Environmental Pollution,
Journal Year:
2021,
Volume and Issue:
286, P. 117546 - 117546
Published: June 8, 2021
The
application
of
plastic
film
mulching
can
greatly
improve
dryland
productivity,
while
the
release
toxic
phthalate
esters
(PAEs)
from
has
generated
concern.
This
study
investigated
effects
mulched
and
residual
on
PAE
concentrations
in
soil-crop
system
assessed
risks
to
people
eating
crop
products.
PAEs
concentration
0–25
cm
soil
layer
farmland
was
0.45–0.81
mg/kg,
average
0.37–0.73
mg/kg
non-mulched
decreased
by
19%.
reached
highest
July,
being
0.80–0.84
soil,
also
appeared
gradually
May
at
0.62–0.74
October,
were
almost
same
non–mulched
soils
harvest
time
October
0.37–0.44
mg/kg.
With
amounts
increasing
0
kg/ha
2700
(equivalent
total
amount
after
60
years
continuous
mulching),
no
significant
changes,
0.54–0.93
Maize
(Zea
mays
L.)
roots
could
absorb
accumulate
PAEs,
bio-concentration
factor
(BCF)
1.6–2.3,
stems,
leaves,
grains
79%–80%
those
0.77–1.47
For
ingestion
maize
or
potato
(Solanum
tuberosum
tubers
grown
containing
450–2700
kg/ha,
hazard
index
(HI)
less
than
1,
carcinogenic
(CRs)
2.5
×
10−7–2.2
10−6,
estrogenic
equivalences
6.17–17.73
ng
E2/kg.
provides
important
data
for
risk
management
farmlands.
