Environmental Science & Technology,
Год журнала:
2024,
Номер
unknown
Опубликована: Фев. 22, 2024
Despite
the
increasing
health
risks
shown
by
continuous
detection
of
organophosphate
esters
(OPEs)
in
biota
recent
years,
information
on
occurrence
and
potential
OPEs
marine
mammals
remains
limited.
This
study
conducted
first
investigation
into
body
burdens
10
traditional
(tOPEs)
five
emerging
(eOPEs)
cetacean
species
(n
=
84)
from
northern
South
China
Sea
(NSCS)
during
2005–2021.
All
OPEs,
except
for
2-ethylhexyl
diphenyl
phosphate
(EHDPHP),
were
detected
these
cetaceans,
indicating
their
widespread
NSCS.
Although
levels
∑10tOPEs
humpback
dolphins
remained
stable
2005
to
2021,
concentrations
∑5eOPEs
showed
a
significant
increase,
suggesting
growing
demand
new-generation
China.
Dolphins
proximity
urban
regions
generally
exhibited
higher
OPE
than
those
rural
areas,
mirroring
environmental
trends
occurring
this
area.
congeners,
EHDPHP,
maternal
transfer
ratio
>1,
that
dolphin
placenta
may
not
be
an
efficient
barrier
OPEs.
The
observed
correlations
between
hormones
(triiodothyronine,
thyroxine,
testosterone)
indicated
exposures
might
have
endocrine
disruption
effects
population.
Journal of King Saud University - Science,
Год журнала:
2022,
Номер
34(4), С. 102006 - 102006
Опубликована: Апрель 1, 2022
Microplastics
(MPs),
an
emerging
ubiquitous
pollutant
in
the
aquatic
ecosystem,
pose
serious
health
concerns
to
survival
of
fauna,
especially
top
predators
(e.g.,
mammals).
It
is
challenging
investigate
toxicological
profile
MPs
mammals
due
their
diverse
behaviour,
physico-chemical
properties,
and
other
technical
ethical
issues.
This
study
reviewed
current
burden
occurrence
various
tissues
mammals,
its
composition
(heavy
metals,
pesticides,
pathogens),
possible
effects
on
individual
population
levels
mammals.
Aquatic
are
constantly
exposed
directly
indirectly
via
food-web.
The
a
wide
range
toxic
heavy
pathogens
added
during
manufacturing
or
adsorbed
from
surrounding
environments
bioaccumulated
for
years.
Due
long
life-span
body
masses,
these
pollutants
can
cause
several
issues
that
drastically
reduce
size
ultimately
extinction,
vulnerable
populations.
Still
today
presence
deep
largely
remains
unknown
We
therefore
suggest
global
assessment
risks
associated
with
consumption
by
habitats.
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(9), С. 4346 - 4356
Опубликована: Фев. 21, 2024
Ocean
disposal
of
industrial
waste
from
technical
DDT
[mainly
1,1′-(2,2,2-trichloroethane-1,1-diyl)bis(4-chlorobenzene),
or
4,4′-DDT]
manufacture
occurred
historically
in
the
Southern
California
Bight.
However,
paucity
historical
records
highlights
uncertainties
as
to
mode,
location,
and
timing
ongoing
ecological
effects
these
wastes.
This
study
combines
sampling,
chemical
analysis,
numerical
modeling
deep
San
Pedro
Basin
sediments
revealing
substantial
contamination
that
extends
at
least
25
km
mainland.
These
findings
narrate
bulk
offshore
peaked
1950s,
prior
onset
formal
regulations;
was
agnostic
later-designated
sites;
has
experienced
sluggish
transformation.
Our
further
indicate
an
attenuating
secondary
source
for
daughter
product,
1-chloro-4-[2,2-dichloro-1-(4-chlorophenyl)ethenyl]benzene
(4,4′-DDE),
which
still
deposits
into
sediments.
While
demonstrating
severity
region,
define
burial
potential
wastes
inform
past,
present,
future
is
needed
understand
predict
consequences.
work
also
points
firmly
bulk,
not
containerized,
alternative
contents
collocated
waste.
Environmental Science & Technology,
Год журнала:
2021,
Номер
55(20), С. 13961 - 13970
Опубликована: Окт. 1, 2021
Citrate
acid
esters
(CAEs)
have
been
proposed
as
a
class
of
phthalate
substitute
plasticizers;
however,
information
on
their
occurrence
in
indoor
environments
is
rare.
By
using
liquid
chromatography
coupled
with
quadrupole-Orbitrap
mass
spectrometer,
we
developed
an
integrated
strategy
that
can
be
applied
for
target,
suspect,
and
characteristic
fragment-dependent
screening
CAEs.
In
n
=
50
dust
samples
collected
from
Nanjing
City
(China),
three
CAEs,
namely,
acetyl
tributyl
citrate
(ATBC;
mean:
412,000
ng/g),
(TBC,
11,600
triethyl
(TEC,
10,900
exhibited
the
greatest
contamination
levels.
Total
concentrations
CAEs
(∑8CAEs)
were
statistically
significantly
(p
<
0.01)
greater
than
those
common
organophosphate
triesters
(OPTEs),
ubiquitous
contaminants
dust.
Suspect
(m/z
111.0078
([C5H3O3]+)
m/z
129.0181
([C5H5O4]+))
further
conducted
same
batch
samples.
We
tentatively
identified
six
novel
most
frequent
abundant
CAE
was
fully
aconitate
(TBA).
Statistically
significant
correlation
relationships
observed
levels
between
TBA
vs
ATBC
(r
0.650;
p
TBC
0.384;
0.01),
suggesting
similar
sources
Critical Reviews in Environmental Science and Technology,
Год журнала:
2020,
Номер
51(23), С. 2824 - 2871
Опубликована: Авг. 17, 2020
As
apex
predators,
marine
mammals
play
a
key
role
in
maintaining
community
structure
and
functioning
ecosystems.
Hence,
decline
mammal
populations
may
have
negative
effects
on
the
ecosystem
function
services.
The
discharge
of
anthropogenic
chemicals
particles
(micropollutants)
into
environment
threatens
health
mammals.
Traditional
approaches
for
assessing
impact
micropollutants
are
limited
by
complexity
(e.g.,
low
concentrations,
unknown
contaminants,
transformation
products,
mixture
effect)
complex
physiology,
life
history,
multiple
stressors,
logistical
challenges)
environment.
Recently
developed
(bio)analytical
tools
that
can
integrate
chemical
biological
assessment
such
as
non-target
suspect
screening,
direct
effect
analysis,
multiomics
metabolomics,
lipidomics,
proteomics,
transcriptomics)
offer
critical
insights
(i)
risks
'known'
'unknown'
mammals,
(ii)
link
between
exposure
population
effects,
(iii)
identification
priority
micropollutants.
This
review
highlights
challenges
current
progress
risk
posed
to
A
tired
integrated
chemical-ecological-biological
framework
from
research
practices
is
offered
effective
micropollutant
Environmental Science & Technology,
Год журнала:
2018,
Номер
53(2), С. 614 - 624
Опубликована: Дек. 21, 2018
The
performance
of
silicon
wristband
passive
samplers
(WB),
combined
with
comprehensive
two-dimensional
gas-chromatography/time-of-flight
mass-spectrometry
(GC
×
GC/ToF–MS),
for
the
analysis
urban
derived
pollutants
in
personal
environment
was
evaluated.
Cumulative
5-day
exposure
samples
from
27
individuals
areas
different
geographical/socioeconomic
characteristics
within
Santiago
Metropolitan
Region
(Chile)
were
collected
during
winter
and
summer
(2016–2017).
Samples
extracted
without
cleanup/fractionation
analyzed
using
targeted
nontargeted
methods.
quantified
semivolatile
organic
compounds
(SVOCs,
n
=
33)
(targeted
analysis),
tentatively
identified
features
(n
595–1011)
(nontargeted
analysis)
classified
according
to
their
use/source.
Seasonal
differences
observed
analysis,
while
seasonal
spatial
analysis.
Higher
concentrations
combustion
products
winter,
higher
consumer
found
summer.
Spatial
hierarchical
clustering
data,
distinct
clusters
corresponding
specific
subregions
area.
Results
this
study
provide
distributions
an
area
establish
utility
linking
WB
as
a
tool
identify
prioritize
new
exposures
contaminants
at
local/community
level.
Environment International,
Год журнала:
2022,
Номер
171, С. 107679 - 107679
Опубликована: Дек. 6, 2022
The
bans
on
bisphenol
A
(BPA)
have
facilitated
the
widespread
use
of
BPA
alternatives
and
shifted
environmental
contamination
profiles
bisphenols
(BPs).
However,
continued
reports
toxicities
emerging
raised
questions
about
whether
shifting
are
contributed
to
mitigate
BPs-mediated
endocrine-disruption
effects
(EDEs).
Cetaceans
commonly
used
as
ideal
sentinel
species
for
monitoring
marine
pollutants
concern
determining
potential
health
effects,
but
far
less
is
known
BP
loads
EDEs
in
cetaceans.
Here
we
measured
hepatic
concentrations
six
BPs
eight
stranded
cetacean
(n
=
41)
South
China
Sea,
between
2007
2020.
large-bodied
whales
generally
showed
higher
∑BPs
than
small-bodied
dolphins.
In
Indo-Pacific
finless
porpoises
(Neophocaena
phocaenoides)
33),
first
increased
(2007–2014)
then
decreased
(2014–2020),
while
∑BPAlternatives
from
It
appears
that
gradually
replaced
BPA,
probably
due
BPA-related
China.
order
examine
hormone
disruption
its
porpoises,
five
blubber
hormones
(cortisol,
progesterone,
testosterone,
triiodothyronine
tetraiodothyronine),
which
proven
be
validated
endocrine
biomarkers,
were
21
samples.
Tetraiodothyronine,
cortisol
significantly
positively
correlated
with
alternatives,
suggesting
interference
homeostasis
may
continue
occur
despite
changes
porpoises.
This
investigation
relationship
cetaceans
represents
a
substantial
advance
understanding
Environmental Science & Technology Letters,
Год журнала:
2024,
Номер
11(5), С. 479 - 484
Опубликована: Май 6, 2024
The
recent
rediscovery
of
offshore
DDT
waste
dumping
in
the
Southern
California
Bight
(SCB)
has
led
to
questions
about
extent
and
type
pollution
deep
ocean
environments.
We
used
a
nontargeted
analysis
identify
halogenated
organic
compounds
(HOCs),
including
DDT+,
sediment
San
Pedro
Basin.
Additionally,
we
examined
chemical
profiles
biota
inhabiting
SCB
assess
bioavailability
DDT+
HOCs
food
web.
detected
49
across
all
samples,
15
10
biota.
Compounds
included
tris(4-chlorophenyl)methane
(TCPM)
its
isomers
three
unknown
DDT-related
previously
identified
marine
mammals.
No
clear
trends
were
regarding
distribution
sediments.
High
body
burdens
found
irrespective
collection
location,
indicating
widespread
contamination
SCB.
TCPMs
samples
except
single
surface
species,
that
may
be
source
This
study
demonstrates
larger
suite
is
critical
trace
