Environment International,
Journal Year:
2024,
Volume and Issue:
184, P. 108478 - 108478
Published: Feb. 1, 2024
Estuaries
serve
as
crucial
filters
for
land-based
pollutants
to
the
open
sea,
but
there
is
a
lack
of
information
on
migration
and
fate
organophosphate
flame
retardants
(OPFRs)
within
estuaries.
This
study
focused
Pearl
River
Estuary
(PRE)
by
examining
co-occurrence
OPFRs
their
metabolites
quantifying
transport
fluxes
using
mass
balance
model.
The
seawater
concentrations
exhibited
significant
seasonal
variations
(p
<
0.01),
while
sediment
reflected
long-term
distributional
equilibrium
in
PRE.
concentration
Σ
Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
57(5), P. 1907 - 1918
Published: Jan. 25, 2023
Organophosphate
esters
(OPEs)
discharged
from
wastewater
treatment
plants
(WWTPs)
have
attracted
increasing
concerns
because
of
their
potential
risks
to
aquatic
ecosystems.
The
identification
the
structures
OPEs
is
a
prerequisite
for
subsequent
assessment
environmental
impacts,
which
could
hardly
be
accomplished
using
traditional
target
analytical
methods.
In
this
study,
we
describe
use
suspect
and
nontarget
screening
techniques
organophosphate
triesters
diesters
(tri-OPEs
di-OPEs)
in
influent
effluent
samples
acquired
25
municipal
WWTPs
across
China.
There
are
totally
33
different
OPE
molecules
identified,
11
detected
first
time
4
new
public.
all
tested
samples,
di-OPEs
account
significant
portion
(53%
on
average)
total
(ng/L−μg/L).
More
importantly,
most
not
eliminated
after
these
WWTPs,
while
some
even
accumulate.
research
priority
based
ecological
risk
was
also
analyzed,
results
reflected
previously
unrecognized
exposure
emerging
living
organisms.
These
findings
present
holistic
understanding
relevance
country
scale,
will
hopefully
provide
guidance
upgrade
protocols
modification
governmental
regulations
future.
Materials Horizons,
Journal Year:
2024,
Volume and Issue:
11(8), P. 1867 - 1876
Published: Jan. 1, 2024
A
new
facile
and
scalable
interfacial
locking
engineering
strategy
is
exploited
to
endow
reversible
microcages
with
infinite
chemical
recyclability
starting
monomers,
exceptional
durability,
high
flame-retardant
efficiency,
extensive
applicability
across
diverse
polymers.
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(14), P. 6402 - 6414
Published: March 28, 2024
Limited
knowledge
on
the
structure
of
emerging
organophosphorus
compounds
(OPCs)
hampers
our
comprehensive
understanding
their
environmental
occurrence
and
potential
risks.
Through
suspect
nontarget
screening,
combining
data-dependent
acquisition,
data-independent
parallel
reaction
monitoring
modes,
we
identified
60
OPCs
(17
traditional
43
compounds)
in
effluents
14
wastewater
treatment
plants
(WWTPs)
Beijing
Qinghai,
China.
These
comprise
26
organophosphate
triesters,
17
diesters,
6
organophosphonates,
7
organothiophosphate
esters,
4
other
OPCs.
Notably,
were
newly
WWTP
effluents,
16
discovered
matrices.
Specifically,
cyclic
phosphonate,
(5-ethyl-2-methyl-1,3,2-dioxaphosphorinan-5-yl)methyl
dimethyl
phosphonate
P-oxide
(PMMMPn),
consistently
appeared
all
with
semiquantitative
concentrations
ranging
from
44.4
to
282
ng/L.
Its
analogue,
di-PMMMPn,
presented
93%
samples.
Compositional
differences
between
two
cities
mainly
attributed
Hazard
ecological
risk
assessment
underscored
substantial
contribution
chlorinated
esters
overall
risks
effluents.
This
study
provides
most
OPC
profiles
date,
highlighting
need
for
further
research
occurrence,
fate,
risks,
particularly
Heliyon,
Journal Year:
2022,
Volume and Issue:
8(11), P. e11225 - e11225
Published: Oct. 25, 2022
Polypropylene
has
been
used
for
applications
requiring
high
mechanical
properties,
good
adhesion,
chemical
stability
and
insulation.
Whereas,
itself
is
flammable,
its
limiting
oxygen
index
(LOI)
low,
which
cannot
pass
the
UL-94
combustion
test.
Therefore,
extensive
use
will
cause
a
serious
threat
to
human
life
property.
With
wide
application
of
thermoplastic
polypropylene
in
industry,
development
environmentally
friendly
flame
retardant
materials
become
an
important
research
direction.
For
past
dozen
years,
researchers
have
exploring
retardants
with
efficiency,
low
toxicity,
less
smoke
or
other
excellent
performance
retardants.
This
paper
reviews
progress
some
phosphorus-containing
on
properties
recent
years.
Phosphorus
application.
The
types
phosphorus
be
introduced,
future
summarized,
direction
opportunities.
The Science of The Total Environment,
Journal Year:
2022,
Volume and Issue:
849, P. 158368 - 158368
Published: Sept. 15, 2022
Food
ingestion
has
been
established
as
an
important
human
exposure
route
to
many
environmental
contaminants
(brominated
flame
retardants,
dioxins,
organochlorine
pesticides
etc).
However,
information
regarding
dietary
organophosphate
esters
(OPEs)
in
the
UK
remains
limited.
This
study
provides
first
comprehensive
dataset
on
OPEs
diet
by
measuring
concentrations
of
eight
393
food
samples,
divided
into
15
groups,
collected
from
Birmingham,
UK.
All
target
were
measured
above
limit
quantification
at
least
one
groups
analysed.
Concentrations
highest
(mean
∑8OPEs
=
18.4
ng/g
wet
weight
(ww))
milk
and
products,
followed
those
cereal
products
15.9
ww),
with
lowest
chickens'
eggs
1.61
ww).
Interestingly,
animal-derived
foods
44.2
ww)
statistically
indistinguishable
(p˃0.05)
plant-derived
36.8
Estimated
daily
intakes
(EDIs)
under
mean
high-end
scenarios
for
four
age
considered
were:
toddlers
(420
1547
ng/kg
bw/day)
˃
children
(155
836)
elderly
(74.3
377)
adults
(62.3
278)
bw/day,
respectively.
Baby
contributed
39
%
toddlers,
non-alcoholic
beverages
contributing
27
children,
while
(25
%)
fruits
(22
main
contributors
elderly.
The
foodstuffs
generally
same
order
magnitude
reported
other
countries
our
estimates
well
below
corresponding
health-based
values.
