
transform
via
Ea(β
scission)
2-9
Ea(F-loss)
25-43
have
lifetimes
in
microsecond-to-nanosecond
range
at
1000
K
1
atm,
some
radicals
stable
hours
or
even
days
respect
unimolecular
processes.
results
provide
new
fundamental
thermodynamic
parameters
partitioning
degradation
pathways
specific
structure-activity
relationships
intermediates,
leading
final
products.
These
critical
modeling
treatment
related
PFAS.
Foods,
Journal Year:
2025,
Volume and Issue:
14(6), P. 958 - 958
Published: March 11, 2025
Per-
and
polyfluoroalkyl
substances
(PFASs)
are
found
everywhere,
including
food,
cosmetics,
pharmaceuticals.
This
review
introduces
PFASs
comprehensively,
discussing
their
nature
identifying
interconnection
with
microplastics
impacts
on
public
health
the
environment.
The
human
cost
of
decades
delay,
cover-ups,
mismanagement
plastic
waste
is
outlined
briefly
explained.
Following
that,
long-term
effects
critically
assessed.
Risk
assessment
then
reviewed,
mentioning
different
tools
models.
Scientific
research
in
United
States
America
analyzed,
taking
into
consideration
Center
for
Disease
Control
(CDC)'s
PFAS
Medical
Studies
Guidelines.
impact
activities
studies
around
world
have
focused
levels
food
products
dietary
intake
countries
such
as
China,
European
countries,
USA
Australia.
Moreover,
drinking
water
regard
to
risks,
mitigation,
regulatory
needs,
account
chemical
contaminants
safety.
Finally,
briefings
specific
regions
discussed,
referring
Australia,
Vietnam,
Canada,
Europe,
(USA),
South
America,
Africa.
crisis
a
multifaceted
issue,
exacerbated
by
mismanagement,
it
discussed
context
applying
following
problem-solving
analytical
tools:
Domino
Effect
Model
accident
causation,
Swiss
Cheese
Theory
Model,
Ishikawa
Fish
Bone
Root
Cause
Analysis.
Last
but
not
least,
PFASs'
Sustainable
Development
Goals
(SDGs)
2030
rigorously
discussed.
Environments,
Journal Year:
2025,
Volume and Issue:
12(3), P. 88 - 88
Published: March 13, 2025
Per-
and
polyfluoroalkyl
substances
(PFAS)
are
increasingly
detected
in
remote
environments.
This
review
aims
to
provide
a
comprehensive
overview
of
the
types
concentrations
PFAS
found
air,
water,
soil,
sediments,
ice,
precipitation
across
different
environments
globally.
Most
recent
studies
on
occurrence
have
been
conducted
for
Arctic,
Antarctica,
regions
China.
Elevated
perfluorooctane
sulfonate
(PFOS)
Meretta
Resolute
Lakes
reflects
impact
local
sources
like
airports,
while
lakes
located
such
as
East
Antarctica
Canadian
High
Arctic
suggest
atmospheric
deposition
primary
input.
Long-chain
(≥C7)
accumulate
short-chain
remain
shown
Hulun
Lake.
Oceanic
concentrated
surface
waters,
driven
by
deposition,
with
PFOA
PFOS
dominating
oceans
due
current
emissions
legacy
contamination.
Coastal
areas
display
higher
levels
from
sources.
sediment
analysis
highlights
ocean
transport
significant
contributors.
Antarctic
coastal
biological
input,
notably
penguins.
The
Tibetan
Plateau
data
confirm
long-range
transport,
linear
favoring
gaseous
states,
branched
more
likely
associate
particulates.
Climatic
factors
Indian
monsoon
temperature
fluctuations
affect
deposition.
Short-chain
prevalent
snowpacks,
serving
temporary
reservoirs.
Mountainous
regions,
Plateau,
act
cold
traps,
accumulating
precursors.
Future
should
focus
identifying
quantifying
PFAS.
Food Chemistry,
Journal Year:
2025,
Volume and Issue:
480, P. 143891 - 143891
Published: March 15, 2025
This
study
presents
a
novel
method
for
in
situ
extraction
of
per-
and
polyfluoroalkyl
substances
(PFAS)
from
intact
meat
samples
using
recessed
solid
phase
microextraction
(SPME)
device
coupled
with
LC-MS/MS.
The
SPME
matrix-compatible
coating
(HLB-WAX/PAN)
the
section,
exhibited
mechanically
robust
low
matrix
effects
(-13.7-11.1
%).
Key
parameters
influencing
efficiency,
including
time,
adsorbent
amount,
temperature,
desorption
time
were
comprehensively
optimized.
stability
PFAS
adsorbed
onto
during
storage
at
different
temperatures
durations
was
also
assessed.
Under
optimized
conditions,
proposed
demonstrated
applicability
across
pork,
beef,
lamb
tissues
excellent
linearity
(R2
≥
99.32
%),
good
sensitivity
(LOD
range
0.01-1.52
ng/g),
as
well
acceptable
accuracy
reproducibility
(intra-day
inter-day).
Compared
conventional
methods,
SPME-LC-MS/MS
shows
advantages
simple
operation,
short
organic
solvent
consumption
effects.
approach
offers
straightforward
reliable
solution
direct
monitoring
commercial
has
potential
on-site
application.