Asian Journal of Chemistry,
Год журнала:
2022,
Номер
34(12), С. 3037 - 3047
Опубликована: Янв. 1, 2022
The
importance
of
a
clean
environment
is
recognized
as
“pillar”
sustainable
development.
There
is,
however,
serious
public
health
threat
associated
with
heavy
metal
releases
into
the
environment.
Aquatic
environments
in
Tamil
Nadu
state
India
lack
metals
monitoring
data.
From
year
2008
to
2022,
research
articles
were
assessed
that
focused
at
concentrations
freshwater
and
marine
ecosystems.
It
has
been
shown
elevated
levels
sediments
aquatic
ecosystems
contribute
an
increase
their
abundance,
which
may
further
enter
food
chain
through
bioaccumulation.
In
addition,
intensifying
human
exploitation
South
East
Coastal
region
(SEC)
industries,
tourism,
aquaculture
recreation
complicates
situation
by
providing
ever-changing
sources
contamination.
As
result
analyzing
all
metals,
Cd
biota
collected
from
ocean
higher.
Rivers
lakes
have
increased
such
Zn,
Cu
Pb
localized
anthropogenic
activities.
accordance
sediment
guidelines
risk
assessments,
most
exceeded
permissible
limits.
highly
recommended
more
studies
are
conducted
monitor
organisms
urban
rivers,
future,
extreme
both
for
environmental
economics.
By
identifying
pollutants
implementing
strict
policies
abate
pollution,
local
governments
can
implement
better
control
measures
decrease
pollution
levels.
Processes,
Год журнала:
2024,
Номер
12(2), С. 311 - 311
Опубликована: Фев. 1, 2024
Intertidal
sediments
are
rich
in
biological
resources,
which
important
for
material
circulation
and
energy
exchange.
Meanwhile,
these
areas
can
be
treated
as
sinks
well
sources
of
coastal
heavy
metal
pollutants.
Due
to
the
influence
tide,
intertidal
a
state
periodic
flooding
exposure,
environmental
factors
such
dissolved
oxygen,
salinity
overlying
water
pressure
changeable.
Heavy
metals
prone
migration
transformation
with
dynamic
effects
tidal
changes
environment
factors,
increase
bioavailability
metals.
In
this
review,
characteristics
distribution
described;
behavior
its
influencing
under
conditions
analyzed;
mechanisms
metal’s
zone
summarized.
Moreover,
bioaccumulation
by
organisms
remediation
techniques
discussed.
Therefore,
review
systematically
summarizes
states
existence,
transport
mechanisms,
fate
sediment,
fills
research
gap
cycling
zone,
provides
theoretical
basis
control
pollution.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Авг. 12, 2024
Marine
pollution
caused
by
heavy
metals
has
emerged
as
a
significant
environmental
concern,
garnering
increased
attention
in
recent
years.
The
accumulation
of
the
tissues
marine
organisms
poses
substantial
threats
to
both
ecosystems
and
human
populations
that
rely
on
seafood
primary
food
source.
Fish
crustaceans
are
effective
biomonitors
for
assessing
metal
contamination
aquatic
environments.
In
this
study,
we
determined
concentrations
several
metals,
including
cadmium
(Cd),
lead
(Pb),
nickel
(Ni),
mercury
(Hg),
tin
(Sn),
four
fish
species
(Mugil
cephalus,
Mugil
capito,
L.
aurata,
Morone
labrax)
five
crustacean
(S.
rivulatus,
Cerastoderma
glaucum,
Paratapes
undulatus,
R.
decussatus,
Callinectes
sapidus,
Metapenaeus
Stebbingi)
from
Temsah
Lake
during
winter
summer
seasons.
To
evaluate
potential
ecological
health
risks
associated
with
consuming
these
species,
calculated
index
(MPI),
weekly
intake
(EWI),
target
hazard
quotient
(THQ),
carcinogenic
risk
(CR)
values.
results
revealed
noticeable
increase
levels
compared
studied
samples.
Moreover,
concentration
muscles
generally
exceeded
those
liver
gills.
MPI
values
indicated
labrax
exhibited
highest
winter,
while
aurata
showed
summer.
cephalus
demonstrated
lowest
EWI
were
found
be
lower
than
corresponding
tolerable
(TWI)
Additionally,
under
average
exposure
conditions,
THQ
HI
data
below
one
most
study
area.
CR
investigated
acceptable
levels.
Therefore,
suggests
within
lake
does
not
present
any
hazards
consumers.
Aquaculture Journal,
Год журнала:
2023,
Номер
3(2), С. 90 - 106
Опубликована: Апрель 13, 2023
The
disposal
of
treated
and
untreated
sewage
near
shellfish
harvesting
areas
is
a
global
concern.
Discharged
may
be
contaminated
with
enteric
viruses
present
in
human
faeces.
Bivalve
molluscs,
turn,
act
as
vectors
for
through
bioaccumulation
retention
these
during
the
filter-feeding
process,
resulting
outbreaks
infections
due
to
consumption
shellfish.
This
review
was
conducted
using
peer-reviewed
articles
published
from
2012
until
September
2022,
obtained
online
databases
such
Google
Scholar,
Scopus,
Science
Direct,
highlighting
challenges
that
industry
faced
concerning
pollutants
ending
up
production
areas.
Developed
countries
have
made
some
advancements
by
upgrading
infrastructures,
which
reduced
viral
loads
sewage.
However,
it
difficult
measure
significance
improvements,
there
are
no
regulations
place
stipulate
permissible
limits
viruses.
In
most
developing
countries,
including
South
Africa,
lack
effective
management
plans
virus
monitoring
findings
this
study
indicated
need
extensive
research
on
origin
viruses,
their
interactions
other
organisms
within
marine
ecosystem,
quantification
Saldanha
Bay
harbour,
development
currently
non-existent.
Microplastic
pollution
poses
a
significant
threat
to
coastal
ecosystems,
prompting
an
in-depth
investigation
into
its
seasonal
fluctuations
and
ecological
impacts.
This
study
examines
microplastics
in
Cuddalore's
waters
sediments
across
four
seasons.
Results
show
varying
microplastic
concentrations,
peaking
during
the
monsoon
pre-monsoon
seasons,
likely
influenced
by
rainfall
variability.
Fibers
dominate
both
water
(69–100%)
sediment
samples
(66–92%),
with
polyethylene
terephthalate
as
predominant
polymer
types
water.
Sediments
exhibit
more
diverse
distribution,
polypropylene
prevalent.
Pollution
load
index
indicates
low
(1.0–1.4),
while
hazard
potential
risk
indices
raise
concerns,
reaching
values
of
108930
1125,
respectively.
underscores
urgency
implementing
effective
management
strategies
safeguard
tropical
ecosystems
from
pollution.
The
highlights
complex
interplay
between
dynamics,
variability,
types,
levels,
emphasizing
need
for
proactive
environmental
measures.
