The
spatial
distribution
of
heavy
metals
in
the
sediments
(Cd,
Co,
Cu,
Pb,
Hg,
Ni,
Zn,
Fe,
and
Cr)
Eastern
coastline
India
was
evaluated.
sampling
done
from
61
sites
across
1400
km
stretch
Bay
Bengal
Arabian
Sea
coastline.
metal
concentration
higher
for
Hg
(0.08
µg/gm)
Cd
(3.44
than
other
trace
Utkal
Coromandel
metals,
Cr
were
under
concentrations
proposed
by
SQGs
are
included
categories
<
TEL,
ELR,
EMR
do
not
exceed
>
PEL
categories.
fractionation
carried
out
considering
mean
effects
range
median,
probable
effect
level,
toxic
ecological
risk,
pollution
load
modified
contaminate.
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(33), P. 14618 - 14628
Published: Aug. 9, 2024
Bivalves
are
often
employed
for
biomonitoring
contaminants
in
marine
environments;
however,
these
large-scale
programs,
unavoidably,
using
multiple
species
presents
a
significant
challenge.
Interspecies
differences
contaminant
bioaccumulation
can
complicate
data
interpretation,
and
direct
comparisons
among
may
result
misleading
conclusions.
Here,
we
propose
robust
framework
based
on
toxicokinetic
measurements
that
accounts
interspecies
bioaccumulation.
Specifically,
via
recently
developed
double
stable
isotope
tracer
technique,
determined
the
toxicokinetics
of
cadmium
(Cd)─a
metal
known
its
high
concentrations
bivalves
variability─in
six
widespread
bivalve
including
mussels
(Perna
viridis,
Mytilus
unguiculatus,
galloprovincialis)
oysters
(Magallana
gigas,
Magallana
hongkongensis,
angulata).
Results
show
generally
have
higher
Cd
uptake
rate
constants
(ku:
1.18–3.09
L
g–1
d–1)
lower
elimination
(ke:
0.008–0.017
than
0.21–0.64
d–1;
ke:
0.018–0.037
d–1).
The
tissue
predominantly
due
to
rather
elimination.
Utilizing
parameters
back-calculate
seawater,
found
ranking
contamination
levels
at
sites
markedly
differs
from
those
concentrations.
We
this
approach
will
be
useful
interpreting
past
future
programs.
Antibiotics,
Journal Year:
2023,
Volume and Issue:
12(9), P. 1379 - 1379
Published: Aug. 29, 2023
Antibiotics
and
heavy
metals
have
caused
serious
contamination
of
the
environment
even
resulted
in
public
health
concerns.
It
has
therefore
become
more
urgent
to
adopt
a
sustainable
approach
combating
these
polluted
environments.
In
this
paper,
we
investigated
microbial
community
marine
sediment
samples
after
255
days
enrichment
culture
under
Cu
(II)
lincomycin
stress
ZC255
was
most
resistant
strain
obtained.
The
16S
rRNA
gene
sequence
confirmed
that
it
belonged
genus
Rossellomorea.
Strain
12
kinds
antibiotics,
had
superior
tolerance
(II),
Pb
Ni
Zn
Cr
(III),
Cd
(II).
Moreover,
exhibits
strong
bioremoval
ability
lincomycin.
removal
efficiency
can
achieve
651
mg/g
biomass
32.5
biomass,
respectively.
promising
isolate
for
pollution
bioremediation
applications.
Foods,
Journal Year:
2024,
Volume and Issue:
13(4), P. 552 - 552
Published: Feb. 11, 2024
Bivalves
can
concentrate
biological
and
chemical
pollutants,
causing
foodborne
outbreaks
whose
occurrence
is
increasing,
due
to
climatic
anthropic
factors
that
are
difficult
reverse,
hence
the
need
for
improved
surveillance.
This
study
aimed
evaluate
hygienic
qualities
of
bivalves
sampled
along
production
distribution
chain
in
Sicily
collect
useful
data
consumer
safety.
Bacteriological
molecular
analyses
were
performed
on
254
samples
detection
enteropathogenic
Vibrio,
Arcobacter
spp.,
Aeromonas
Salmonella
beta-glucuronidase-positive
Escherichia
coli.
A
total
96
out
samples,
collected
areas,
processed
algal
biotoxins
heavy
metals
detection.
Bacterial
contaminations
also
assessed
21
water
from
aquaculture
implants.
Vibrio
hydrophila,
coli
detected
106/254,
79/254,
12/254,
16/254,
95/254
molluscs,
respectively.
10/96
tested
positive
biotoxins,
under
legal
limit.
V.
alginolyticus,
A.
butzleri,
E.
5,
3,
3
Alexandrium
minutum,
Dinophysis
acuminata,
Lingulodinium
polyedra,
Pseudonitzschia
spp.
with
biotoxin-containing
molluscs.
Traces
yessotoxins
molluscs
containing
corresponding
producing
algae.
Despite
strict
regulation
by
European
Commission
over
shellfish
supply
monitoring,
our
highlighted
efficiency
improvement.
