Frontiers in Marine Science,
Journal Year:
2025,
Volume and Issue:
12
Published: Feb. 3, 2025
Introduction
Steroid
hormones
are
widely
present
in
the
environment
and
pose
potential
risks
to
organisms.
Previous
studies
of
steroid
have
predominantly
focused
on
terrestrial
environments,
with
few
conducted
marine
environments.
Methods
In
this
study,
we
analyzed
occurrence
44
seawater,
sediment,
organisms
collected
from
coast
Guangdong,
China.
Results
Total
concentration
ranged
0.11
30.15
ng/L
ND
8.58
ng/g
(dw)
sediments,
80.52
(ww)
The
highest
average
concentrations
detected
were
progestins,
estrogens,
glucocorticoids,
respectively.
hormone
seawater
significantly
higher
during
dry
season
than
rainy
season.
Guanghai
Bay,
Pearl
River
Estuary,
Daya
Zhelin
Bay
those
other
bays.
Discussion
Negative
correlations
observed
between
salinity,
indicating
a
continental
input.
Risk
assessment
results
indicated
that
17α-ethinylestradiol
posed
high
risks.
Nevertheless,
consumption
seafood
does
not
significant
health
risk
humans.
To
best
our
knowledge,
is
first
study
concurrently
analyze
androgens,
estrogens
water,
diverse
Liquids,
Journal Year:
2022,
Volume and Issue:
2(3), P. 72 - 84
Published: June 24, 2022
Residence
time
of
water
flow
is
an
important
factor
in
subsurface
media
to
determine
the
fate
environmental
toxins
and
metabolic
rates
ecotone
between
surface
stream
groundwater.
Both
numerical
lab-based
experimentation
can
be
used
estimate
residence
time.
However,
due
high
variability
material
composition
media,
a
pragmatic
model
set
up
laboratory
trace
particles
strenuous.
Nevertheless,
selection
inclusion
input
parameters,
execution
simulation,
generation
results
as
well
post-processing
outcomes
simulation
take
considerable
amount
To
address
these
challenges,
automated
particle
tracing
method
developed
where
model,
i.e.,
reactive
transport
code,
MIN3P,
MATLAB
code
for
saturated
porous
used.
A
rectangular
domain
considering
fully
under
steady-state
conditions
MIN3P.
Streamlines
times
are
computed
with
variety
seeding
locations
covering
whole
surface.
Sensitivity
analysis
performed
over
varying
spatial
discretization
computational
steps.
Moreover,
comparative
study
Paraview
undertaken
validate
(R2
=
0.997).
The
outcome
process
illustrates
that
highly
dependent
on
accuracy
integration
method,
value
step,
∆t,
discretization,
stopping
criterion
streamlines,
location,
seed
points.
beneficial
obtaining
insights
into
dynamics
setup
instead
laboratory-based
computationally
efficient
manner.
Frontiers in Marine Science,
Journal Year:
2025,
Volume and Issue:
12
Published: Feb. 3, 2025
Introduction
Steroid
hormones
are
widely
present
in
the
environment
and
pose
potential
risks
to
organisms.
Previous
studies
of
steroid
have
predominantly
focused
on
terrestrial
environments,
with
few
conducted
marine
environments.
Methods
In
this
study,
we
analyzed
occurrence
44
seawater,
sediment,
organisms
collected
from
coast
Guangdong,
China.
Results
Total
concentration
ranged
0.11
30.15
ng/L
ND
8.58
ng/g
(dw)
sediments,
80.52
(ww)
The
highest
average
concentrations
detected
were
progestins,
estrogens,
glucocorticoids,
respectively.
hormone
seawater
significantly
higher
during
dry
season
than
rainy
season.
Guanghai
Bay,
Pearl
River
Estuary,
Daya
Zhelin
Bay
those
other
bays.
Discussion
Negative
correlations
observed
between
salinity,
indicating
a
continental
input.
Risk
assessment
results
indicated
that
17α-ethinylestradiol
posed
high
risks.
Nevertheless,
consumption
seafood
does
not
significant
health
risk
humans.
To
best
our
knowledge,
is
first
study
concurrently
analyze
androgens,
estrogens
water,
diverse
