Environmental Science and Ecotechnology,
Journal Year:
2024,
Volume and Issue:
21, P. 100421 - 100421
Published: April 20, 2024
Research
efforts
on
permanganate
(Mn(VII))
combined
with
redox-mediator
(RM),
have
received
increasing
attention
due
to
their
significant
performance
for
bisphenol-A
(BPA)
removal.
However,
the
mechanisms
underpinning
BPA
degradation
remain
underexplored.
Here
we
show
overlooked
interactions
between
RM
and
during
oxidation
by
introducing
an
RM—N-hydroxyphthalimide
(NHPI).
We
discovered
that
concurrent
generation
of
MnO2
phthalimide-N-oxyl
(PINO)
radical
significantly
enhances
within
pH
range
5.0–6.0.
The
detection
cross-coupling
products
PINO
radicals
or
its
derivatives
corroborates
pivotal
role
in
oxidation.
Intriguingly,
observed
formation
NHPI-BPA
complex,
which
undergoes
preferential
Mn(VII),
marked
emergence
electron-rich
domain
NHPI.
These
findings
unveil
underlying
Mn(VII)/RM
system
bridge
knowledge
gap
concerning
transformation
via
complexation.
This
research
paves
way
further
exploration
into
optimizing
complexation
sites
dosage,
enhancing
system's
efficiency
water
treatment
applications.
Journal of Separation Science,
Journal Year:
2025,
Volume and Issue:
48(4)
Published: April 1, 2025
ABSTRACT
A
growing
concern
has
been
raised
about
human
exposure
to
phthalates
and
bisphenols,
while
data
is
limited
regarding
the
accumulation
of
these
endocrine
disrupting
chemicals
at
target
tissue.
In
this
study,
a
novel,
simple,
sensitive
method
was
successfully
developed
for
simultaneous
determination
nine
phthalate
monoesters
bisphenols
in
prostate
tissue
samples.
solid–liquid
extraction
procedure
applied
following
ultra‐high
performance
liquid
chromatography
tandem
mass
spectrometry
analysis.
The
detection
quantification
limits
were
range
4.12
×
10
−3
0.370
ng/g
1.38
1.23
ng/g,
respectively.
average
spiked
recoveries
varied
from
71.4%
102%,
with
relative
standard
deviations
≤
10%.
Finally,
76
Four
(mono‐ethyl
phthalate,
mono‐
iso
‐butyl
n
mono‐benzyl
phthalate)
detected
highest
frequency
98.68%,
followed
by
other
five
(71.05%
∼
94.74%),
bisphenol
S
(72.37%),
(57.89%).
Five
not
any
sample.
concentrations
ranged
1.12
1.86
2
6.08
39.0
respectively,
errors
ranging
3.25×10
4.64
ng/g.
Besides,
positive
correlation
concentration
seven
could
be
observed
between
urine,
which
indicates
that
metabolites
urine
can
serve
as
noninvasive
biomarkers
evaluate
true
level
This
study
provides
information
on
association
their
urinary
metabolites,
supporting
further
studies
pollutant
disease.
Environmental Science and Ecotechnology,
Journal Year:
2024,
Volume and Issue:
21, P. 100421 - 100421
Published: April 20, 2024
Research
efforts
on
permanganate
(Mn(VII))
combined
with
redox-mediator
(RM),
have
received
increasing
attention
due
to
their
significant
performance
for
bisphenol-A
(BPA)
removal.
However,
the
mechanisms
underpinning
BPA
degradation
remain
underexplored.
Here
we
show
overlooked
interactions
between
RM
and
during
oxidation
by
introducing
an
RM—N-hydroxyphthalimide
(NHPI).
We
discovered
that
concurrent
generation
of
MnO2
phthalimide-N-oxyl
(PINO)
radical
significantly
enhances
within
pH
range
5.0–6.0.
The
detection
cross-coupling
products
PINO
radicals
or
its
derivatives
corroborates
pivotal
role
in
oxidation.
Intriguingly,
observed
formation
NHPI-BPA
complex,
which
undergoes
preferential
Mn(VII),
marked
emergence
electron-rich
domain
NHPI.
These
findings
unveil
underlying
Mn(VII)/RM
system
bridge
knowledge
gap
concerning
transformation
via
complexation.
This
research
paves
way
further
exploration
into
optimizing
complexation
sites
dosage,
enhancing
system's
efficiency
water
treatment
applications.
