Molecules,
Journal Year:
2023,
Volume and Issue:
29(1), P. 45 - 45
Published: Dec. 20, 2023
In
recent
years,
the
utilization
of
biomass
materials
for
removal
and
detection
water
pollutants
has
garnered
considerable
attention.
This
study
introduces,
first
time,
preparation
Fe3O4/persimmon
leaf
magnetic
composites.
The
composites
were
employed
in
a
solid-phase
extraction
method,
coupled
with
gas
chromatography-electron
capture
(GC-ECD),
analysis
four
pesticides
(trifluralin,
triadimefon,
permethrin,
fenvalerate)
environmental
samples.
innovative
persimmon
synthesized
by
situ
generation
Fe3O4
nanoparticles
through
coprecipitation
loaded
onto
leaves.
These
exhibit
superparamagnetism
saturation
magnetization
12.8
emu
g−1,
facilitating
rapid
phase
separation
using
field
reducing
time
to
10
min.
Desorption
can
be
achieved
within
30
s
aspirating
20
times,
eliminating
need
time-consuming
labor-intensive
experimental
steps
like
filtration
centrifugation.
specific
surface
area
composite
adsorbent
increased
from
1.3279
m2
g−1
original
5.4688
g−1.
abundant
hydroxyl
carboxyl
groups
on
provide
ample
adsorption
sites,
resulting
capacities
ranging
55.056
mg
73.095
studied
pesticides.
exhibited
recoveries
80%
90%
Compared
certain
previously
reported
MSPE
methods,
this
approach
achieves
equivalent
or
higher
shorter
operation
demonstrating
enhanced
efficiency
convenience.
Good
linearity
target
analytes
was
obtained
range
0.75–1500
μg
L−1,
determination
coefficient
(R2)
greater
than
0.999.
findings
contribute
use
as
effective
environmentally
friendly
adsorbents
pollutant
International Journal of Molecular Sciences,
Journal Year:
2023,
Volume and Issue:
24(3), P. 2892 - 2892
Published: Feb. 2, 2023
Pyrethroids
are
insecticides
most
commonly
used
for
insect
control
to
boost
agricultural
production.
The
aim
of
the
present
research
was
determine
effect
permethrin
and
cypermethrin
on
cultured
non-cultivated
bacteria
fungi
activity
soil
enzymes,
as
well
usefulness
Zea
mays
in
mitigating
adverse
effects
tested
pyrethroids
microbiome.
analyses
were
carried
out
samples
both
not
sown
with
any
plant
mays.
Permethrin
found
stimulate
multiplication
organotrophic
(on
average
by
38.3%)
actinomycetes
80.2%),
inhibit
growth
31.7%)
enzymatic
soil,
reducing
biochemical
fertility
index
(BA)
27.7%.
They
also
modified
number
operational
taxonomic
units
(OTUs)
Actinobacteria
Proteobacteria
phyla
Ascomycota
Basidiomycota
phyla.
pressure
tolerated
Sphingomonas
(clone
3214512,
1052559,
237613,
1048605)
Bacillus
New.ReferenceOTU111,
593219,
578257),
Penicillium
(SH1533734.08FU,
SH1692798.08FU)
Trichocladium
(SH1615601.08FU).
Both
disturbed
yielding
mays,
a
result
which
its
yield
leaf
greenness
decreased.
cultivation
had
positive
enzymes
microorganisms
mitigated
anomalies
caused
microbiome
enzymes.
decreased
aerial
parts
37.9%
roots
33.9%,
whereas
respective
decreases
reached
16.8%
4.3%.
Ecotoxicology and Environmental Safety,
Journal Year:
2022,
Volume and Issue:
241, P. 113732 - 113732
Published: June 6, 2022
The
indiscriminate
use
of
deltamethrin
in
agriculture
and
aquaculture
can
lead
to
residues
increased
many
regions,
which
poses
negative
impacts
on
intestinal
health
aquatic
organisms.
Although
the
potential
toxicity
have
recently
attracted
attention,
comprehensive
studies
injuries
after
chronic
exposure
remain
poorly
understood.
Herein,
a
28-day
test,
crucian
carp
expose
different
concentrations
(0,
0.3,
0.6
μg/L)
were
used
as
research
object.
We
found
that
morphology
changes
goblet
cells
tissue,
extent
tissue
injury
along
with
increasing
dose
deltamethrin.
Additionally,
genes
expression
antioxidant
activity
(Cu/Zn
superoxide
dismutase
(Cu-Zn
SOD),
glutathione
peroxidase
1
(GPX1),
catalase
(CAT)),
inflammatory
response
(tumor
necrosis
factor
alpha
(TNFα),
interferon
gamma
(IFNγ),
interleukin
beta
(IL-1β)),
tight
junctions
(Claudin
12
(CLDN12),
junction
protein
(ZO-1))
dramatically
increased.
Meanwhile,
apoptosis
autophagy
process
triggered
through
caspase-9
cascade
related
5
(ATG5)-
(ATG12)
conjugate.
Besides,
amount
Proteobacteria
Verrucomicrobiota,
while
decreased
Fusobacteriota
abundance,
resulting
microbiota
function
disorders.
In
summary,
our
results
highlight
cause
serious
physiological
flora
disturbances.
Fishes,
Journal Year:
2024,
Volume and Issue:
9(3), P. 79 - 79
Published: Feb. 20, 2024
Aquatic
products
are
good
sources
of
essential
nutrients,
but
the
presence
pyrethroids
(PYRs)
as
contaminants
may
pose
risks
to
consumer
health
intricate
matrices
PYRs
usually
obstruct
chemical
hazard
detection.
In
this
study,
a
gas
chromatographic
method
was
established
and
validated
for
simultaneously
detecting
residues
seven
(cyhalothrin,
permethrin,
cyfluthrin,
cypermethrin,
tau-fluvalinate,
fenvalerate,
deltamethrin)
in
aquatic
products.
The
aim
assess
better
potential
pesticide
were
extracted
with
acetonitrile,
purified
n-hexane
saturated
cleaned
up
on
Cleanert®
Alumina
N
column.
Statistical
analysis
orthogonal
array
experimental
design
used
optimize
key
parameters.
To
validate
proposed
method,
commonly
consumed
(such
carp,
crucian
whiteleg
shrimp,
river
crab,
sea
cucumber,
scallop)
obtained
from
local
supermarkets
Shanghai.
Satisfied
linearity
calibration
curves
achieved
matrix-matched
standard
solution,
correlation
coefficient
(R2)
larger
than
0.995.
average
recoveries
at
five
fortification
levels
varied
77.0%
117.2%,
relative
deviations
(RSDs)
below
11.1%.
Concerning
electron
capture
detection,
limits
detection
(LOD)
quantification
(LOQ)
2.0–5.0
µg/kg
5.0–10.0
µg/kg,
respectively.
These
results
demonstrate
high
stability
sensitivity
products,
having
great
practicability
which
can
be
popularized
easily.
Environmental Research,
Journal Year:
2022,
Volume and Issue:
214, P. 114002 - 114002
Published: Aug. 5, 2022
Current-use
pesticides
(CUP)
are
extensively
applied
in
both
agricultural
and
urban
settings.
Exposure
occurs
mainly
via
the
dietary
pathway;
however,
other
pathways
such
as
inhalation
or
skin
contact
also
important.
In
this
study,
urinary
levels
of
12
CUP
metabolites
were
investigated
among
110
parent-child
pairs
during
two
seasons
2020.
Metabolites
pyrethroids
(3-PBA,
t/c-DCCA),
chlorpyrifos
(TCPY),
tebuconazole
(TEB-OH)
detected
more
than
60%
samples.
Chlorpyrifos
metabolite
was
found
at
highest
concentration
almost
all
significantly
higher
children
comparison
to
adults,
except
for
tebuconazole,
which
similar
groups.
children,
winter
samples
had
concentrations
pyrethroid
summer
samples,
but
only
winter.
No
association
between
proximity/surface
areas
around
residences
observed.
Based
on
our
findings,
we
suspect
that
exposure
is
driven
by
diet
effect
environmental
less
significant.
Daily
Intakes
estimated
with
three
possible
scenarios
considering
amount
excreted
urine
compared
Acceptable
Intake
values.
Using
a
realistic
scenario,
exhibited
health
risk,
still
within
safe
level.
The
exceeded
one
child
case
cypermethrin.
cumulative
risk
assessment
pesticide
mixtures
having
an
nervous
system,
based
total
margin
calculations,
did
not
indicate
any
risk.
overall
associated
observed
population
low.
However,
using
worst-case
scenario
suggests
need
continuous
evaluation
human
compounds,
especially
children.