Water Science & Technology,
Journal Year:
2024,
Volume and Issue:
90(2), P. 631 - 648
Published: July 15, 2024
ABSTRACT
Wet
deposition
significantly
impacts
the
basin
ecosystem
and
water
quality
of
Qinling
Mountains
(QMs).
However,
few
research
focused
on
difference
in
wet
between
northern
(QN)
southern
(QS)
foothills
due
to
barrier
effect
QMs.
This
two-year
investigation
studied
nutrient
organic
matter
QN
QS
during
summer
autumn.
Results
showed
higher
concentrations
nitrogen
(N),
phosphorus
(P),
dissolved
carbon
(DOC),
permanganate
index
(CODMn)
QN's
rainwater,
particularly
The
CODMn
ranged
0.59–7.67
mg/L,
DOC
0.64–4.45
mg/L.
For
QS,
0.71–3.25
0.28–2.62
Backward
trajectory
analysis
revealed
accumulation
pollutants
originating
from
Northern
China,
intensified
by
autumn
heating
straw
burning.
Tyrosine-like
humic-like
components
rainwater
DOM
suggested
that
they
primarily
originated
autochthonous
sources.
Rainwater
N:P
mass
ratios
range
39:1
145:1,
highlighting
a
N
input
than
P
QMs'
deposition.
findings
underscore
importance
atmospheric
QMs
establish
foundation
for
exploring
ecological
effects
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(36), P. 16142 - 16152
Published: Aug. 28, 2024
Most
studies
on
Cu
toxicity
relied
indirect
physicochemical
parameters
to
predict
resulting
from
adverse
impacts.
This
study
presents
a
systematic
and
intuitive
picture
of
induced
by
exogenous
acidification
in
phytoplankton
Chlamydomonas
reinhardtii.
We
first
showed
that
reduced
the
algal
resistance
environmental
stress
with
decreased
growth
rate
increased
bioaccumulation.
To
further
investigate
this
phenomenon,
we
employed
specific
fluorescent
probes
visualize
intracellular
labile
pools
different
cells.
Our
findings
indicated
disrupted
trafficking,
leading
significant
increase
Cu(I)
pools.
At
molecular
level,
resulted
inhibition
import
system
activation
export
acidic
cells,
likely
response
imbalance
trafficking.
Subcellular
analysis
revealed
extensive
mitochondrial
dysfunction
impacted
biogenesis
assembly
respiratory
chain
complex
Concurrently,
proposed
polyP
synthesis
could
potentially
regulate
offers
an
intuitive,
multilevel
perspective
origins
impacts
living
organisms,
providing
valuable
insights
metal
toxicity.
Seven Editora eBooks,
Journal Year:
2023,
Volume and Issue:
unknown
Published: June 7, 2023
In
the
mid-seventeenth
century
in
England,
at
epicenter
of
Industrial
Revolution,
due
to
high
air
pollution,
observations
were
initiated
on
rainfall
with
acid
content
that
harmed
ecosystems.
With
industrial
advancement
a
global
scale,
rain
has
become
frequent
many
parts
world.
Acid
results
from
chemical
reactions,
mostly
mediated
by
anthropogenic
actions
such
as
activities
cause
emission
sulfur
dioxide
(SO2)
and
nitrogen
oxide
(NOx)
into
atmosphere,
produce
strong
acids
sulfuric
(H
2SO4)
nitric
(HNO3).
These
various
damages
human
health
well
damage
air,
aquatic
environment,
attacking
soils,
agriculture,
buildings,
monuments.
There
are
several
international
national
instruments
regulate
guidelines
prevent
polluting
thus
try
mitigate
negative
effects
rain,
most
recent
being
Sustainable
Development
Orders
(SDGs).
Despite
existing
policies,
it
is
necessary
impose
more
sustainable
regiments
encourage
research
subject
so
that,
together,
acts
severely
against
around
This
presents
concept
exposure
risk
factors,
consequences,
reflections
challenges
managing
rain.
Materials,
Journal Year:
2024,
Volume and Issue:
17(7), P. 1679 - 1679
Published: April 5, 2024
Corrosion
processes
at
cut
edges
of
galvanized
steels
proceed
as
highly
localized
electrochemical
reactions
between
the
exposed
bulk
steel
matrix
and
protective
thin
metallic
coating
a
more
electrochemically
active
material.
Scanning
microelectrochemical
techniques
can
thus
provide
spatially
resolved
information
needed
to
assess
corrosion
initiation
propagation
phenomena,
yet
most
methods
scan
edge
sections
embedded
in
insulating
resin
achieve
flat
surface
for
scanning
purposes.
In
this
work,
coatings
on
both
sides
material
were
concomitantly
simulated
acid
rain
while
characterizing
response
using
SECM
SVET
techniques,
thereby
maintaining
coupled
effects
through
exposure
whole
system
rather
realistic
operation
conditions.
The
shown
strongly
promote
oxygen
consumption
subsequent
alkalization
pH
10–11
over
iron,
diffusion
phenomena
eventually
yielded
complete
depletion
neutralization
nearby
electrolyte.
addition,
cathodic
activation
iron
was
intensified
with
thinner
despite
lower
presence
sacrificial
anode,
preferential
sites
attack
corners
revealed
acidification
below
4,
which
sustained
hydrogen
evolution
spots
steel-coating
interface.
