Toxics,
Год журнала:
2023,
Номер
11(3), С. 214 - 214
Опубликована: Фев. 24, 2023
In
recent
years,
antibiotics
have
been
listed
as
a
new
class
of
environmental
pollutants.
Tetracycline
(TCs)
used
in
human
medical
treatment,
animal
husbandry
and
agricultural
production
are
the
most
widely
antibiotics.
Due
to
their
wide
range
activities
low
cost,
annual
consumption
is
increasing.
TCs
cannot
be
completely
metabolized
by
humans
animals.
They
can
abused
or
overused,
causing
continuous
accumulation
ecological
environment
potential
negative
effects
on
non-target
organisms.
These
may
spread
into
food
chain
pose
serious
threat
health
ecology.
Based
Chinese
environment,
residues
feces,
sewage,
sludge,
soil
water
were
comprehensively
summarized,
well
transmission
capacity
air.
This
paper
collected
concentrations
different
media
contributing
collection
TC
pollutant
database
China,
facilitating
monitoring
treatment
pollutants
future.
ACS Catalysis,
Год журнала:
2022,
Номер
12(22), С. 13897 - 13909
Опубликована: Окт. 28, 2022
Efficient
photocatalysts
are
crucial
for
degrading
antibiotic
pollutants
in
water
and
vital
environmental
remediation.
In
this
study,
an
efficient
carbon
quantum
dot
(CQD)-modified
BiOBr/Bi2WO6
hybrid
material
was
prepared
by
a
mild
hydrothermal
method.
Meanwhile,
visible-light-driven
micromotor
based
on
the
photocatalyst
developed.
The
can
achieve
self-propelled
motion
powered
photocatalytic
degradation
reaction.
It
exhibited
remarkable
activity
toward
common
water,
such
as
sulfonamide,
quinolone,
tetracycline
antibiotics.
Among
them,
10CQD/BiOBr/Bi2WO6-4
(10CBBr-4)
highest
activity,
which
2.8
5
times
higher
than
those
of
BiOBr
Bi2WO6,
respectively.
high
is
attributed
to
decoration
CQDs,
promoted
visible-light
absorption.
Additional
contributions
may
be
due
specific
Z-type
electron
transport
mode
flower-like
inserted
two-dimensional
(2D)
Bi2WO6
nanosheets,
enriched
active
reaction
sites,
facilitated
adsorption
molecules,
final
radical
attack.
Based
theoretical
calculation
molecular
orbitals
Fukui
index,
possible
intermediate
products,
pathways,
mechanism
were
elucidated.
This
study
suggests
that
structural
engineering
CQD
modification
effectively
allows
design
microrobots
degradation.
Abstract
Background
Threats
of
antimicrobial
resistance
(AMR)
to
human
health
are
on
the
rise
worldwide.
Airborne
fine
particulate
matter
(PM
2.5
),
especially
those
emitted
from
hospitals,
could
serve
as
a
substantial
yet
lesser-known
environmental
medium
inhalable
antibiotic
resistomes.
A
genome-centric
understanding
hosting
bacterial
taxa,
mobility
potential,
and
consequent
risks
resistomes
is
needed
reveal
relevance
PM
-associated
AMR
clinical
settings.
Results
Compared
urban
ambient
air
,
hospital
samples
harbored
nearly
twice
abundance
resistantance
genes
(ARGs,
~
0.2
log
10
(ARGs/16S
rRNA
gene))
in
summer
winter
sampled.
The
profiled
resistome
was
closely
correlated
with
human-source-influenced
(~
30%
contribution)
community
(Procrustes
test,
P
<
0.001),
reflecting
potential
antibiotic-resistant
bacteria
(PARB),
such
commensals
Staphylococcus
spp.
Corynebacterium
Despite
reduced
diversity
assembled
metagenomes
winter,
high
horizontal
transfer
ARGs,
clinically
relevant
bla
OXA
bac
A,
virulent
PARB
remained
unaffected
samples.
occurring
patterns
β-lactam
their
genomes
studied
hospital-emitting
were
related
in-ward
β-lactam-resistant
infections
(SEM,
std
=
0.62,
0.01).
Featured
more
abundant
potentially
(2.89
genome
copies/m
3
-air),
had
significantly
higher
risk
index
scores
than
samples,
indicating
that
daily
exposure
via
inhalation
ten
times
greater
ingestion
drinking
water.
Conclusions
significance
highlighted
by
prevalence
PARB,
close
association
infections.
larger-scale
multi-source
comparison
genome-resolved
provide
holistic
evaluate
importance
airborne
“One-Health”
perspective.
