Given
that
people
spend
on
average
more
than
80%
of
their
time
indoors,
monitoring
indoor
air
quality
(IAQ)
is
the
utmost
importance
for
safeguard
human
health.
Indeed,
due
to
penetration
from
outdoors
and
presence
specific
sources,
poor
IAQ
not
uncommon.
The
use
portable
cleaners
(PACs)
one
many
options
improve
IAQ.
market
offers
products,
but
all
them
have
reliable
documentation
effectiveness.
Literature
standard
methods
testing
PACs
toward
pollutants
require
extensive
resources.
In
this
work,
we
developed
a
new
laboratory
scale
methodology
based
small,
easy
use,
economical
batch
system
test
efficiency
PACs.
With
method,
three
commercial
were
successfully
tested
effectiveness
volatile
organic
compounds
(VOCs)
particulate
matter
(PM).
method
proved
successful,
results
highlighted
conducting
these
tests,
in
addition
field
investigations.
Environmental Research,
Год журнала:
2024,
Номер
261, С. 119713 - 119713
Опубликована: Июль 31, 2024
Indoor
air
quality
(IAQ)
in
educational
facilities
is
crucial
due
to
the
extended
time
students
spend
those
environments,
affecting
their
health,
academic
performance,
and
attendance.
This
paper
aimed
review
relevant
parameters
(building
characteristics
factors
related
with
occupancy
activities)
for
assessing
IAQ
facilities,
identify
consider
when
performing
an
monitoring
campaign
schools.
It
also
intended
literature
gaps
suggest
future
research
directions.
A
narrative
was
conducted,
focusing
on
seven
key
parameters:
building
location,
layout
construction
materials,
ventilation
cleaning
systems,
finishing
occupant
demographics,
occupancy,
activities.
The
findings
revealed
that
carbon
dioxide
(CO2)
levels
were
predominantly
influenced
by
classroom
rates,
while
particulate
matter
(PM)
concentrations
significantly
building's
design,
Furthermore,
this
highlighted
presence
of
other
pollutants,
such
as
trace
metals,
polycyclic
aromatic
hydrocarbons
(PAHs),
monoxide
(CO),
nitrogen
(NO2),
ozone
(O3),
radon,
linking
them
specific
within
school
environment.
Different
patterns,
consequently
different
parameters,
observed
various
areas,
including
classrooms,
canteens,
gymnasiums,
computer
rooms,
laboratories.
While
substantial
exists
schools,
significant
still
remain.
study
need
more
studies
middle
high
well
indoor
microenvironments
settings
beyond
classrooms.
Additionally,
it
underscored
comprehensive
exposure
assessments,
long-term
studies,
impacts
new
materials
effects
secondary
reactions
surfaces.
Seasonal
variations
implications
emerging
technologies
identified
requiring
further
investigation.
Addressing
through
targeted
considering
most
updated
standards
guidelines
IAQ,
could
lead
define
effective
strategies
improving
safeguarding
students'
health
performance.
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 13, 2025
Tobacco
smoke,
a
complex
mixture
of
particulate
matter
(PM)
and
gaseous
pollutants,
poses
serious
health
risks
remains
significant
challenge
for
indoor
air
purification.
Photocatalytic
oxidation
(PCO)
technology
has
emerged
as
an
effective
strategy
pollutant
removal,
but
its
application
in
real
tobacco
smoke
purification
associated
impacts
underexplored.
Herein,
we
investigated
the
simultaneous
removal
PM
volatile
organic
compounds
(VOCs)
from
using
PCO
purifier.
The
purifier
exhibited
superior
achieving
99%
efficiency
within
10
min
reducing
ultrafine
concentrations
to
one-tenth
those
observed
with
high
(HEPA)
filtration.
63
main
VOCs,
predominantly
oxygenated
were
identified
exhibiting
over
300
min.
Furthermore,
demonstrated
exceptional
stability
long-term
durability
across
varying
humidity
levels
concentrations.
hazard
index
(HI)
was
quantified
evaluate
smoke.
reduced
HI
by
95%
120
min,
demonstrating
effectiveness
mitigating
exposure
risks.
Additionally,
major
primarily
established
four
key
indicator
(i.e.,
2,5-dimethylfuran,
2,3-butanedione,
n-nitrosomethylethylamine,
isocyanic
acid),
which
reliably
estimated
overall
during
study
provides
promising
multiple
pollutants
environment
along
convenient
method
assessing
impacts.
Building and Environment,
Год журнала:
2024,
Номер
257, С. 111540 - 111540
Опубликована: Апрель 16, 2024
The
use
of
air
cleaners
to
enhance
indoor
quality
under
reduced
ventilation
for
energy
conservation
has
increasingly
garnered
attention.
However,
the
effects
on
removal
gaseous
compounds
require
further
research.
Reduced
can
increase
pollution
caused
by
emissions
from
humans
(bioeffluents);
however,
little
is
known
about
performance
regarding
this
type
pollution.
Thus,
study
addressed
gap.
Two
male
participants
sitting
in
a
stainless-steel
chamber
served
as
source
bioeffluents
at
two
temperatures
(23oC
and
28oC),
gas-phase
cleaner
was
either
operational
or
idled.
Thirteen
evaluated
quality,
chemical
analyses
were
performed.
protocols
partially
followed
ISO
Standards
16000-28
16000-44.
results
indicate
that
pollutants
emitted
decreased
when
operating.
In
addition,
sensory
assessments
showed
decrease
odour
intensity
percentage
dissatisfaction
with
operating
cleaner.
clean
delivery
rate
higher
28ºC,
perceived
freshness
also
improved
temperature.
Our
findings
show
operations
effectively
improve
polluted
human
bioeffluents.
validation
actual
environments
recommended.
