Per- and polyfluorinated substances in reservoir water from a metropolitan city in the Guangdong-Hong Kong-Macao Greater Bay Area, China, and their ecological risks
Yiming Ge,
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Yi Huang,
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Linshen Xie
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et al.
Environmental Chemistry and Ecotoxicology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Language: Английский
New Sources of Very Persistent and Very Mobile (vPvM) Substances: A Case Study of the Fluorinated Herbicide Pyroxasulfone
Environmental Science & Technology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 3, 2025
With
the
increasing
use
of
fluorinated
agrochemicals,
more
compounds
enter
into
environment.
Pyroxasulfone
(PYS),
a
broad-spectrum
herbicide
containing
an
aromatic
CF3
(Ar-CF3),
is
expected
to
grow
significantly
in
application.
Although
several
transformation
products
(TPs)
PYS
have
been
reported,
their
distribution
and
contribution
processes
remain
largely
unknown.
This
study
combined
laboratory
simulations
field
study.
In
soil
incubation
surface
photolysis
experiments,
(5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methanesulfonic
acid
(TFPSA)
was
identified
as
main
TP
soil,
accounting
for
over
90%
all
TPs.
Field
results
showed
that
TFPSA
were
species
(6.48
±
1.82
1.54
0.90
ng
g-1
wet
weight)
corn
plants
(2.55
2.61
31.1
39.6
dry
weight
roots)
before
harvest.
Surface
water
experiments
TP246
major
TPs
no
significant
photodegradation
observed.
Persistent
(P)
mobile
(M)
property
assessment
indicated
TFPSA,
TP246,
other
Ar-CF3
various
agrochemicals
could
be
potential
very
P
M
(vPvM)
substances.
More
attention
should
paid
Language: Английский
Effect of per- and polyfluoroalkyl substances on neurodevelopment: Evidence-based risk assessment in the TRAEC strategy context
Jie Ning,
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Chaoshun Ding,
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Haoyi Xu
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et al.
Environment International,
Journal Year:
2024,
Volume and Issue:
unknown, P. 109003 - 109003
Published: Sept. 1, 2024
Although
emerging
evidence
on
the
association
between
per-
and
polyfluoroalkyl
substances
(PFASs)
neurodevelopment
have
been
investigated,
there
is
no
consensus
effect
of
maternal
PFASs
in
offspring.
Here,
we
assessed
risk
exposure
offspring
using
a
novel
Targeted
Risk
Assessment
Environmental
Chemicals
(TRAEC)
strategy
based
multiple
evidence.
The
from
five
online
databases
were
analyzed
neurodevelopment.
potential
was
evaluated
by
TRAEC
strategy,
which
conducted
comprehensive
scoring
system
with
reliability,
correlation,
outcome
fitness
integrity.
studies
additional
researchers'
experiments
included
present
study
to
proceed
following
assessment.
Based
framework
evaluation
health
risks
classified
as
low
(absolute
value
0-4),
medium
4-8),
high
8-10).
In
study,
medium-risk
level
5.61
overall
risk-score.
population-attributable
(PAR)
8.26
%
for
exposure.
identified
low-risk
prenatal
ASD
behavioral
disabilities.
chain
length,
type
neurodevelopmental
trajectories
contributed
Consistent
results
four
criteria-based
tools
(ToxRTool,
SciRAP,
OHAT
IRIS),
assessment
demonstrated
robustness
reliability
study.
These
illustrated
disorders
addition,
provided
scientific
structured
method
disorders,
promoting
consistency
validation
Language: Английский