RSC Advances,
Год журнала:
2023,
Номер
13(47), С. 33446 - 33452
Опубликована: Янв. 1, 2023
In
modern
society,
people
spend
most
of
their
time
indoors
engaging
in
work
and
home
life.
However,
indoor
air
pollution
is
a
potential
risk
to
health,
it
associated
with
many
diseases.
Wooden
furniture,
as
the
popular
furniture
used
times,
major
source
pollution,
so
has
become
imperative
explore
composition
release
kinetics
characteristics
toxic
hazardous
substances
from
wood-based
panels.
this
study,
thermal
desorption-gas
chromatography-mass
spectrometry
(TD-GC-MS)
was
detect
organic
compounds
wood
panels,
determine
dimethyl
acetal,
phenol,
toluene
decanoic
acid
via
bi-exponential
mass
transfer
models
provide
theoretical
basis
for
targeted
prevention
control.
project,
climate
chamber
method
conduct
120
h
continuous
sampling
concentration
The
TD-GC-MS
analyze
tubes,
concentration-time
data
were
fitted
models.
emission
factor
equation
obtained
model.
critical
physical
parameters,
such
initial
internal
C0,
diffusion
rate
Dm,
solid-phase/gas-phase
partition
coefficient
K,
Finally,
found
that
acetal
easily
rapidly
released
into
air,
while
phenol
slowly
ambient
air.
two
sets
an
essential
control,
well
methodological
path
studying
different
substances.
A
known
strategy
for
mitigating
the
indoor
transmission
of
airborne
pathogens,
including
SARS-CoV-2
virus,
is
irradiation
by
germicidal
UV
light
(GUV).
particularly
promising
approach
222
nm
from
KrCl
excimer
lamps
(GUV222);
this
inactivates
but
thought
to
be
far
less
harmful
human
skin
and
eyes
than
longer-wavelength
GUV
(e.g.,
254
nm).
However,
potential
GUV222
affect
composition
air
has
received
little
experimental
study.
Here,
we
conduct
a
series
controlled
laboratory
experiments,
carried
out
in
150
L
Teflon
chamber,
examine
formation
oxidants
other
secondary
species
GUV222.
We
show
that
generates
ozone
(O3)
hydroxyl
radicals
(OH),
both
which
can
react
with
volatile
organic
compounds
form
oxidized
aerosol
particles.
Results
are
consistent
predictions
simple
box
model
based
on
photochemistry.
use
experimentally-validated
simulate
effect
under
more
realistic
scenarios,
spanning
range
ventilation
conditions.
demonstrate
some
conditions,
lead
levels
O3,
OH,
products
substantially
elevated
relative
normal
especially
when
low
intensity
high.
Thus,
should
used
at
lowest
intensities
possible
concert
ventilation,
decreasing
pathogens
while
pollutants
environments.
One
strategy
for
mitigating
the
indoor
transmission
of
airborne
pathogens,
including
SARS-CoV-2
virus,
is
irradiation
by
germicidal
UV
light
(GUV).
A
particularly
promising
approach
222
nm
from
KrCl
excimer
lamps
(GUV222);
this
inactivates
pathogens
and
thought
to
be
relatively
safe
human
skin
eye
exposure.
However,
impact
GUV222
on
composition
air
has
received
little
experimental
study.
Here,
we
conduct
laboratory
experiments
in
a
150
L
Teflon
chamber
examine
formation
secondary
species
GUV222.
We
show
that
generates
ozone
(O3)
hydroxyl
radicals
(OH),
both
which
can
react
with
volatile
organic
compounds
form
oxidized
aerosol
particles.
Results
are
consistent
box
model
based
known
photochemistry.
use
simulate
under
more
realistic
scenarios,
demonstrate
some
conditions,
lead
levels
O3,
OH,
products
substantially
elevated
relative
normal
conditions.
The
results
suggest
should
used
at
low
intensities
concert
ventilation,
decreasing
while
pollutants.
Physical Chemistry Chemical Physics,
Год журнала:
2024,
Номер
26(35), С. 23264 - 23276
Опубликована: Янв. 1, 2024
A
new
approach
combines
uptake
and
the
temperature
programmed
desorption
measurements
to
provide
a
molecular-level
view
of
atmospheric
particle
growth.
Adsorption/desorption
on
silica
particles
is
discussed
in
terms
gas
structural
features.
RSC Advances,
Год журнала:
2023,
Номер
13(47), С. 33446 - 33452
Опубликована: Янв. 1, 2023
In
modern
society,
people
spend
most
of
their
time
indoors
engaging
in
work
and
home
life.
However,
indoor
air
pollution
is
a
potential
risk
to
health,
it
associated
with
many
diseases.
Wooden
furniture,
as
the
popular
furniture
used
times,
major
source
pollution,
so
has
become
imperative
explore
composition
release
kinetics
characteristics
toxic
hazardous
substances
from
wood-based
panels.
this
study,
thermal
desorption-gas
chromatography-mass
spectrometry
(TD-GC-MS)
was
detect
organic
compounds
wood
panels,
determine
dimethyl
acetal,
phenol,
toluene
decanoic
acid
via
bi-exponential
mass
transfer
models
provide
theoretical
basis
for
targeted
prevention
control.
project,
climate
chamber
method
conduct
120
h
continuous
sampling
concentration
The
TD-GC-MS
analyze
tubes,
concentration-time
data
were
fitted
models.
emission
factor
equation
obtained
model.
critical
physical
parameters,
such
initial
internal
C0,
diffusion
rate
Dm,
solid-phase/gas-phase
partition
coefficient
K,
Finally,
found
that
acetal
easily
rapidly
released
into
air,
while
phenol
slowly
ambient
air.
two
sets
an
essential
control,
well
methodological
path
studying
different
substances.
