Inorganics,
Journal Year:
2025,
Volume and Issue:
13(2), P. 35 - 35
Published: Jan. 24, 2025
This
paper
presents
a
methodology
for
the
preparation
of
new
active
component
ion-selective
membranes,
based
on
di-substituted
sulfonium
derivative
closo-decaborate
anion
at
apical
vertices
with
octadecylalkyl
substituents
1,10-B10H8(S(C18H37)2)2.
approach
is
characterized
by
physicochemical
methods
analysis
(11B,
1H,
13C
NMR
spectroscopy,
IR
spectroscopy
and
elemental
analysis).
The
compound
obtained
used
as
an
PVC
membrane
selective
to
terbinafine
hydrochloride.
sensor
developed
highly
drug
be
detected,
has
linearity
range
4.0
×
10−8–1.0
10−2
detection
limit
1.0
10−8,
can
detect
hydrochloride
in
pH
3
6.
Environmental and Sustainability Indicators,
Journal Year:
2024,
Volume and Issue:
22, P. 100378 - 100378
Published: March 15, 2024
This
study
aimed
at
determining
the
relationship
of
chlorophyll
a
(Chl
a)
and
nutrients
in
two
reservoirs
different
sizes,
namely
Bueng
Si
Than
Thung
Sang,
which
are
located
Khon
Kaen
Province
Thailand.
The
evaluation
trophic
state
index
estimated
threshold
amounts
was
consequently
considered.
Water
samples
were
collected
during
both
dry
rainy
seasons
with
twenty-seven
sampling
points
each
reservoir.
Parameters
indicating
water
quality
based
on
APHA
method.
results
showed
significant
difference
average
physicochemical
properties
nutritional
parameters
smaller
proportion,
having
more
than
Sang
(p
<
0.05).
Nutrient
factors
(TP,
TKN)
impact
occurrence
eutrophication
season
season.
Average
ratios
Chl
together
revealed
hypertrophic
conditions
reservoirs.
high
value
a:TP
signaled
that
algal
growth
these
could
be
controlled
by
TP.
Pearson
correlation
analysis
indicated
strong
positive
TP
Than.
Moreover,
obtained
from
simulation
achieved
using
MATLAB
R2022a,
performed
fourth
order
polynomial
equation,
boundary
values
28.25–29.42
μg/L
4.15-4.19
mg/L
for
TKN
prior
to
Eutrophic
occurrence,
ascertain
further
management
small-scale
artificial
The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
928, P. 172482 - 172482
Published: April 14, 2024
Various
environmental
factors
play
a
role
in
the
formation
and
collapse
of
Microcystis
blooms.
This
study
investigates
impact
heavy
rainfall
on
cyanobacterial
abundance,
microbial
community
composition,
functional
dynamics
Nakdong
River,
South
Korea,
during
typical
exceptionally
rainy
years.
The
results
reveal
distinct
responses
to
variations,
particularly
dominance
physicochemical
characteristics.
In
2020,
characterized
by
unprecedented
from
mid-July
August,
blooms
were
interrupted
significantly,
exhibiting
lower
cell
densities
decreased
water
temperature,
compared
normal
bloom
patterns
2019.
Moreover,
composition
varied,
with
increases
Gammaproteobacteria
notably
genera
Limnohabitans
Fluviicola.
These
alterations
conditions
bacterial
similar
those
post-bloom
period
late
September
It
shows
that
summer
leads
changes
factors,
consequently
causing
shifts
communities
akin
observed
autumn-specific
also
accompany
functions,
primarily
involved
degradation
organic
matter
such
as
amino
acids,
fatty
terpenoids,
which
are
assumed
have
been
released
due
significant
cyanobacteria.
Our
demonstrate
early
induces
subsequently
their
autumn,
leading
earlier
breakdown
Scientific Data,
Journal Year:
2024,
Volume and Issue:
11(1)
Published: June 21, 2024
Abstract
Trophic
state
index
(TSI)
serves
as
a
key
indicator
for
quantifying
and
understanding
the
lake
eutrophication,
which
has
not
been
fully
explored
long-term
water
quality
monitoring,
especially
small
medium
inland
waters.
Landsat
satellites
offer
an
effective
complement
to
facilitate
temporal
spatial
monitoring
of
multi-scale
lakes.
surface
reflectance
products
were
utilized
retrieve
annual
average
TSI
2693
lakes
over
1
km
2
in
China
from
1984
2023.
Our
method
first
distinguishes
types
by
pixels
with
decision
tree
then
derives
relationships
between
trophic
algal
biomass
index.
Validation
public
reports
existing
datasets
confirmed
good
consistency
reliability.
The
dataset
provides
reliable
results
credible
trends
under
different
area
scales,
can
serve
reference
further
research
provide
convenience
sustainable
management.
Global Ecology and Conservation,
Journal Year:
2024,
Volume and Issue:
54, P. e03084 - e03084
Published: July 11, 2024
Chlorophyll-a
(Chl-a)
and
algal
cell
density
(ACD)
are
vital
for
assessing
proliferation
eutrophication
in
aquatic
ecosystems.
Although
Chl-a
is
often
used
as
a
proxy
ACD,
its
accuracy
requires
validation,
studies
on
their
linear
correlation
scarce.
Additionally,
ACD
influenced
by
various
factors,
including
nutritional,
economic,
biochemical,
physicochemical,
meteorological
factors.
However,
the
relative
importance
of
these
factors
remains
insufficiently
studied.
This
study
analyzed
data
from
57
lakes
reservoirs
across
China
March
2021
to
February
2023,
investigating
distribution
patterns
different
regions
seasons.
The
employed
regression
model
explore
between
seasons
throughout
China.
Furthermore,
Mantel
test
generalized
were
evaluated
nutritional
(total
nitrogen
(TN),
total
phosphorus
(TP),
TN/TP
ratio
(TN/TP),
ammonia
(NH3-N)),
economic
(gross
domestic
product),
(surface
pressure,
net
solar
radiation,
air
temperature,
wind
speed
(WS),
rainfall
(RF)),
well
biochemical
physicochemical
(turbidity
(TUR),
pH
value,
water
temperature
(WT),
permanganate
index,
dissolved
oxygen)
ACD.
Results
showed
that
average
concentrations
South
highest,
at
12
μg/L
19.5
×
106
cells/L,
respectively.
Seasonally,
peaked
spring
was
lowest
winter,
while
summer
winter.
Significant
seasonal
regional
variations
observed,
with
showing
strongest
relationship.
In
Central
China,
significantly
correlated
four
seasons,
whereas
correlations
less
distinct
Eastern
Western
regions.
Therefore,
caution.
Nutrient
(TN,
TP,
TN/TP,
NH3-N)
identified
primary
drivers
Meteorological
(WS,
RF),
along
(WT,
TUR)
also
emerged
critical
predictors
spatial
variations.
validates
analyzes
spatiotemporal
distribution,
assesses
influence
enhancing
our
understanding
dynamics
Chinese
reservoirs.
International Journal of Sediment Research,
Journal Year:
2024,
Volume and Issue:
39(3), P. 375 - 385
Published: June 1, 2024
Water
quality
management
in
shallow
impounded
lakes
is
challenging
due
to
nutrient's
enrichment
and
algal
blooms.Lake
Hongze
a
reservoir
for
the
South-to-North
Diversion
Project's
Eastern
Route
an
essential
water
source
Jiangsu
Province,
China,
its
closely
relates
local
aquatic
ecosystem
affects
supply
security
of
surrounding
areas.The
spatial
seasonal
patterns
total
nitrogen,
phosphorus
(TP),
chlorophyll-a
(Chl-a)
lake
were
investigated
effects
floods
on
these
assessed.Hydrological
data
trophic
state
parameters
analyzed
using
7
years
monitoring
from
16
sampling
sites
throughout
lake.The
statistical
analysis
revealed
variation
characteristics
affected
by
differences
material
transport
continuity
between
inflow
outflow
boundaries.Eutrophication
assessment
level
index
Chl-a
concentrations
also
indicated
eutrophication
was
concentrated
at
southeast
side
lake.Spatial
interpolation
ordinary
kriging
method
clarified
that
existence
movement
localized
area
Lake
Hongze.The
mass
balance
calculations
TP
substantial
amount
entered
during
flood
season,
however,
most
severe
blooms
occurring
after
season.The
onset
exhibits
significant
time
lag
response
input,
primarily
influence
hydrodynamic
processes
within
season.
