Research Square (Research Square),
Год журнала:
2023,
Номер
unknown
Опубликована: Сен. 7, 2023
Abstract
Underground
rivers
serve
as
the
primary
source
of
drinking
water
in
karst
area
South
China
and
support
their
development.
However,
aquifer
structure
region
makes
it
easy
for
PAHs
(polycyclic
aromatic
hydrocarbons)
to
enter
underground
rivers,
which
causes
heavy
pollution
affects
quality
safety.
This
study
chose
Qingshuiquan
river
Nanning
City
a
representative
reveal
sources,
diffusion,
health
risks
sediment
rivers.
The
results
showed
that
∑
16
concentration
ranges
groundwater
were
294.44-489.91
ng/L
380.13-1141.97
ng/g
respectively.
From
upstream
downstream,
PAH
concentrations
increased,
proportion
with
lower
rings
decreased.
came
from
three
sources:
high-temperature
combustion
grass,
wood,
coal
upper
reaches,
petroleum
middle
oil
reaches.
As
ring
numbers
organic
carbon
content
more
likely
disperse
into
sediment.
Sediment
turned
sink,
sink
source.
posed
only
carcinogenic
zero
non-carcinogenic
risks,
adults
suffering
higher
than
children,
dermal
contacts
riskier
ingestion.
levels
differed
spatially,
downstream
significantly
those
midstream
upstream.
monomers
such
BaP
DaA
require
close
attention.
These
can
provide
scientific
evidence
POPs
(persistent
pollutants)
prevention
control
environment.
Atmosphere,
Год журнала:
2024,
Номер
15(2), С. 233 - 233
Опубликована: Фев. 15, 2024
Polycyclic
aromatic
hydrocarbons
(PAHs)
pollution
has
emerged
as
a
significant
environmental
issue
in
Bangladesh
the
recent
years,
driven
by
both
economic
and
population
growth.
This
review
aims
to
investigate
current
trends
PAHs
research,
covering
sediments,
water,
aquatic
organisms,
air
particles,
associated
health
risks
Bangladesh.
A
comparative
analysis
with
research
other
countries
is
conducted,
potential
future
directions
are
explored.
suggests
that
on
less
well
studied
fewer
publications
compared
countries.
Dominant
sources
of
fossil
fuel
combustion,
petroleum
hydrocarbons,
urban
discharges,
industrial
emissions,
shipbreaking,
shipping
activities.
The
concentrations
organisms
were
found
be
higher
than
those
most
around
world.
Therefore,
coastal
sediments
showed
areas.
Health
risk
assessments
reveal
carcinogenic
non-carcinogenic
residents
due
consumption
organisms.
According
this
investigation,
it
can
concluded
there
considerably
different
compartments
Bangladesh,
which
have
received
attention
Considering
these
circumstances,
recommends
should
focus
ecosystems,
shipbreaking
areas,
direct
exposure
human
risks.
study
addressing
identification
PAH
sources,
bioaccumulation,
biomagnification
food
web,
biomarker
responses
benthic
research.
