This
study
presents
a
novel
pesticide
transport
module
for
the
OpenLISEM
runoff
and
erosion
model.
During
water
events,
high
amounts
of
pesticides
can
be
transported
alongside
runoff.
Simulating
this
process
helps
to
mitigate
adverse
effects
in
environment.
We
conceptualized
uptake
during
with
mixing-layer,
including
mass
transfer
dissolved
into
detachment
combination
enrichment
sorbed
pesticides.
Lateral
is
modelled
kinematic
wave
based
on
overland
flow
water.
The
model
simulations
were
line
observations
two
events
small
agricultural
catchment
South-Limburg,
Netherlands.
A
sensitivity
analysis
showed
that
was
mainly
influenced
by
rate,
soil-water
partitioning
exponent
ratio.
accurate
simulation
OpenLISEM,
enables
OLP
simulate
redistribution
adequately.
Environment International,
Год журнала:
2023,
Номер
181, С. 108280 - 108280
Опубликована: Окт. 30, 2023
Intensive
and
widespread
use
of
pesticides
raises
serious
environmental
human
health
concerns.
The
presence
levels
209
pesticide
residues
(active
substances
transformation
products)
in
625
samples
(201
soil,
193
crop,
20
outdoor
air,
115
indoor
dust,
58
surface
water,
38
sediment
samples)
have
been
studied.
were
collected
during
the
2021
growing
season,
across
10
study
sites,
covering
main
European
crops,
conventional
organic
farming
systems.
We
profiled
found
different
matrices
using
existing
hazard
classifications
towards
non-target
organisms
humans.
Combining
monitoring
data
information,
we
developed
an
indicator
for
prioritization
pesticides,
which
can
support
policy
decisions
sustainable
transitions.
Eighty-six
percent
had
at
least
one
residue
above
respective
limit
detection.
One
hundred
112
99
sediments,
78
76
197
dust.
number,
levels,
profile
varied
between
Our
results
show
that
non-approved
compounds
still
represent
a
significant
part
cocktails
should
be
accounted
programs
risk
assessments.
profiles
analysis
confirms
dominance
low-moderate
underscores
high
some
approved
recurring
"no
available"
situations.
Overall,
our
idea
assessed
mixture
context,
taking
environmentally
relevant
mixtures
into
consideration.
uncovered
uncertainties
gaps
addressed,
as
well
implications
EU
approval
status
level.
newly
introduced
help
identify
research
priority
areas,
act
reference
targeted
scenarios
set
forth
Farm
to
Fork
reduction
goals.
The Science of The Total Environment,
Год журнала:
2025,
Номер
967, С. 178797 - 178797
Опубликована: Фев. 12, 2025
The
integration
of
effect-based
and
chemical
profiling
has
been
advocated
to
assess
the
potential
ecotoxicological
risks
posed
by
mixtures
present
in
aquatic
ecosystems.
However,
concentrations
contaminants
surface
waters
can
vary
greatly
over
time
space,
making
it
challenging
ensure
risk
assessment.
Although
first
results
are
promising,
not
yet
proven
that
these
combined
approaches
also
capable
capturing
temporal
variation
risks.
study
aimed
test
this
combining
passive
time-integrative
sampling
with
chemical-analytical
techniques
agricultural
waterways.
Silicone
rubber
sheets
polar
organic
integrative
samplers
(POCIS)
were
deployed
four
water
bodies
consecutive
six-week
periods.
Passive
sampler
extracts
analysed
using
a
battery
22
vitro
vivo
bioassays
tandem
extensive
target
analysis
225
compounds.
induced
fluctuating
bioassay
responses
for
all
locations
during
periods,
highlighting
presence
spatial
toxic
pressure.
A
range
compounds,
primarily
fungicides
herbicides,
detected
periods
at
variable
concentrations,
persistent
but
pressure
regions.
toxicity
observed
could
solely
be
attributed
chemicals
6
%
cases
those
explaining
only
1-16.9
effects,
indicating
predominantly
caused
undetected
chemicals.
Risk
assessments
based
on
revealed
frequent
exceedances
trigger
values
It
is
concluded
better
capture
variations
than
traditional
analyses,
advanced
needed
explain
bioanalytical
response
profiles.
The Science of The Total Environment,
Год журнала:
2024,
Номер
949, С. 175036 - 175036
Опубликована: Июль 27, 2024
The
release
of
chemicals
into
the
environment
presents
a
significant
threat
to
aquatic
ecosystems
dependent
on
proximity
emission
sources
and
seasonal
dynamics
mobilization.
While
spatial-temporal
information
water
pollution
in
Europe
is
increasing,
there
are
substantial
knowledge
gaps
tropical
countries.
Thus,
we
took
Lake
Victoria
South
Basin
western
Kenya
as
case
study
identify
spatial
hot
spots
contamination,
quantified
toxic
risks
different
groups
organisms,
identified
risk
drivers.
For
this
purpose,
analyzed
grab
samples
from
five
rivers
with
agricultural
wastewater
treatment
plants
their
catchment
four
seasons.
We
used
liquid
chromatography
coupled
high
resolution
mass
spectrometry
(LC-HRMS)
target
list
785
organic
micropollutants.
A
total
307
compounds
were
detected
concentrations
ranging
0.3
ng/L
6.6
μg/L.
Using
Toxic
Unit
(TU)
approach
based
mixture
toxicity
standard
test
crustaceans
most
affected
group
followed
by
algae
fish.
crustaceans,
chronic
thresholds
exceeded
96
%
all
samples,
while
56
expected
be
acutely
toxic,
highest
February
during
dry
season.
High
unit
values
for
fish
recorded
July
season
May
wet
Diazinon,
imidacloprid,
clothianidin
pirimiphos-methyl
major
drivers
crustacean
triclosan
herbicide
mixtures
drive
seasons,
respectively.
18
found
exceed
acute
environmental
thresholds.
With
study,
strong
patterns
pollution,
could
confirmed
informing
prioritization
monitoring
abatement
enhance
quality
reduce
risks.
PeerJ,
Год журнала:
2023,
Номер
11, С. e15650 - e15650
Опубликована: Июль 18, 2023
Due
to
their
high
biodiversity,
small
water
bodies
play
an
important
role
for
freshwater
ecosystems.
Nonetheless,
systematic
pesticide
monitoring
in
creeks
with
a
catchment
<30
km2
is
rarely
conducted.In
this
study,
event-driven
samples
were
taken
from
May
until
November
2017
and
March
July
2018
after
20
rain
events
at
three
sampling
sites
areas
of
<27
the
Wetterau,
region
intensive
agriculture
Southern
Hesse,
Germany.
Additionally,
enriched
extracts
native
campaign
used
Microtox
assay
determine
baseline
toxicity
invertebrates
over
time
sum
toxic
units
(STU)
calculated
compare
potential
samples.Overall,
37
pesticides
17
transformation
products
found,
whereby
herbicide
metamitron
(79
µg/L)
showed
highest
concentration.
Regularly,
concentrations
peaked
level
within
each
event.
Within
event
maximum
concentration
was
mostly
reached
during
first
two
hours.
The
time-weighted
mean
values
all
between
2.0
µg/L
7.2
µg/L,
measured
exceeded
regulatory
acceptable
(RAC)
55%
least
one
pesticide.
EC50
varied
28.6
±
13.1
41.3
12.1
REF
(relative
enrichment
factor).
results
indicated
that
several
caused
toxicity,
activity
levels
concentrations,
then
steadily
decreased
parallel
level.
Median
STUs
ranged
-2.10
-3.91,
algae/aquatic
plants
-0.79
-1.84
fish
-2.47
-4.24.
For
sites,
significant
linear
correlation
STUinvertebratewas
found
(r2
=
0.48).The
present
study
suggest
(1)
current
programs
underestimate
risks
posed
by
exposure
aquatic
organisms
(2)
pre-authorization
risk
assessment
schemes
are
insufficient
protect
environments.
The Science of The Total Environment,
Год журнала:
2023,
Номер
907, С. 167994 - 167994
Опубликована: Окт. 22, 2023
About
60
%
of
Europe's
rivers
fail
to
meet
ecological
quality
standards
derived
from
biological
criteria.
The
causes
are
manifold,
but
recent
reports
suggest
a
dominant
role
hydro-morphological
and
water
quality-related
stressors.
Yet,
in
particular
micropollutants
hydrological
stressors
often
tend
be
underrepresented
multiple-stressor
studies.
Using
monitoring
data
four
Federal
States
Germany,
this
study
investigated
the
effects
19
stressor
variables
six
groups
(nutrients,
salt
ions,
dissolved
oxygen/water
temperature,
mixture
toxicity
51
micropollutants,
alteration
morphological
habitat
quality)
on
three
assemblages
(fishes,
macroinvertebrates,
benthic
diatoms).
Biological
were
analyzed
for
35
community
metrics
quantified
using
Random
Forest
(RF)
analyses
put
into
hierarchical
context.
To
compare
metric
responses,
grouped
categories
reflecting
important
characteristics
communities,
such
as
sensitivity,
functional
traits,
diversity
composition
well
composite
indices
that
integrate
several
one
single
index
(e.g.,
class).
Water
-
not
turned
out
dominate
responses
all
assemblages.
In
contrast,
less
pronounced
stronger
than
Explained
variances
RF
models
ranged
23-64
16-40
diatoms
18-48
fishes.
Despite
high
variability
across
groups,
sensitivity
tended
reveal
individual
higher
explained
variance
indices.
results
(physico-chemical)
deterioration
continues
impact
many
German
rivers,
despite
extensive
progress
wastewater
treatment
during
past
decades.
detect
deterioration,
schemes
need
target
relevant
physico-chemical
micropollutants.
Furthermore,
needs
measures
flow
magnitude
dynamics).
At
present,
surveys
rarely
address
degree
alteration.
order
achieve
good
status,
river
restoration
management
both
Restricting
just
organism
group
macroinvertebrates)
or
only
selected
class)
may
hamper
identification
its
classification
and,
thus
mislead
management.
Environmental Modelling & Software,
Год журнала:
2024,
Номер
174, С. 105960 - 105960
Опубликована: Янв. 24, 2024
This
study
presents
a
novel
pesticide
transport
module
for
the
OpenLISEM
runoff
and
erosion
model.
During
water
events,
high
amounts
of
pesticides
can
be
transported
alongside
runoff.
Simulating
this
process
helps
to
mitigate
adverse
effects
in
environment.
We
conceptualized
uptake
during
with
mixing-layer,
including
mass
transfer
dissolved
into
detachment
combination
enrichment
sorbed
pesticides.
Lateral
is
modelled
kinematic
wave
based
on
overland
flow
water.
The
model
simulations
were
line
observations
two
events
small
agricultural
catchment
South-Limburg,
Netherlands.
A
sensitivity
analysis
showed
that
was
mainly
influenced
by
rate,
soil-water
partitioning
exponent
ratio.
accurate
simulation
OpenLISEM,
enables
OpenLISEM-pesticide
simulate
redistribution
adequately.
The Science of The Total Environment,
Год журнала:
2024,
Номер
917, С. 170583 - 170583
Опубликована: Фев. 1, 2024
River
monitoring
programs
worldwide
consistently
unveil
micropollutant
concentrations
(pesticide,
pharmaceuticals,
and
industrial
chemicals)
exceeding
regulatory
quality
targets
with
deteriorating
effects
on
aquatic
communities.
However,
both
the
composition
individual
of
micropollutants
are
likely
to
vary
catchment
land
use,
in
particular
regarding
urban
agricultural
area
as
primary
sources
micropollutants.
In
this
study,
we
used
a
dataset
109
governmental
sites
monitored
across
Federal
State
North
Rhine-Westphalia,
Germany,
investigate
relationship
between
high-resolution
use
(distinguishing
urban,
forested
grassland
well
22
different
crop
types)
39
using
Linear
Mixed
Models
(LMMs).
Ecotoxicological
risks
were
indicated
for
mixtures
pharmaceutical
chemicals
100
%
pesticides
55
sites.
The
proportion
was
positively
related
most
pharmaceuticals
(R2
up
0.54),
whereas
proportions
areas
generally
showed
negative
relations.
Cropland
overall
weak
positive
relationships
0.29).
Individual
types,
particularly
vegetables
permanent
crops,
higher
relations
0.46).
findings
suggest
that
type-specific
pesticide
applications
mirrored
detected
concentrations.
This
highlights
need
spatial
magnitude
dynamics
exposure
relevant
pollution
sources,
which
would
remain
undetected
highly
aggregated
classifications.
Moreover,
imply
tailored
management
measures
reduce
from
their
ecological
effects.
Urban
point
could
be
managed
by
advanced
wastewater
treatment.
reduction
diffuse
uses
requires
additional
measures,
prevent
entering
environment
targets.
Toxicology Reports,
Год журнала:
2024,
Номер
12, С. 622 - 630
Опубликована: Июнь 1, 2024
Despite
the
global
ban
on
organochlorine
pesticides
(OCPs)
since
1970s,
their
use
continues
in
many
developing
countries,
including
Ethiopia,
primarily
due
to
lack
of
viable
alternatives
and
weak
regulations.
Nonetheless,
extent
contamination
resulting
environmental
health
consequences
these
countries
remain
inadequately
understood.
To
address
knowledge
gaps,
we
conducted
a
comprehensive
analysis
reported
concentrations
(n=398)
OCPs
(n=30)
distinct
yet
interconnected
water
matrices:
water,
sediment,
biota
Ethiopia.
Our
revealed
notable
geographical
bias,
with
higher
found
sediments
(0.074-1161.2
µg/kg),
followed
by
(0.024-1003
µg/kg)
(0.001-1.85
µg/L).
Moreover,
DDTs,
endosulfan,
hexachlorohexenes
(HCHs)
were
among
most
frequently
detected
Ethiopian
waters.
The
DDT
metabolite
Water Research,
Год журнала:
2024,
Номер
260, С. 121914 - 121914
Опубликована: Июнь 9, 2024
Wastewater
treatment
plants
(WWTPs)
are
essential
for
maintaining
a
good
water
quality
of
surface
waters.
However,
WWTPs
also
associated
with
deterioration
and
hydro-morphological
alteration.
Riverine
communities
respond
to
these
stressors
changes
in
their
community
structure,
abundance
diversity.
In
this
study,
we
used
dataset
94
monitoring
sites
across
North
Rhine-Westphalia,
Germany
investigate
the
influence
on
river
sections
downstream
WWTP
effluents.
More
specifically,
analyzed
effects
percentage
effluents
(in
relation
median
base
flow)
four
stressor
groups
(physico-chemistry,
micropollutants,
hydrological
morphological
alteration)
using
Linear
Mixed
Models
(LMM).
Furthermore,
assessed
impact
selection
twelve
ecologically
relevant
variables
reflecting
alteration
reference
fish
Canonical
Correspondence
Analysis
(CCA).
The
was
correlated
quality,
especially
toxic
units
wide
range
pharmaceuticals
including
diclofenac,
venlafaxine
sulfamethoxazole
(R²
up
0.54)
as
well
specific
pesticides
(e.g.,
terbutryn:
R²
=
0.33).
correlation
percent
weaker
most
pronounced
frequency
high
flow
0.24)
variability
0.19).
About
40
%
variance
structure
were
explained
by
12
CCA
models.
Water
hydrological,
but
not
showed
strong
albeit
highly
variable
individual
species.
results
indicate
that
degradation
important
factors
determining
ecological
status
communities.
context,
can
impose
point
sources
pollution
affect
cause
alterations
regime.
Further
management
measures
addressing
both
needed
improve
status.