Land-based
microplastics
(MPs)
are
considered
the
primary
source
of
MPs
in
aquatic
environment,
with
runoff
being
a
significant
pathway
for
their
migration
from
soil
to
surface
water.
Nevertheless,
transportation
characteristics
via
agricultural
remain
unclear.
This
study
investigated
occurrence
and
emission
under
various
short-term
fertilization
natural
rainfall
using
laser
direct
infrared
(LDIR)
technology.
fertilizers
co-migrated
runoff.
The
abundance
concentration
were
145.90±22.48~2,043.38±89.51
items·L-1
39.17±21.94~523.04±47.8
µg·L-1,
respectively.
small-size
low-density
MPs,
such
as
polyethylene
(PE),
chlorinated
(CPE),
polyurethane
(PU)
film/fragment
form
20~50
µm
exhibited
higher
mobility.
No
statistically
differences
observed
distribution
There
was
positive
relationship
between
intensity.
Short-term
directly
influenced
NH4+-N
NO3--N
content,
thereby
impacting
annual
load
this
area
116.73
g·hm-2,
indicating
that
cannot
be
ignored.
is
conducive
further
understanding
behavior
soil-water
environment.
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 6, 2025
Microplastics
(MPs)
and
per-
polyfluoroalkyl
substances
(PFASs)
are
ubiquitous
contaminants
in
environments,
yet
their
co-occurrence
interactions
remain
insufficiently
understood.
In
this
study,
we
confirmed
the
concurrent
presence
of
MPs
PFASs
distinct
distribution
patterns
a
wastewater
treatment
plant
(WWTP)
through
comprehensive
sampling
analysis
effort.
Significant
correlations
(p
<
0.05)
were
observed
between
specific
types
PFASs,
suggesting
shared
sources.
Moreover,
identified
as
carriers
with
PFAS
concentration
ranging
122
166
ng/g,
predominantly
consisting
perfluorooctanoic
acid
(PFOA)
perfluorobutanoic
(PFBA).
The
laboratory
verification
experiment
revealed
that
could
be
leached
from
aqueous
which
commercial
exhibited
higher
leaching
potential,
highest
combined
perfluorooctanesulfonate
(PFOS),
PFOA,
PFBA
reaching
10.4
ng/mL.
PFOS
demonstrated
desorption
efficiency
exceeding
120%
sorption/desorption
experiments,
confirming
its
release
themselves.
These
results
highlighted
dual
roles
both
sources
PFASs.
contaminant
profiles
across
different
matrices
WWTP
provide
valuable
insights
form
basis
for
further
research
into
proactive
measures
to
effectively
mitigate
environmental
contamination.
