Microplastics,
Год журнала:
2024,
Номер
3(3), С. 477 - 491
Опубликована: Авг. 14, 2024
Plastic
pollution
has
become
a
growing
concern
for
environmental
and
human
health
in
recent
years.
Currently,
research
suggests
that
soil
compartments
might
be
highly
contaminated,
with
compost
being
one
of
the
major
sources
plastic
contamination,
especially
at
reduced
sizes.
In
Geneva,
microplastic
contamination
already
been
evaluated
industrial
but
not
yet
field-side
compost.
Therefore,
this
work
focuses
on
evaluation
concentrations
characterization
particles
(MPs)
Geneva.
Four
different
composts
were
sampled
Geneva
sieved
sizes
ranging
from
>5
mm
to
0.5
mm.
The
MPs
visually
sorted
when
possible,
smaller
ones
treated
by
digestion
density
separation
processes.
All
analyzed
infrared
spectroscopy.
results
(sizes
>
5
1.25
mm)
reveal
between
195
±
64
1315
375
particles/kg
presence
conventional
plastics
every
present
almost
size
fraction
four
composts,
origin
waste
seemed
influence
their
concentrations.
Indeed,
free
organic
household
had
lower
than
accepting
kind
waste.
Littering
still
wrapped
also
noticed
higher
MPs.
highlight
variety
types
among
mostly
represented
PE
(polyethylene),
PVA
(polyvinyl
alcohol),
PP
(polypropylene),
DAIP
(polydiallyl
iso-phthalate)
general
specific
PEMA
(poly
ethyl
methacrylate)
only
composts.
Further
is
needed
evaluate
distribution
according
or
used
composting,
potential
degrading
conditions
plastics,
mitigate
Microplastics,
Год журнала:
2024,
Номер
3(2), С. 250 - 263
Опубликована: Май 7, 2024
Microplastics
are
tangible
particles
of
less
than
0.2
inches
in
diameter
that
ubiquitously
distributed
the
biosphere
and
accumulate
water
bodies.
During
east-coast
hot
summers
(23–29
°C)
2021
2022,
June
through
September,
we
captured
copious
amounts
jellyfish
Chrysaora
chesapeakei,
a
predominant
species
found
Patuxent
River
Chesapeake
Bay
Maryland
on
United
States
East
Coast.
We
determined
their
gelatinous
bodies
trapped
many
microplastics
fluorescent
microscopy
studies
using
Rhodamine
B
staining
Raman
Spectroscopy.
The
chemical
nature
was
detected
gas
chromatography–mass
spectroscopy
headspace
(SPME-GC-MS)
solvent
extraction
(GC-MS)
methods
professional
commercial
materials
evaluation
laboratory.
Numerous
plastic-affiliated
volatile
organic
compounds
(VOCs)
from
diverse
origins
functional
groups
(alkanes,
alkenes,
acids,
aldehydes,
ketones,
ethers,
esters,
alcohols)
along
with
other
non-microplastic
were
observed.
Our
findings
corroborate
data
available
scientific
literature,
distinguishing
our
finding’s
suitability.
We
quantified
egested
microplastics
for
three
shorebird
species
(Western
Sandpiper
Calidris
mauri,
Dunlin
alpina,
and
Semipalmated
pusilla)
by
collecting
fecal
samples
at
major
stopover
sites
on
the
Pacific
Atlantic
coasts
of
Canada
in
2022.
The
sampling
effort
resulted
a
total
133
individual
samples,
93
from
40
sites.
Frequency
occurrence
was
generally
low
ranged
species:
Western
(FO=13%,
n
=
11/87),
(FO=17%,
1/6),
(FO=3%,
1/40).
Polyester
most
common
polymer
(n=6),
followed
polypropylene
(n=4),
polyamide
(n=4).
colors
were
white
(n=9,
64%)
black
(n
5,
36%).
This
study
adds
to
list
shorebirds
that
are
known
ingest
microplastic
pollution
underscores
need
understand
consequences
such
ingestion.
Microplastics,
Год журнала:
2024,
Номер
3(3), С. 477 - 491
Опубликована: Авг. 14, 2024
Plastic
pollution
has
become
a
growing
concern
for
environmental
and
human
health
in
recent
years.
Currently,
research
suggests
that
soil
compartments
might
be
highly
contaminated,
with
compost
being
one
of
the
major
sources
plastic
contamination,
especially
at
reduced
sizes.
In
Geneva,
microplastic
contamination
already
been
evaluated
industrial
but
not
yet
field-side
compost.
Therefore,
this
work
focuses
on
evaluation
concentrations
characterization
particles
(MPs)
Geneva.
Four
different
composts
were
sampled
Geneva
sieved
sizes
ranging
from
>5
mm
to
0.5
mm.
The
MPs
visually
sorted
when
possible,
smaller
ones
treated
by
digestion
density
separation
processes.
All
analyzed
infrared
spectroscopy.
results
(sizes
>
5
1.25
mm)
reveal
between
195
±
64
1315
375
particles/kg
presence
conventional
plastics
every
present
almost
size
fraction
four
composts,
origin
waste
seemed
influence
their
concentrations.
Indeed,
free
organic
household
had
lower
than
accepting
kind
waste.
Littering
still
wrapped
also
noticed
higher
MPs.
highlight
variety
types
among
mostly
represented
PE
(polyethylene),
PVA
(polyvinyl
alcohol),
PP
(polypropylene),
DAIP
(polydiallyl
iso-phthalate)
general
specific
PEMA
(poly
ethyl
methacrylate)
only
composts.
Further
is
needed
evaluate
distribution
according
or
used
composting,
potential
degrading
conditions
plastics,
mitigate
