Water,
Journal Year:
2024,
Volume and Issue:
16(23), P. 3409 - 3409
Published: Nov. 27, 2024
Parabens
are
recognized
as
emerging
contaminants.
Used
in
the
pharmaceutical
and
cosmetic
industries,
they
present
significant
ecological
risks
to
aquatic
ecosystems.
This
study
evaluated
effects
of
two
parabens—methyl
4-hydroxybenzoate
(methylparaben)
propyl
(propylparaben)—both
individually
a
mixture
on
daphnids.
Through
series
controlled
exposure
experiments,
phenotypic
endpoints,
including
mortality,
feeding
behaviour,
enzymatic
activity,
were
measured.
The
results
demonstrate
that
paraben
methyl
exhibit
greater
toxic
potential
compared
alone.
We
observed
dose-dependent
impact
key
enzymes,
indicating
metabolic
disruption.
These
findings
underscore
necessity
utilizing
model
systems
investigate
complex
interactions
cumulative
impacts
pollutant
mixtures
environments.
Furthermore,
this
provides
critical
insights
regarding
underlying
toxicity
mechanisms
parabens,
highlighting
need
for
comprehensive
water
quality
monitoring
risk
assessment
frameworks
address
challenges
posed
by
Environmental Sciences Europe,
Journal Year:
2024,
Volume and Issue:
36(1)
Published: Feb. 6, 2024
Abstract
Glyphosate
(GLY),
the
most
widely
used
herbicide
active
ingredient
(AI)
in
world,
is
frequently
detected
aquatic
environments
where
it
can
affect
non-target
organisms.
Globally,
more
than
2000
commercial
GLY-based
herbicides
(GBHs)
are
to
control
weeds.
Non-target
organisms
exposed
complex
pesticide
formulations
under
real
environmental
conditions,
but
co-formulants
contained
GBHs
classified
as
so-called
inert
and
inactive
ingredients
terms
of
their
biological
effects.
The
main
objective
this
comprehensive
review
compile
results
ecotoxicological
studies
on
side-effects
GLY,
GBHs,
formulating
agents.
Based
demonstrated
for
a
variety
plant
animal
organisms,
oxidative
stress
appears
be
major
trigger
these
adverse
effects,
affecting
integrity
DNA
other
biochemical
functions.
Furthermore,
there
evidence
impairment
various
physiological
behavioral
Adverse
effects
GLY
have
been
observed
even
at
very
low
concentrations.
There
also
differences
sensitivity
tested,
with
similar
lifestyles,
habitats
or
identical
taxa.
typically
investigate
short-term
single
exposure
GLY/GBH
species,
whilst
reality
multiple
applications
together
pesticides
common
during
cropping
cycle.
Moreover,
interactions
between
GLY/GBHs
contaminants
rarely
studied.
Higher
toxicity
compared
alone
has
often
observed,
demonstrating
that
highly
toxic
own
markedly
increase
GBH
formulation.
possible
impurities
such
heavy
metals,
cause
additional
problems
environment
food
safety.
widespread
massive
use
leads
increased
hazards.
In
addition,
need
revision
risk
assessment
system
emphasized.
According
studies,
current
pollution
by
problematic
cannot
considered
environmentally
sustainable.
It
is,
therefore,
necessary
least
tighten
permitted
forms
use.
Journal of Thermal Analysis and Calorimetry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 8, 2024
Abstract
Due
to
the
serious
environmental
impacts
of
plastic
pollution,
some
conventional
plastics
have
been
replaced
with
biodegradable
alternatives.
However,
these
options
can
also
fragment
and
form
microplastics,
which
be
ingested
by
harm
various
biota.
The
standard
methods
for
quantifying
microplastics
involve
digestion
gut
or
whole
organism
using
acidic,
alkaline,
oxidative
processes.
aggressive
may
destroy
leading
erroneous
results.
Therefore,
in
this
study,
we
employed
thermal
analysis
methods,
specifically
differential
scanning
calorimetry
(DSC)
thermogravimetry
(TG),
quantify
ingestion
poly-3-hydroxybutyrate
(P3HB),
a
microplastic,
freshwater
crustacean,
Daphnia
magna
.
During
chronic
experiments,
analysed
organisms
exposed
P3HB
sizes
smaller
than
125
63
μm,
at
concentrations
ranging
from
1.56–25
mg
L
−1
DSC
identified
an
endothermic
peak
associated
melting
semicrystalline
P3HB,
its
enthalpies
were
utilised
compute
number/mass
D.
Notably,
shifts
points
suggested
that
higher
induced
particle
agglomeration,
agglomerates
could
not
penetrate
deeply
into
organism.
TG
approach
involved
subtracting
mass
loss
between
200
400
°C
specimens
suspensions
controls
without
exposure.
Both
provided
comparable
data,
revealing
that,
depending
on
size,
individual
up
10%
their
body
mass.
Our
findings
indicate
both
effectively
detect
(and
potentially
other
fragments),
demonstrating
better
sensitivity.
While
did
enable
us
calculate
level
determination
quantification,
able
demonstrate
only
one
specimen
lowest
suspension
concentration.
This
indicates
μm
fraction
approximately
3
μg
whereas
those
around
4
P3HB.
introduced
expand
possibilities
detecting
probably
nanoplastics,
zooplankton
possibly
species.
Freshwater Biology,
Journal Year:
2024,
Volume and Issue:
69(4), P. 461 - 476
Published: Feb. 11, 2024
Abstract
Micro/nanoplastics
pose
a
new
environmental
threat
to
aquatic
ecosystems.
The
model
organism
Daphnia
spp.
has
been
used
in
many
exposure
studies
investigate
the
effect
of
micro/nanoplastics
on
fitness.
However,
owing
variation
experimental
approaches,
it
is
difficult
compare
findings.
aim
our
study
was
systematically
review
research
fitness,
identify
gaps
and
offer
recommendations
for
future
studies.
We
synthesised
121
extracted
data
numerous
categories
concerning
design,
micro/nanoplastic
characteristics
ecotoxicological
endpoints.
32
were
included
meta‐analysis
reproduction.
Existing
exhibits
several
limitations.
majority
experiments
have
conducted
exclusively
using
magna
,
neglecting
other
species
leading
an
inherent
bias
representation
broader
genus.
Then,
these
predominantly
single
genotype
disregarding
potential
clonal
variation.
In
addition,
most
investigated
only
generation,
although
limited
number
multigenerational
available
suggest
increasing
toxicity
trend
with
subsequent
generations,
even
if
there
no
impact
F
0
generation.
Regarding
types
plastics
tested,
focused
pristine,
spherical
microplastic
particles,
primarily
composed
polystyrene,
particle
sizes
<100
μm,
at
concentrations
>0.1
mg/L.
This
narrow
focus
limits
applicability
findings
environmentally
relevant
scenarios,
where
can
take
various
shapes
composition,
undergo
aging
usually
occur
lower
than
those
reviewed.
primary
response
variable
assessed
mortality,
followed
by
variations
reproductive
traits
or
body
size.
focusing
unveiled
consistent
adverse
influence
production
offspring
.
Future
should
test
micro/nanoplastics,
smaller,
lake‐inhabiting
species,
incorporate
extend
scope
include
multiple
generations.
Moreover,
recognising
complexity
real‐world
we
recommend
integrating
assessments
effects
stressors.
By
simulating
such
conditions,
yield
insights
that
better
mirror
complexities
ecological
systems
provide
more
accurate
consequences
pollution.
Deleted Journal,
Journal Year:
2024,
Volume and Issue:
44(5), P. 851 - 864
Published: May 23, 2024
Environmental
toxicology
is
a
diverse
scientific
discipline
that
highly
influential
in
the
field
of
toxicology,
environmental
health,
and
public
policy.
However,
there
paucity
data
clearly
explains
how
exposures
health
outcomes
African
communities
are
related.
In
order
to
highlight
current
accomplishments
identify
important
research
gaps,
we
evaluated
literature
on
populations
during
previous
10
years,
as
well
including
both
genomic
components.
The
respiratory
cardiovascular
endpoints
associated
with
air
pollution
were
comparable
those
from
other
countries.
Dust
some
occupational
only
sources
found
Africa
regions
limited
resources.
Literature
detailing
detrimental
effects
pesticides,
metals,
food
mold
provided
context
exclusive
Africa.
There
have
been
relatively
few
studies
phenols,
flame
retardants,
PFASs,
phthalates.
These
findings
necessity
concentrating
more
potential
threats
human
posed
by
environment
chemicals,
better
integrating
genetic
factors
into
conducted
Frontiers in Marine Science,
Journal Year:
2024,
Volume and Issue:
11
Published: Feb. 5, 2024
Polystyrene
is
widely
used
in
disposable
products
and
now
a
ubiquitous
plastic
pollutant
aquatic
environments,
where
it
degrades
into
smaller
particles
that
leach
potentially
toxic
chemicals.
However,
knowledge
regarding
the
impacts
of
leachates
remains
limited.
This
study
investigates
lethal
nonlethal
effects
polystyrene
leachate
on
two
ecologically
significant
organisms,
Daphnia
magna
(water
flea)
Artemia
salina
(brine
shrimp).
were
prepared
seawater,
freshwater,
sterile,
pure
water
by
incubating
material
each
media
under
natural
conditions
for
six
months.
D.
A.
exposed
to
varying
concentrations
controlled
laboratory
conditions,
monitoring
their
survival,
as
well
measuring
reactive
oxygen
species
antioxidant
responses
superoxide
dismutase
catalase
activity.
The
data
show
was
more
significantly
affected
with
higher
mortality
observed
at
lower
concentrations,
linked
seawater
enhancing
leaching
additives.
Moreover,
non-lethal
antioxidative
maintained
homeostasis
both
organisms.
Considering
current
reported
microplastic
aquatics
adequate
response,
from
does
not
pose
severe
threat
these
Nevertheless,
hydrological
characteristics
waterbodies
may
cause
hotspots,
which
could
concentrate
plastics
thus
leachates,
necessitating
action
reduce
pollution
level
avoid
future
surges.
highlights
ecological
significance
pollution,
emphasizing
need
comprehensive
regulatory
measures
development
sustainable
alternatives
polystyrene-based
products.
distinct
imply
impact
varies
among
species,
further
research
elucidate
broader
consequences.
Understanding
how
affects
keystone
provides
crucial
insights
overall
implications
ecosystems.