Per- and Poly-Fluoroalkyl Substances, and Organophosphate Flame Retardants in the Upper Yangtze River: Occurrence, Spatiotemporal Distribution, and Risk Assessment
Toxics,
Год журнала:
2025,
Номер
13(2), С. 116 - 116
Опубликована: Фев. 1, 2025
Contaminants
of
Emerging
Concern
(CECs),
including
per-
and
polyfluoroalkyl
substances
(PFASs)
organophosphate
flame
retardants
(OPFRs),
have
raised
global
concerns
due
to
their
persistence,
bioaccumulation
potential,
toxicity.
This
study
presents
a
comprehensive
investigation
the
occurrence,
spatiotemporal
distribution,
potential
sources,
ecological
human
health
risks
associated
with
18
PFASs
9
OPFRs
in
surface
waters
upper
Yangtze
River,
China.
The
water
samples
were
collected
from
main
stream
five
major
tributaries
(Min,
Jinsha,
Tuo,
Jialing,
Wu
Rivers)
2022
2023.
total
concentration
ranged
16.07
927.19
ng/L,
17.36
190.42
respectively,
consistently
higher
observed
compared
tributaries.
Ultra-short-chain
(e.g.,
TFMS)
halogenated
TCPP)
predominant
compounds,
likely
originating
industrial
discharges,
wastewater
effluents,
other
anthropogenic
sources.
Ecological
risk
assessments
indicated
low-to-moderate
at
most
sampling
sites,
near
discharge
points.
Human
evaluations
suggested
negligible
non-carcinogenic
but
identified
carcinogenic
OPFR
exposure
for
adults
specific
locations,
particularly
Leshan
city.
highlights
importance
understanding
fate
impacts
provides
valuable
insights
developing
targeted
pollution
control
strategies
management
measures.
Язык: Английский
The Distribution and Seasonality of Per- and Polyfluoroalkyl Substances (PFAS) in the Vertical Water Column of a Stratified Eutrophic Freshwater Lake
Environments,
Год журнала:
2025,
Номер
12(2), С. 48 - 48
Опубликована: Фев. 4, 2025
The
vertical
distribution
and
potential
variability
of
Per-
Polyfluoroalkyl
substances
(PFAS)
in
the
water
column
lacustrine
systems
is
important
to
know
for
sampling
monitoring
purposes,
but
could
also
relate
details
their
fate,
transport,
distribution.
In
this
study,
a
eutrophic
freshwater
lake
(Lake
Monona,
Madison,
WI,
USA)
was
sampled
vertically
PFAS
during
summer
stratification
at
several
depths
(surface
microlayer
1
m
from
bottom)
then
monitored
four
dates
three
following
year
assess
seasonality.
concentration
did
not
exhibit
or
large
column.
However,
seasonal
variation
detected,
as
well
an
increase
related
drought
conditions.
This
study
suggests
that
surface
grab
sample
may
be
sufficient
representative
basic
PFAS.
But
single
provide
complete
understanding
lake,
multiple
samples
should
taken
capture
understand
events.
Язык: Английский
Enhanced removal of perfluorooctanoic acid and perfluorooctane sulphonic acid by direct current in iron-based constructed wetlands
Water Research,
Год журнала:
2025,
Номер
277, С. 123302 - 123302
Опубликована: Фев. 15, 2025
Язык: Английский
Sand dollars (Mellita quinquiesperforata): A new bioindicator for tracking PFAS in coastal waters
Marine Pollution Bulletin,
Год журнала:
2025,
Номер
213, С. 117673 - 117673
Опубликована: Фев. 17, 2025
Язык: Английский
Background PFAS Concentrations in Surface Soil of Massachusetts and Northern New England: Regional and Global Source Patterns and Regulatory Relevance
Lisa McIntosh,
Catharine Rockwell,
Samantha Olney
и другие.
Remediation Journal,
Год журнала:
2025,
Номер
35(2)
Опубликована: Янв. 1, 2025
ABSTRACT
Surface
soil
(0–15
cm
below
grade)
was
collected
from
100
locations
at
25
properties
across
Massachusetts
and
analyzed
for
36
per‐
polyfluoroalkyl
substances
(PFAS).
Perfluorooctane
sulfonic
acid
(PFOS)
perfluorooctanoic
(PFOA)
were
detected
in
every
sample
the
highest
concentrations
relative
to
other
PFAS.
Perfluorinated
carboxylic
acids
more
common
than
perfluoroalkyl
acids,
PFAS
significantly
correlated
with
organic
carbon
content.
No
fluorotelomers,
perfluoroalkane
sulfonamide
or
sulfonyl
substances,
ether
chloropolyfluoroalkyl
detected.
Comparison
results
northern
New
England
(Maine,
Vermont,
Hampshire)
exhibit
a
consistent
pattern.
PFOS
PFOA
are
most
commonly
found
concentrations.
The
predominant
present
their
as
function
of
chain
length
different
regional
industrial
sources
like
deposition
estimates
resulting
global
emissions,
including
outside
North
America,
atmospheric
precursor
degradation.
Anthropogenic
background
may
exceed
cleanup
standards
based
on
leaching
groundwater,
investigation
remediation
liabilities
property
owners
even
though
no
onsite
release
has
occurred.
Given
ubiquity
today,
anthropogenic
should
be
considered
during
promulgation
standards.
Язык: Английский
Per- and Polyfluoroalkyl Substances (PFAS) Composition and Distribution in Surface Water of the Miccosukee Indian Reservation, Everglades and Tributaries in the Coastal Environment of Miami, Florida
C. W. Heath,
A. R. Castañeda,
Edward Ornstein
и другие.
Environmental Research,
Год журнала:
2025,
Номер
unknown, С. 121627 - 121627
Опубликована: Апрель 1, 2025
Язык: Английский
Occurrence and Toxicity Mechanisms of Perfluorononanoic Acid, Perfluorodecanoic Acid, and Perfluoroundecanoic Acid in Fish: A Review
Toxics,
Год журнала:
2025,
Номер
13(6), С. 436 - 436
Опубликована: Май 26, 2025
Per-
and
polyfluoroalkyl
substances
(PFAS)
are
used
in
consumer
products
manufacturing.
Perfluorononanoic
acid
(PFNA),
perfluorodecanoic
(PFDA),
perfluoroundecanoic
(PFUnDA)
long-chain
PFAS
composed
of
9,
10,
11
carbons,
respectively,
which
exert
sublethal
toxicity
to
aquatic
species.
Here,
we
review
the
data
regarding
environmental
fate
ecotoxicology
these
understudied
fish.
The
objectives
this
study
were
(1)
compile
literature
compare
physiological
or
molecular
signaling
pathways
disrupted
by
PFNA,
PFDA,
PFUnDA;
(2)
uncover
potential
biomarkers
longer-chain
using
gene
ontology
computational
approaches
shed
light
on
their
mechanism
action.
Studies
show
that
have
a
range
effects
fish,
including
developmental
issues,
changes
expression,
behavioral
modifications.
Based
our
review,
PFNA
has
been
studied
more
frequently
fish
compared
PFDA
however,
longer-chained
proposed
pose
greater
toxicity.
approach,
prominent
affected
include
insulin
[“Insulin
->
CEBPA/CTNNB/FOXA/FOXO”,
“Insulin
STAT
Expression
Targets”],
immune
system
[“TNF
Targets”,
“IL6
“IL2
growth
hormone/prolactin
[“GH1/PRLR
“PRL/GHR
“PRL/PRLR
Targets”].
Several
transcripts
related
cholesterol
metabolism
also
PFNA.
This
summarizes
current
knowledge
distribution,
fate,
PFUnDA
teleost
highlighting
responses
could
aid
assessing
future
studies.
Язык: Английский