The removal preference of Fe(III), Fe(II), and in situ Fe(III) in coagulation when treating NOM and TC
Separation and Purification Technology,
Год журнала:
2025,
Номер
unknown, С. 132180 - 132180
Опубликована: Фев. 1, 2025
Язык: Английский
Identification and Prioritization of Emerging Organophosphorus Compounds Beyond Organophosphate Esters in Chinese Estuarine Waters
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 17, 2025
Organophosphorus
compounds
(OPCs)
pose
potential
hazards
to
human
health
and
aquatic
ecosystems.
However,
limited
knowledge
of
emerging
OPCs
beyond
organophosphate
esters
(OPEs)
hinders
a
thorough
understanding
the
environmental
occurrence
exposure
risks.
Through
target,
suspect,
nontarget
screening
analysis,
64
were
successfully
identified
in
Chinese
estuarine
waters,
including
24
known
OPEs
40
analogues
(i.e.,
quaternary
phosphonium,
phosphine
oxide,
organophosphonate,
organothiophosphate
esters).
Domestic
wastewater
agricultural
industrial
discharges
factors
influencing
OPC
distribution
patterns.
In
particular,
phosphoniums
oxides
accounted
for
over
50%
total
loading
Yellow
Jia
Rivers,
which
likely
polluted
by
phosphorus-related
industries.
Risk
quotient
(RQ)
calculations
showed
that
tetrabutylphosphonium
contributed
most
algae
toxicity
due
biocidal
effects
onium
salts,
while
chloroalkyl
dominated
ecological
risks
daphnia
fish.
The
multicriteria
decision
analysis
approach
was
further
introduced
relative
chemical
ranking
considering
variations
hazard
criteria
occurrence,
fate,
OPCs.
results
indicate
aryl
have
priority
similar
and,
therefore,
require
more
attention.
Язык: Английский
Unraveling the Composition Profile and Ecological Risk of Triazine Herbicides and Their Transformation Products in Urban Sewage Discharge
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 19, 2025
Triazine
herbicides
(THs)
are
used
globally
to
control
weeds
in
urban
environments,
but
their
transformation
products
(TPs)
rarely
considered
due
the
lack
of
reference
standards.
In
this
study,
a
total
41
TPs
were
found
wastewater
influents
and
effluents
28
municipal
treatment
plants
(MWWTPs)
from
six
cities
China
by
integrating
suspect
screening
(36
TPs),
molecular
networking
(9
diagnostic
fragment
searching
(12
TPs).
Among
these,
36
detected
for
first
time
aquatic
reported
environments.
Polar
THs
only
partially
removed
aqueous
phase
process.
Concentrations
present
ranged
107
435
ng/L.
Thus,
discharged
pose
medium
risk
freshwater
algae
receiving
waters.
Moreover,
4
(ametryne,
atrazine,
terbutryn,
prometryne)
3
(atrazine-desisopropyl,
TP247,
TP258)
significant
risks
several
effluents.
Considering
persistent
mobile
properties
ecological
TPs,
these
contaminants
should
be
specifically
further
environmental
monitoring
included
regulation.
Язык: Английский
New Sources of Very Persistent and Very Mobile (vPvM) Substances: A Case Study of the Fluorinated Herbicide Pyroxasulfone
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 3, 2025
With
the
increasing
use
of
fluorinated
agrochemicals,
more
compounds
enter
into
environment.
Pyroxasulfone
(PYS),
a
broad-spectrum
herbicide
containing
an
aromatic
CF3
(Ar-CF3),
is
expected
to
grow
significantly
in
application.
Although
several
transformation
products
(TPs)
PYS
have
been
reported,
their
distribution
and
contribution
processes
remain
largely
unknown.
This
study
combined
laboratory
simulations
field
study.
In
soil
incubation
surface
photolysis
experiments,
(5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methanesulfonic
acid
(TFPSA)
was
identified
as
main
TP
soil,
accounting
for
over
90%
all
TPs.
Field
results
showed
that
TFPSA
were
species
(6.48
±
1.82
1.54
0.90
ng
g-1
wet
weight)
corn
plants
(2.55
2.61
31.1
39.6
dry
weight
roots)
before
harvest.
Surface
water
experiments
TP246
major
TPs
no
significant
photodegradation
observed.
Persistent
(P)
mobile
(M)
property
assessment
indicated
TFPSA,
TP246,
other
Ar-CF3
various
agrochemicals
could
be
potential
very
P
M
(vPvM)
substances.
More
attention
should
paid
Язык: Английский
Prediction of Potential Risk for Flupyradifurone and Its Transformation Products to Hydrobionts
Journal of Agricultural and Food Chemistry,
Год журнала:
2024,
Номер
72(27), С. 15151 - 15163
Опубликована: Июнь 28, 2024
Flupyradifurone
(FPF)
is
considered
the
latest
generation
of
neonicotinoid
insecticides.
Here,
we
investigated
toxicity
and
ecological
risk
FPF
its
aerobic
transformation
products
(TPs)
to
aquatic
species
using
method
prediction.
We
found
that
exhibited
moderate
or
high
some
species.
The
5%
hazardous
concentration
was
3.84
μg/L
for
organisms.
obtained
91
TPs
FPF,
almost
half
fish
Язык: Английский
Prediction of Potential Risk for Ten Azole and Benzimidazole Fungicides with the Aryl Hydrocarbon Receptor Agonistic Activity to Aquatic Ecosystems
Journal of Agricultural and Food Chemistry,
Год журнала:
2024,
Номер
73(2), С. 1167 - 1181
Опубликована: Дек. 31, 2024
Azole
and
benzimidazole
fungicides
are
widely
used
agrochemicals
to
prevent
treat
fungal
growth
frequently
detected
in
aquatic
environments.
Here,
we
aimed
assess
the
ecological
risks
of
ten
currently
azole
fungicides,
which
with
aryl
hydrocarbon
receptor
(AhR)
agonistic
activity,
their
transformation
products
(TPs).
We
obtained
over
400
types
aerobic
TPs
for
fungicides.
Some
(approximately
26.7%)
exhibited
potential
AhR
activity
toxicity
different
species.
Meanwhile,
some
compounds
chlorine
element
benzene
ring
structure
environmental
persistence
mobile
ability.
Several
them
were
environments,
posing
ecosystems.
These
harmful
should
be
given
attention.
This
study
provides
important
insight
into
caused
by
can
provide
theoretical
guidance
pollution
control.
Язык: Английский
Melamine – A PMT/vPvM substance as a generic indicator for anthropogenic activity and urbanisation? An explorative study on melamine in the water cycle and soil
Chemosphere,
Год журнала:
2024,
Номер
370, С. 143918 - 143918
Опубликована: Дек. 10, 2024
Melamine
has
a
high
production
volume
today
and
is
spread
ubiquitously
in
the
anthropogenic
technosphere.
It
released
steadily
to
water
cycle
by
many
sources.
Even
though
melamine
low
direct
toxicity,
chronic
exposure
can
cause
nephrolithiasis
disrupt
endocrine
system.
Most
data
on
are
based
case
studies
with,
when
compared,
partially
contradictive
implications.
As
compound
of
sources
(SMS),
v
persistent,
mobile
(vPvM),
toxic
(PMT)
it
potential
break
through
natural
barriers
posing
risk
drinking
resources.
This
study
combines
existing
with
own
measurements
gathered
various
individual
monitoring
campaigns
aim
gain
new
insights
into
its
environmental
behaviour
hotspots.
Samples
from
surface
bodies,
groundwater,
wastewater
(treated,
untreated),
soil
samples
were
analysed
regarding
their
concentration
via
liquid
chromatography
coupled
tandem
mass
spectrometry
(LC-MSMS).
Besides
three
samples,
could
be
found
all
(n=632)
this
study,
maximum
1
289
ng/L
120
groundwater.
While
constant
baseline
an
event-based
release
observed
most
higher
concentrations
towards
Western
Europe
(urbanisation
chemical
industry)
was
for
wastewater.
A
similar
pattern
spatial
distribution
agricultural
soils
urban/suburban
area,
as
some
pesticides
function
precursors
melamine.
As,
general,
urbans
centres
also
classified
indicator
activity
urbanisation,
but
spotlights
these
areas
hotspots
potentially
compounds
human
We
call
policy
shift
one-size-fits-all
solution
more
flexible
risk-based
approaches
prepare
future
challenges.
Язык: Английский