Archivio antropologico mediterraneo,
Год журнала:
2024,
Номер
26(2)
Опубликована: Янв. 1, 2024
This
article
explores
the
results
of
an
ethnographic
investigation
carried
out
between
November
2022
and
March
2023,
within
agricultural
sector
in
highly
PFAS-contaminated
areas
Veneto
region,
Italy.
In
order
to
understand
how
farmers
experienced
contamination
what
they
think
about
their
experiences,
field
research
semi-structured
interviews
were
conducted.
absence
any
institutional
support
clear
regulations,
laissez-faire
approach
has
accentuated
individual
accountability,
leaving
alone
deal
with
these
chemical
compounds.
Considering
this
context,
precarity
farming
sector,
a
main
feature
socioecological
context
contamination,
along
fractures
silence
resulting
from
are
analyzed.
Environmental Science & Technology Letters,
Год журнала:
2025,
Номер
12(3), С. 327 - 333
Опубликована: Фев. 7, 2025
Lyon,
a
major
hub
for
chemical
industries
in
France,
has
been
identified
as
contamination
hotspot
of
per-
and
polyfluoroalkyl
substances
(PFAS).
Major
companies
the
Pierre-Bénite
area
have
used
PFAS
production
fluoropolymers
fluorotelomers,
with
effluents
discharged
into
Rhône
River.
This
together
other
sources,
such
firefighting
foam
use
at
vicinal
harbor
oil
depot,
likely
resulted
complex
signature.
study
investigated
various
water
sources
southern
including
ponds,
rivers,
factory
channels,
wells,
springs,
tap
water.
Out
47
samples,
22
had
Σ77PFAS
above
100
ng/L
(maximum:
∼700
ng/L),
67%
samples
exceeded
European
guideline
Σ20PFAS.
Target
profiles
were
dominated
by
perfluoroalkyl
carboxylates
(particularly
C4
to
C8),
agreement
their
historical
or
current
industrial
usage.
Suspect
screening
also
revealed
occurrence
electrochemical
fluorination
precursors
N-sulfopropyldimethylammoniopropyl
perfluorohexanesulfonamido
acetic
acid
(N-SPAmP-FHxSAA)
bistriflimide
(used
composition
ionic
liquids).
Certain
ESI+
(e.g.,
6:2
fluorotelomer
sulfonamidopropyl
betaine
(6:2
FTAB))
ESI-
FTS,
FTSAS-sulfone)
compounds,
more
prevalent
surface
than
groundwater.
Per-
or
polyfluoroalkyl
substances
(PFASs)
are
man-made
compounds
involved
in
compositions
of
many
industrial
processes
and
consumer
products.
They
categorized
into
two
main
families
based
on
their
molar
mass:
though
low
mass
products
(<1000
Da)
toxic,
mobile,
bioaccumulable,
cross
the
human
membranes,
others
much
higher
masses,
e.g.,
fluorinated
macromolecules
especially
fluoropolymers,
safe
reliable,
do
not
face
such
concerns,
membranes
(hence,
they
regarded
as
Polymers
Low
Concern),
applications
including
medical
high-value-added
materials
devices.
Because
former
family
has
led
to
a
severe
global
contamination,
recent
regulating
agencies
Europe
(REACH)
USA
(EPA)
have
aimed
at
restricting
fluorochemicals.
Recently,
consultations
from
affected
organisms
industries
more
than
5600
answers
comments.
This
review
supplies
an
update
overall
situation
PFASs,
limitations,
regulations,
end
life,
degradations,
possible
alternatives.
npj Science of Food,
Год журнала:
2024,
Номер
8(1)
Опубликована: Окт. 6, 2024
Per-
and
polyfluoroalkyl
substances
(PFAS)
pose
an
emerging
environmental
risk
impacting
food
products
ecosystems.
This
study
analyzes
over
150,000
entries
from
safety
authorities
scientific
publications
2017
onwards.
Our
findings
show
that
fish
&
seafood,
biota
have
the
highest
PFAS
concentrations
due
to
contamination
bioaccumulation.
Surface
water
samples
also
frequently
contain
PFAS,
raising
concerns
about
long-term
ecological
human
health
effects.
Comprehensive
strategies
are
essential
mitigate
these
risks.
Eco-Environment & Health,
Год журнала:
2024,
Номер
3(3), С. 355 - 368
Опубликована: Июнь 27, 2024
The
detection
of
per-
and
polyfluoroalkyl
substances
(PFAS)
in
water
presents
a
significant
challenge
for
developing
countries,
requiring
urgent
attention.
This
review
focuses
on
understanding
the
emergence
PFAS
drinking
water,
health
concerns,
removal
strategies
systems
countries.
indicates
need
more
studies
to
be
conducted
many
nations
due
limited
information
environmental
status
fate
PFAS.
consequences
are
enormous
cannot
overemphasized.
Efforts
ongoing
legislate
national
standard
water.
Currently,
there
few
known
mitigation
efforts
from
African
contrast
several
Asia.
Therefore,
is
an
develop
economically
viable
techniques
that
could
integrated
into
large-scale
operations
remove
region.
However,
despite
success
achieved
with
removing
long-chain
required
eliminating
short-chain
moieties
Ultrasonics Sonochemistry,
Год журнала:
2025,
Номер
113, С. 107222 - 107222
Опубликована: Янв. 5, 2025
Perfluorooctanesulfonic
acid
(PFOS)
is
one
of
the
most
investigated
Per-
and
polyfluoroalkyl
substances
(PFAS)
for
being
strongest
compound
to
eliminate
having
adverse
health
concerns.
In
this
work,
we
have
conducted
sonochemical
treatment
PFOS
simulated
water
under
high
(500
kHz)
low
(22
frequencies
while
monitoring
operational
parameters
via
an
integrated
system.
The
advanced
system
includes
software
monitor
power,
solution
temperature
frequency
allowing
distinctive
control
reaction
conditions.
Considering
lack
calorimetric
measurements
in
earlier
studies
difficulty
achieving
comparative
outcomes,
precise
determination
electrical
energy
per
order
(EEO)
were
performed
study.
complete
removal
was
achieved
500
kHz
with
optimum
including
initial
pollutant
concentration
(5
mg/L),
ultrasound
power
density
(400
W/L)
(25
°C)
within
180
min
treatment.
mineralization
extents
(defluorination)
determined
by
ultra-high
performance
liquid
chromatography-mass
spectrometry
(UPLC-MS/MS)
ion-chromatography
(IC)
analysis.
Under
conditions,
100
%
99
achieved.
rate
constant
(k)
ranged
from
0.011
0.031
min-1
(first-order
reaction),
which
increased
increase
density.
While
did
not
significantly
affect
efficiency,
found
a
prominent
effect
on
constant.
However,
experiments
at
showed
negligible
efficiency.
specific
requirement
reaching
90
considering
consumed
ultrasonic
main
source
be
700
kWh/m3,
much
lower
than
other
reported
work
similar
This
will
useful
both
laboratory
industrial
upscaling
acting
as
benchmark
reference
follow.
Journal of Separation Science,
Год журнала:
2025,
Номер
48(1)
Опубликована: Янв. 1, 2025
ABSTRACT
Per‐
and
polyfluoroalkyl
substances
(PFAS)
are
a
widely
used
class
of
synthetic
chemicals
that
pose
significant
global
environmental
health
threat
due
to
their
persistent
bioaccumulation
toxicity
caused
by
strong
C‐F
bonds
in
structures.
PFAS
usually
exist
trace
concentrations
water
bodies,
which
poses
great
challenges
for
analysis.
In
this
study,
environmentally
friendly
cellulose
was
modified
with
polyaniline
through
situ
oxidative
polymerization,
as
the
filter
paper
solid‐phase
extracting
23
water.
Characterization
techniques
such
scanning
electron
microscope,
Fourier
transform
infrared
spectroscopy,
X‐ray
photoelectron
spectrometer,
thermogravimetric
analysis
indicated
successful
synthesis
structurally
stable
polyaniline‐modified
(PANI/CFP).
Then,
high‐performance
liquid
chromatograph‐triple
quadrupole
mass
spectrometry
determination
method
established
from
using
PANI/CFP
extraction.
The
optimal
adsorption
occurred
at
solution
pH
3.0–5.0,
best
elution
efficiency
can
be
achieved
methanol
2%
added
ammonia
mechanism
considered
result
synergistic
effects
between
physical
chemical
adsorption.
recovery
rates
groundwater,
surface
water,
wastewater
ranged
65.8%
105%,
limits
detection
quantification
0.44
36.5
ng/L.
After
being
reused
five
times,
still
maintain
good
extraction
rate
PFAS.
This
study
successfully
prepared
an
experimental
flow
its
application
has
characteristics
structure
properties,
easy
operation.
