Environmental Science & Technology,
Год журнала:
2023,
Номер
57(34), С. 12794 - 12805
Опубликована: Авг. 14, 2023
Plastic
recycling
and
reprocessing
activities
may
release
organophosphate
ester
(OPE)
flame
retardants
plasticizers
into
the
surrounding
environment.
However,
relevant
contamination
profiles
impacts
remain
not
well
studied.
This
study
investigated
occurrence
of
28
OPEs
their
metabolites
(mOPEs)
in
rainfall
runoffs
agricultural
soils
around
one
largest
plastic
industrial
parks
North
China
identified
novel
organophosphorus
compounds
(NOPs)
using
high-resolution
mass
spectrometry-based
nontarget
analysis.
Twenty
twenty-seven
were
detected
runoff
water
soil
samples,
with
total
concentrations
86.0–2491
ng/L
2.53–199
ng/g
dw,
respectively.
Thirteen
NOPs
identified,
which
eight
reported
environment
for
first
time,
including
a
chlorine-containing
OPE,
an
heterocycle,
phosphite,
three
OPE
metabolites,
two
oligomers.
Triphenylphosphine
oxide
diphenylphosphinic
acid
occurred
ubiquitously
soils,
up
to
390
40.2
The
downwind
areas
park
showed
elevated
levels
NOPs.
contribution
hydroxylated
mOPEs
was
higher
than
runoffs.
These
findings
suggest
that
are
significant
sources
biotransformation
further
increase
ecological
human
exposure
risk.
Environmental Science & Technology,
Год журнала:
2023,
Номер
57(5), С. 1907 - 1918
Опубликована: Янв. 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.
Flame
retardants
are
currently
used
in
a
wide
range
of
industry
sectors
for
saving
lives
and
property
by
mitigating
fire
hazards.
The
growing
safety
requirements
materials
boost
an
escalating
demand
consumption
retardants.
This
has
significantly
driven
both
the
scientific
community
to
pursue
sustainable
retardants,
but
what
makes
flame
retardant?
Here
overview
recent
advances
is
offered,
their
renewable
raw
materials,
green
synthesis
life
cycle
assessments
highlighted.
A
discussion
on
key
challenges
that
hinder
innovation
design
principles
creating
truly
yet
cost-effective
also
presented.
short
work
expected
help
drive
development
sustainable,
expedite
creation
more
safer
society.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Март 28, 2024
Abstract
Polymeric
materials,
rich
in
carbon,
hydrogen,
and
oxygen
elements,
present
substantial
fire
hazards
to
both
human
life
property
due
their
intrinsic
flammability.
Overcoming
this
challenge
the
absence
of
any
flame-retardant
elements
is
a
daunting
task.
Herein,
we
introduce
an
innovative
strategy
employing
catalytic
polymer
auto-pyrolysis
before
combustion
proactively
release
CO
2
,
akin
possessing
responsive
extinguishing
mechanisms.
We
demonstrate
that
potassium
salts
with
strong
nucleophilicity
(such
as
formate/malate)
can
transform
conventional
polyurethane
foam
into
materials
safety
through
rearrangement.
This
transformation
results
rapid
generation
volume
occurring
onset
intense
decomposition,
effectively
fires.
The
inclusion
just
1.05
wt%
formate
significantly
raise
limiting
index
26.5%,
increase
time
ignition
by
927%,
tremendously
reduce
smoke
toxicity
95%.
successful
application
various
salts,
combined
comprehensive
examination
underlying
mechanisms,
underscores
viability
strategy.
pioneering
approach
paves
way
for
efficient
eco-friendly
development
polymeric
safety.
Environmental Science & Technology,
Год журнала:
2023,
Номер
57(45), С. 17439 - 17451
Опубликована: Ноя. 6, 2023
Antibiotics
are
anthropogenic
contaminants
with
a
global
presence
and
of
deep
concern
in
aquatic
environments,
while
less
is
known
about
the
occurrence
risks
their
transformation
products
(TPs).
Herein,
we
developed
comprehensive
suspect
nontarget
screening
workflow
based
on
high-resolution
mass
spectrometry
to
identify
unknown
antibiotic
TPs
wastewater
treatment
plant
effluents.
We
identified
211
compounds
(35
parent
antibiotics
176
TPs)
at
confidence
levels
≥3
107
originated
from
macrolides.
were
quantified
by
17
standards
semiquantified
predicted
response
factors
accounted
for
55.6-95.1%
(76.7%
average)
total
concentrations
parents
TPs.
22.2%,
63.1%,
18.8%
estimated
be
more
persistent,
mobile,
toxic
than
antibiotics,
respectively.
Further
ecological
risk
assessment
toxicity
organisms
revealed
that
cumulative
generally
higher
those
parents.
Despite
newly
formed
N-oxide
TPs,
tertiary
process
(mainly
ozonation)
could
decrease
averaged
20.3%
36.2%
antibiotic-related
compounds.
This
study
highlights
necessity
include
environmental
scrutiny
different
environments.
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(14), С. 6402 - 6414
Опубликована: Март 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
Environmental Science & Technology,
Год журнала:
2022,
Номер
56(5), С. 2936 - 2949
Опубликована: Фев. 15, 2022
The
Stockholm
Convention
is
key
to
addressing
the
global
threats
of
persistent
organic
pollutants
(POPs)
humanity
and
environment.
It
has
been
successful
in
identifying
new
POPs,
but
its
national
implementation
remains
challenging,
particularly
by
low-
middle-income
Parties.
Concerted
action
needed
assist
Parties
implementing
Convention's
obligations.
This
analysis
aims
identify
recommend
research
scientific
support
for
timely
Convention.
We
aim
this
at
scientists
experts
from
a
variety
natural
social
sciences
all
sectors
(academia,
civil
society,
industry,
government
institutions),
as
well
funding
agencies.
Further,
we
provide
practical
guidance
promote
visibility
accessibility
their
work
implementation,
followed
recommendations
sustaining
study
first
series
on
analyzing
policy
needs
evidence
under
governance
chemicals
waste.
