Toxics,
Journal Year:
2023,
Volume and Issue:
11(4), P. 376 - 376
Published: April 16, 2023
The
dissolved
organic
matter
(DOM)
is
one
of
the
most
sensitive
indicators
changes
in
soil
environment,
and
it
mobile
active
component
that
serves
as
an
easily
available
source
nutrients
energy
for
microbes
other
living
organisms.
In
this
paper,
DOM
structural
characteristics
main
properties
were
investigated
by
three-dimensional
fluorescence
spectroscopy
(EEM)
UV–visible
spectrum
technology
farmland
soils
around
Urumqi
China,
its
possible
sources
pathways
analyzed
spectroscopic
indices.
results
showed
humic-like
substances
composition
DOM,
autogenesis
not
obvious.
Main
such
aromatability,
hydrophobicity,
molecular
weight,
size,
humification
degree
southern
region
higher
than
those
northern
Fukang
on
upper
layers
(0–0.1
0.2
m)
deeper
layer
(0.2–0.3
m).This
may
be
because
tilled
more
subjected
to
fertilization
conducive
microbial
activities.
analysis
these
regions
mainly
from
metabolites.
These
provide
basic
scientific
data
further
research
environmental
chemical
behavior
pollutants
pollution
control
region.
Trends in Environmental Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
42, P. e00231 - e00231
Published: March 15, 2024
Dissolved
organic
matter
(DOM)
is
a
complex
mixture
of
compounds,
which
significant
relevance
in
the
context
drinking
water
treatment.
This
importance
stems
from
its
well-established
role
as
primary
precursor
potentially
harmful
disinfection
byproducts
(DBPs)
when
subjected
to
chemical
processes.
Characterizing
DOM
challenging
task
due
inherent
heterogeneity
and
wide
range
compounds
it
contains.
Additionally,
composition
can
vary
based
on
source
quality
specific
treatment
processes
employed.
Advanced
analytical
techniques,
such
non-targeted
analyses
using
ultrahigh-
or
high-resolution
mass
spectrometry
[(U-)HRMS],
are
improving
our
understanding
nature
present
their
potential
form
DBPs.
In
this
review,
most
commonly
used
(U-)HRMS
approaches
for
analyzing
raw
treated
waters
reported,
application
monitoring
tool
track
changes
formation
DBPs
assessed.
Moreover,
recommendations
achieving
common
comparable
fingerprint
approach
among
different
laboratories
instruments
provided.
The
results
reviewed
here
provide
indexes
ranges
that
assist
tracking
various
effects
Overall,
characterization
presented
an
effective
evaluating
processes,
predicting
DBP
formation,
assessment
human
consumption.
Journal of environmental chemical engineering,
Journal Year:
2023,
Volume and Issue:
11(5), P. 111030 - 111030
Published: Sept. 16, 2023
In
this
study,
a
continuous
flow
photo-electro-Fenton
(PEF)
system
was
evaluated
for
its
ability
to
remove
pharmaceutically
active
compounds
(PhACs)
from
irrigation
water
used
in
Bogotá-savanna
crops.
The
PEF
consisted
of
dimensionally
stable
anode
and
graphite
diffusion
gas
cathode,
which
were
irradiated
with
LEDs.
Firstly,
the
optimized
using
response
surface
methodology
(RSM)
ultrapure
water.
most
favorable
conditions
efficient
generation
oxidants
(the
variable)
found
be
rate
210
mL/min,
current
density
15
mA/cm2,
an
electrolyte
concentration
0.1
mol
NaCl/L.
Subsequently,
model
PhACs,
including
losartan
(LOS),
sulfamethoxazole
(SMX),
diclofenac
(DCF),
eliminated
after
only
10
minutes
treatment
under
previously
established
conditions.
After
demonstrating
potential
eliminate
applied
real
evaluate
degradation
seven
namely
carbamazepine
(CBZ),
ciprofloxacin
(CIP),
clarithromycin
(CLR),
valsartan
(VAL),
trimethoprim
(TMP).
results
showed
that
30
system,
these
drastically
reduced
remaining
undetected.
This
demonstrates
high
reduce
presence
PhACs
associated
environmental
food
health
risks.
Journal of Hazardous Materials,
Journal Year:
2024,
Volume and Issue:
477, P. 135277 - 135277
Published: July 22, 2024
Waste-derived
organics
introduced
to
soils
along
with
pharmaceutical
active
compounds
(PhAC)
are
a
crude
mixture
of
occurring
in
various
size
and
polarity
fractions.
They
affect
the
sorption
PhACs
soil;
however,
relevant
knowledge
is
still
insufficient.
The
effects
different
fractions
manure-derived
mobile
organic
matter
(<63
µm)
on
sulfadiazine,
caffeine
atenolol
five
topsoils
were
investigated.
Mobilization
was
strongest
presence
dissolved
(mDOM,
<0.45
µm),
reduction
K
Environmental Technology,
Journal Year:
2023,
Volume and Issue:
45(16), P. 3263 - 3275
Published: May 15, 2023
Erythromycin
(ERY),
as
a
common
macrolides
antibiotic,
is
widely
used
for
sterilisation
and
disinfection
of
humans
or
livestock
whose
migration
transformation
in
the
surface
water
environment
are
significantly
related
to
dissolved
organic
matter
(DOM).
The
characteristics
DOM
can
be
greatly
influenced
by
complexation
between
ERY
with
itself
soil
infiltration
system.
Using
spectroscopic
techniques
(excitation-emission
matrices,
parallel
factor
analysis,
Fourier
infrared
spectroscopy,
synchronous
fluorescence
spectroscopies)
explore
properties
each
component
binding
order
functional
groups
was
determined
two-dimensional
correlation
spectroscopy
combined
FTIR.
amide
I
band
v(C
=
O)
exhibited
stronger
affinity.
After
treatment,
intensity
sharply
decreased
concentration
declined
88.36%.
Thus,
degradation
may
occur
them.
result
integrated
indicated
that
sequencing
ability
changed
There
more
sites
effluent
than
influent.
A
protein-like
showed
priority
stable
had
highest
Log
KM
value
3.61.
These
results
demonstrated
system
could
take
out
most
fluorescent
DOM,
reduce
risk
body.
