Analytical Sciences,
Год журнала:
2023,
Номер
39(9), С. 1551 - 1560
Опубликована: Май 28, 2023
The
sensitive,
non-destructive
constant
wavelength
(CW)
and
energy
(CE)
SFS
techniques
have
been
used
for
the
simultaneous
determination
of
1-amino
pyrene
(AP)
1-napthyl
amine
(NA)
in
their
mixtures
without
prior
separation
via
optimization
different
experimental
conditions
(ΔλCW
70.0
nm,
ΔνCE
4000.0
cm−1,
scan
rate
240.0
nm/min,
25.0
°C,
methanol).
Amplitude–concentration
plots
linear
pyrene,
AP
(0.01–0.1
mg/L)
amine,
NA
(0.1–1.0
mg/L).
In
aqueous
methanolic
binary
mixtures,
mean
recoveries
(RSD,
LOD
LOQ)
were
found
to
be
100.09%
(0.053,
0.008
mg/L
0.034
emission,
100.11%
(0.141,
mg/L,
CWSFS,
100.05%
(0.109,
0.007
0.032
first
derivative
100.00%
(0.148,
0.031
CESFS,
99.99%
0.035
CESFS
modes
respectively.
Additionally,
100.29%
(0.360,
0.046
0.204
100.06%
(0.089,
0.098
0.436
(0.144,
0.065
0.288
(0.178,
0.077
0.339
100.03%
(0.181,
0.082
0.364
Considering
safety
greenness,
these
methods
might
considered
as
green
tools
using
analytical
eco-scale
approaches
(eco-scale
score
88.0).
Energies,
Год журнала:
2025,
Номер
18(1), С. 209 - 209
Опубликована: Янв. 6, 2025
Because
of
their
high
persistence,
polycyclic
aromatic
hydrocarbons
(PAHs)
are
found
in
a
wide
range
settings
and
pose
health
risk
to
both
humans
other
organisms.
Degradation
PAHs
is
an
essential
part
environmental
management.
By
combining
biological
metabolism
electrochemical
processes,
bioelectrochemical
systems
(BESs)
can
degrade
provide
important
applications
by
converting
the
chemical
energy
pollutants
into
electrical
for
conversion
recovery.
This
review
provides
comprehensive
introduction
PAH
degradation
BESs,
including
sources,
effects
performance
enhancement
methods,
pathways,
dominant
microorganisms.
focusing
on
relevant
research
recent
years,
main
innovative
focuses
optimization
configuration,
electrode
preparation,
media
additions
improve
removal
PAHs.
It
demonstrates
potential
BESs
field
remediation,
especially
effectiveness
treating
difficult-to-degrade
such
as
PAHs,
concentrating
application
mechanism
degradation.
intended
inexperienced
reader
with
insight
this
area
point
out
directions
future
research,
design
microbial
community
analysis.
Energy & Fuels,
Год журнала:
2024,
Номер
38(22), С. 21735 - 21792
Опубликована: Ноя. 1, 2024
Polycyclic
aromatic
hydrocarbons
(PAHs)
are
formed
invariably
through
oxidative
and
pyrolytic
degradation
of
organic
materials
fuels.
Understanding
the
highly
complex
reaction
mechanisms
that
dictate
their
synthesis
in
thermal
systems
has
been
given
a
great
deal
focus.
Such
interest
stems
from
two
broad
perspectives,
namely,
enhancing
efficiency
combustion
system,
energy
recovery
fuels
protecting
environment.
Health
environmental
effects
widely
vary
among
PAHs
where
certain
compounds
exhibit
carcinogenic
tendencies.
This
critical
review
mainly
aims
to
provide
general
mechanistic
view
commonly
discussed
formation
pathways
PAHs.
The
attained
knowledge
often
incorporates
experimental
measurements
kinetic
modelings,
as
well
mapped
out
by
quantum
chemical
calculations.
A
sampling
species
is
typically
conducted
via
molecular
beam
(MB)–mass
spectroscopy
(MS)
technique
connected
reactor
(flow
reactor,
jet-stirred
or
shock
tube).
Generally,
PAH
precursors
encompass
four
categories
(radicals
molecules):
acetylenic
compounds,
alkyl
radicals,
phenyl
resonance-stabilized
cyclic
radicals.
Overall,
relevance
mechanism
depends
on
consistency
between
proposed
model
pathways,
profiles
products
at
investigated
conditions
(i.e.,
temperatures,
pressures,
distance
burners).
effect
seeding
common
precursors,
with
other
explored
surveying
pertinent
studies.
Growth
higher
PAHs,
including
toxic
pyrene,
most
likely
involves
hydrogen
abstraction
acetylene
addition
(HACA)-like
starting
anthracene
bimolecular
reactions
involve
benzyl
radicals
indene
molecules.
synergistic
collaboration
different
suggested
account
for
observed
fast
growth
rate
As
experimentally
shown,
sequential
mass
15
u,
24
26
74
indicate
routes
MAC,
HACA,
HAVA*,
PAC
routes,
respectively.
Whether
physical
process
initial
step
conversion
into
soot
(the
inception
step)
still
debated
literature.
Recent
evidence
underscores
commence
creating
dimers
clustering
under
real
flame
400–1200
K).
Formation
synthetic
natural
polymers
ensues
condensation
fragments
structural
arrangements
polymeric
entities,
prior
fragmentation.
surveyed
presented
this
will
be
useful
readers
who
aim
comprehend
chemistry
underlying
systems.
Toxics,
Год журнала:
2023,
Номер
11(5), С. 435 - 435
Опубликована: Май 6, 2023
The
aim
of
this
study
was
to
evaluate
the
concentrations
polycyclic
aromatic
hydrocarbons
(PAHs)
in
1168
groundwater
samples
Campania
Plain
(Southern
Italy),
taken
using
a
municipal
environmental
pressure
index
(MIEP),
and
analyze
distribution
these
compounds
determine
source
PAHs
ratios
isomers
diagnostic.
Lastly,
also
aimed
estimate
potential
health
cancer
risk
groundwaters.
data
indicated
that
highest
concentration
found
from
Caserta
Province
contents
BghiP,
Phe,
Nap
were
detected
samples.
spatial
pollutants
evaluated
Jenks
method;
moreover,
incremental
lifetime
ILCRingestion
ranged
7.31
×
10−20
4.96
10−19,
while
ILCRdermal
4.32
10−11
2.93
10−10.
These
research
findings
may
provide
information
about
Plain’s
quality
aid
development
preventative
measures
lessen
PAH
contamination
groundwater.
International Journal of Environmental Research and Public Health,
Год журнала:
2023,
Номер
20(3), С. 1666 - 1666
Опубликована: Янв. 17, 2023
The
Lake
Togo-Lagoon
of
Aného
is
located
in
the
coastal
zone
where
phosphorite
mining
carried
out.
This
discharges
all
kinds
waste
such
as
fuel
oil
into
surrounding
environment
without
prior
treatment.
Moreover,
hydrosystem
receives
runoff
and
river
inputs
after
having
crossed
leached
from
urban
soils.
study
aims
to
determine
polycyclic
aromatic
hydrocarbons
(PAHs)
contamination
commercially
consumed
fish
species
(Chrysichthys
nigrodigitatus)
that
associated
health
risks
for
consumers.
For
that,
sample
collection
was
performed
during
dry
season.
Afterwards,
their
muscles,
gills,
livers
were
cut
12
PAHs
analyzed
using
gas
chromatography
coupled
with
a
mass
spectrometer
(GC-MS).
total
(tPAHs)
concentrations
tissues
ranged
5.24
48.40
µg/kg
average
concentration
14.51
±
8.95
5.90
28.20
averaging
14.90
5.19
43.20
149.00
an
80.74
27.08
livers.
low
molecular
weight
(LMW
PAHs)
10.82
9.61
8.25
5.43
47.97
22.56
whereas
those
high
(HMW
4.10
2.14
7.98
3.96
32.77
8.66
An
overall
trend
decreasing
increasing
size
classes
observed
some
(Naphtalene,
Pyrene
Pyrene,
Benzo(a)Anthracene,
Chrysene
gills
Naphtalene,
Phenanthrene
livers).
these
might
have
pyrogenic
petrogenic
sources,
dominance
pyrogenic,
hazard
quotients
(THQ)
are
less
than
1.
situation
must
not
be
neglected
better
planning
sustainable
management
target
ecosystem.
Atmosphere,
Год журнала:
2024,
Номер
15(3), С. 346 - 346
Опубликована: Март 12, 2024
The
polycyclic
aromatic
hydrocarbons
(PAHs)
in
size-resolved
particles
emitted
from
diverse
sources
are
required
for
quantification
to
reduce
the
emissions
order
protect
public
health.
Twenty-four
PAHs
size-segregated
roadside
environment
of
Beijing
were
observed
1
October
2021
30
September
2022.
size
distributions
bimodal,
with
peak
concentrations
ranging
fractions
0.43
0.65
μm
and
4.7
5.8
all
four
seasons,
respectively.
highest
concentration
fine
(PM2.1)
was
35.3
ng
m−3
winter,
followed
by
16.0
autumn,
15.3
spring,
6.5
summer.
Conversely,
coarse
(PM2.1–9)
ranged
6.8
(summer)
20.5
(winter)
low
high.
0.43–2.1
increased
most
clear
polluted
days,
which
could
be
ascribed
heterogeneous
reactions.
Source
apportionment
using
positive
matrix
factorization
showed
that
sources,
namely
biomass
combustion,
coal
diesel
vehicles,
gasoline
vehicles
accounted
estimation
17.4%,
22.1%,
26.4%,
23.2%
PM2.1;
19.6%,
24.3%,
23.6%,
20.1%
PM2.1–9,
Furthermore,
we
used
human
alveolar
epithelial
cell
(BEAS-2B)
assess
toxicological
effects
atmospheric
PAHs.
results
survival
rate
caused
lower
than
same
PAHs,
is
mainly
related
higher
content
highly
toxic
particles.
