Frontiers in Environmental Chemistry,
Journal Year:
2024,
Volume and Issue:
5
Published: Dec. 17, 2024
One
significant
way
that
microplastics
(MPs)
are
transported
from
the
air
into
soil
and
water
is
through
deposition.
Nevertheless,
little
known
about
contributing
causes
geographical
distribution
of
MPs
in
urban
The
present
study
determined
spatial
their
potential
ecological
risk
Malda
City,
West
Bengal,
India
(from
December
2023
to
February
2024).
average
deposition
fluxes
were
ranging
122.25
±
76.96
387
89.23
n
m
−2
d
−1
.
Most
found
small-sized
(50–100
µm)
with
transparent
(35.51%)
white
(33.19%)
color.
dominant
chemical
compositions,
such
as
PE
(∼32%),
PVC
(∼24%),
PET
(∼20%),
case
shapes
fragments
(∼38%)
films
(∼29%)
types
found.
geographic
heterogeneity
seen
under
investigation
was
mostly
caused
by
human
activity
regions’
commercial
nature.
also
affected
rainfall
wind
speed.
may
provide
a
greater
concern,
according
early
evaluation.
According
this
study,
has
major
influence
on
source
dispersion
atmospheric
deposited
areas.
BMC Plant Biology,
Journal Year:
2024,
Volume and Issue:
24(1)
Published: Oct. 19, 2024
The
present
study
investigates
the
impact
of
varying
concentrations
PVC
microplastics
(PVC–MPs)
–
specifically
0
(no
PVC–MPs),
2,
and
4
mg
L−
1
–alongside
different
arsenic
(As)
levels
As),
150,
300
kg−
in
soil,
with
concurrent
application
copper
oxide–nanoparticles
(CuO–NPs)
at
CuO
–NPs),
25
50
µg
mL−
to
barley
(Hordeum
vulgare
L.)
plants.
This
research
primarily
aims
assess
plant
growth
biomass,
photosynthetic
pigments
gas
exchange
characteristics,
oxidative
stress
indicators,
as
well
response
various
antioxidants
(both
enzymatic
non-enzymatic)
their
relevant
genes
expression,
proline
metabolism,
AsA–GSH
cycle,
cellular
fractionation
within
findings
showed
that
increased
PVC–MPs
As
soil
significantly
reduced
pigments,
characteristics.
Additionally,
roots
shoots,
evidenced
by
elevated
malondialdehyde
(MDA),
hydrogen
peroxide
(H2O2),
electrolyte
leakage
(EL),
which
turn
stimulated
production
non-enzymatic
antioxidants,
gene
sugar
content.
Furthermore,
a
notable
increase
pigmentation
was
observed.
Conversely,
CuO–NPs
resulted
substantial
improvement
activity
along
reduction
stress.
enhanced
while
decreasing
metabolism
AsA-GSH
cycle
H.
These
outcomes
provide
new
insights
into
sustainable
agricultural
practices
offer
significant
potential
addressing
critical
challenges
heavy
metal
contamination
soils.
Polymer-Plastics Technology and Materials,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 40
Published: Nov. 1, 2024
One
of
the
polymers
with
biggest
production
volume
is
poly(vinyl
chloride)
(PVC)
considering
their
versatility,
durability,
lightweight,
as
well
low
cost
production,
plastics
have
recently
become
an
essential
part
everyone's
daily
life.
However,
increased
and
usage
poses
significant
environmental
problems
because
incomplete
utilization,
a
lengthy
biodegradation
period,
detrimental
effects
on
living
things.
This
study
examines
latest
findings
in
PVC
research,
including
its
properties,
polymerization,
modification,
recycling,
diverse
applications.
It
has
been
proposed
that
during
along
application
both
inorganic
organic
thermal
stabilizers,
can
mitigate
some
basic
limiting
characteristics
PVC.
chemistry
extended
by
vast
continuous
study,
mainly
chemical
transformations
this
polymeric
material.
describes
modification
using
different
materials
active
modifying
agent.
The
latter
included
substitutions,
modifications,
nucleophilic
radicals,
removal
or
dehydrochlorination,
grafting
polymerizations.
PVC's
consequences
are
examined,
overview
functionalization
provided
article,
discussion
main
reactivity
trends
lens
recycling.
Environmental Advances,
Journal Year:
2024,
Volume and Issue:
17, P. 100554 - 100554
Published: June 5, 2024
Scientific
predictions
are
a
key
component
of
Environmental
Impact
Assessments
(EIA),
which
can
indicate
the
level
change
within
an
environmental
sphere
(e.g.,
soil).
As
part
EIA
process,
decision-making
in
mitigating
complex
problems
such
as
maintaining
soil
quality
be
challenging,
especially
data-sparse
locations.
Artificial
Intelligence
(AI)
ameliorate
but
literature
suggests
that
deployment
Machine
Learning
(ML)
techniques
research
is
concentrated
mostly
developed
countries.
The
potential
ML
managing
pollution
from
mixture
heavy
metals,
petroleum
hydrocarbons,
and
physicochemical
factors
rarely
explored.
To
address
this
gap,
we
built
robust
models
increase
accuracy
impact
prediction
based
on
new
experimental
data
region
Africa
(i.e.,
Nigeria).
algorithms
applied
artificial
neural
networks
(ANN),
support
vector
regression
(SVR),
tree
(RT),
random
forest
(RF).
study
also
implemented
multivariate
linear
(MLR)
model
baseline.
Key
findings
include
(a)
MLR
performed
less
than
machine
learning
largely
due
to
nonlinearity
data;
(b)
Log-normalization
helped
improve
predictive
capability
all
effects
statistical
variability
were
removed;
(c)
RF
had
best
performance,
(d)
showed
improved
performance
with
increased
correlation
lower
error
between
actual
predicted
electrical
conductivity
values.
Our
results
imply
sparsity
may
no
longer
excuse
for
non-use
quantitative
Assessment
(EIA)
processes.
This
could
how
EIAs
conducted
enhance
sustainability
natural
resource
exploitation,
globally.
Future
work
will
apply
automated
feature
selection
obtain
optimal
subset
measurements
further
models.
Frontiers in Public Health,
Journal Year:
2024,
Volume and Issue:
12
Published: May 9, 2024
The
quality
of
water
in
urban
parks
is
closely
related
to
people's
daily
lives,
but
the
pollution
caused
by
microplastics
park
and
sediments
has
not
been
comprehensively
studied.
Therefore,
eight
typical
area
Changsha,
China,
were
selected,
Raman
spectroscopy
was
used
explore
spatial
distributions
compositions
sediments,
analyze
their
influencing
factors,
evaluate
environmental
risks.
results
showed
that
abundances
surface
all
ranged
from
150
525
n
L
