Water,
Год журнала:
2023,
Номер
15(16), С. 2958 - 2958
Опубликована: Авг. 16, 2023
This
paper
presents
a
procedure
for
the
determination
of
bisphenol
A
(BPA)
in
seawater.
Gas
chromatography
coupled
with
mass
spectrometry
(GC-MS)
was
used
as
analytical
method,
preceded
by
analyte
isolation
via
solid-phase
extraction
(SPE).
Initially,
best
conditions
extraction,
derivatization,
and
GC-MS
analysis
were
established.
The
need
derivatization
BPA
investigated,
this
reason,
two
methods
sample
preparation
compared:
without
step.
parameters
compared
each
other,
more
efficient
method
chosen
marine
water
samples.
Afterwards,
validation
process
carried
out
following
determined:
limit
detection
(LOD),
quantification
(LOQ),
linearity,
precision,
reproducibility,
repeatability.
Finally,
results
samples
collected
from
five
harbor
basins
Port
Gdynia
using
an
unmanned
mobile
research
unit,
HydroDron-1,
presented.
identified
concentrations
ranged
0.01
µg/L
to
0.03
µg/L,
depending
on
investigated
area.
Environmental Pollution,
Год журнала:
2024,
Номер
356, С. 124218 - 124218
Опубликована: Май 28, 2024
Chemical
additives
are
important
components
in
commercial
microplastics
and
their
leaching
behaviour
has
been
widely
studied.
However,
little
is
known
about
the
potential
effect
of
on
adsorption/desorption
pollutants
subsequent
role
as
vectors
for
pollutant
transport
environment.
In
this
study,
two
types
polyvinyl
chloride
(PVC
Nature Communications,
Год журнала:
2025,
Номер
16(1)
Опубликована: Янв. 15, 2025
Abstract
The
rapid
increase
of
novel
per-
and
polyfluoroalkyl
substances
(PFAS)
raises
concerns,
while
their
identification
remains
challenging.
Here,
we
develop
a
two-layer
homolog
network
approach
for
PFAS
nontarget
screening
using
mass
spectrometry.
first
layer
constructs
networks
between
homologs,
with
evaluation
showing
that
it
filters
94%
false
candidates.
second
builds
classes
to
expedite
the
PFAS.
We
detected
94
in
twelve
waterproof
products
two
related
industrial
sludges,
including
36
not
previously
reported
any
sample.
A
local
dataset
is
constructed
retrospective
analysis
by
re-analyzing
our
previous
samples,
revealing
fifteen
samples
collected
2005.
retrieval
public
database
MassIVE
uncovers
from
seven
countries.
reveal
historic
global
presence
PFAS,
providing
guidance
management
policy-making
concerning
persistent
chemicals.
Animals,
Год журнала:
2024,
Номер
14(2), С. 222 - 222
Опубликована: Янв. 10, 2024
In
recent
years,
bisphenol
AF
(BPAF)
in
aquatic
environments
has
drawn
attention
to
its
ecological
risks.
This
study
aims
investigate
the
toxic
effects
of
BPAF
(188.33
μg/L)
exposure
for
30
days
on
female
marine
medaka
(Oryzias
melastigma).
On
10th
and
30th
day
exposure,
toxicity
was
evaluated
using
histological
analysis
liver
ovaries
transcription
levels
genes
related
antioxidant
system,
immune
hypothalamic-pituitary-gonadal
(HPG)
axis.
Findings
revealed
that
(1)
caused
vacuolation,
karyopyknosis
karyolysis
medaka,
impact
augmented
with
duration;
(2)
10
facilitated
growth
maturation
primary
ova,
this
had
a
comparatively
inhibitory
effect
after
days;
(3)
resulted
biphasic
regulation
transcriptional
abundance
involved
inflammatory
response
(e.g.,
il-8,
cat),
an
initial
up-regulation
followed
by
down-regulation.
Additionally,
it
disrupted
pattern
HPG
axis-related
3βhsd,
arα).
conclusion,
188.33
μg/L
can
alter
expression
functionally
genes,
impair
structural
integrity
organisms,
pose
threat
their
overall
health.
Biology,
Год журнала:
2023,
Номер
12(6), С. 798 - 798
Опубликована: Май 31, 2023
The
sea
cucumber,
Apostichopus
japonicus,
is
a
marine
benthic
organism
that
feeds
on
small
particulate
matter
and
easily
affected
by
pollutants.
Bisphenol
A
(BPA,
4,4'-isopropylidenediphenol)
has
been
identified
as
an
endocrine
disruptor.
It
ubiquitously
detectable
in
oceans
affects
variety
of
animals.
functions
estrogen
analog
typically
causes
reproductive
toxicity
interfering
with
the
system.
To
comparatively
analyze
effects
estradiol
(E2)
BPA
cucumbers,
we
G
protein-coupled
receptor
1
(GPER1)
A.
japonicus
investigated
its
reproduction.
results
showed
E2
exposure
activated
AjGPER1,
thereby
mediating
mitogen-activated
protein
kinase
signaling
pathways.
High-level
expression
AjGPER1
ovarian
tissue
was
confirmed
qPCR.
Furthermore,
metabolic
changes
were
induced
100
nM
(22.83
μg/L)
tissue,
leading
to
notable
increase
activities
trehalase
phosphofructokinase.
Overall,
our
findings
suggest
directly
cucumber
reproduction
disrupting
metabolism,
suggesting
pollutants
pose
threat
conservation
resources.
