Building and Environment,
Год журнала:
2024,
Номер
255, С. 111442 - 111442
Опубликована: Март 25, 2024
The
impact
of
indoor
air
quality
on
human
health
is
gaining
importance
as
people
spend
90%
their
time
indoors.
It
has
been
established
that
occupancy
a
significant
contributor
to
Volatile
Organic
Compound
(VOC)
concentrations
and
concern
regarding
occupant
health,
yet
VOC
emissions
remain
largely
uncharacterised.
In
the
current
study,
we
review
recent
research
examines
contributions
humans
profile
in
occupied
spaces,
with
focus
study
characteristics.
This
investigation
identified
hierarchy
factors
contributing
inter-study
variations
biogenic
(HVOC)
levels
measured
We
found
variation
reported
HVOC
are
related
sampling
techniques
used,
test
conditions,
sample
analysis.
Contrasting
findings
issues
such
effect
nutrition
smoking
discussed.
Conclusions
were
reached
about
advancements
nature
results
need
use
larger
datasets,
recommendations
global
guidelines
future
testing
have
made.
advocate
for
unified
approach
studies,
promoting
more
coordinated
data
collection
reporting
fostering
development
impactful
applications.
Urban Water Journal,
Год журнала:
2024,
Номер
21(3), С. 380 - 392
Опубликована: Янв. 12, 2024
In
late
December
2019,
a
novel
coronavirus,
COVID
−19
originated
in
Wuhan
city
of
China,
and
significant
improvement
not
only
the
air
quality
but
also
water
quality.
Therefore,
current
study
demonstrates
changes
parameters
Ghaggar
river,
Punjab,
India.
The
variations
river
have
been
examined
during
pre-,
during,
post-pandemic
periods.
maximum
temperature
for
all
monitoring
stations
was
between
28
to
37°C
pandemic
period,
whereas
dissolved
oxygen
value
varied
from
3
7
mg/L.
pH
obtained
reported
be
7.7
8.0,
except
chhatbir
station
(7.6).
biochemical
demand
found
18–53
Strong
positive
correlations
were
observed
total
coliform
fecal
pre
(0.76)
(0.89)
Similar
recorded
BOD
conductivity
(0.75)
(0.58)
Case Studies in Chemical and Environmental Engineering,
Год журнала:
2023,
Номер
8, С. 100417 - 100417
Опубликована: Июль 7, 2023
In
December
2019,
a
novel
coronavirus
disease
(COVID-19)
outbreak
occurred
due
to
human
respiratory
virus
that
originated
in
the
city
of
Wuhan,
China.
During
COVID-19
lockdown,
there
was
significant
improvement
air
quality
across
world.
We
analyzed
data
for
BTEX
over
three
years
(January
2019
2021)
with
pairwise
comparison
and
trend
analysis
pre-,
during,
post-pandemic
periods.
This
study
demonstrates
substantial
changes
concentration
VOCs
urban
area
(Punjab)
lockdown
effects.
The
results
indicate
reduction
mean
TVOCs
all
monitoring
stations
found
be
8.89
±
1.80,
5.59
1.71,
5.57
1.43
μg/m3
before,
post-pandemic,
respectively.
level
declined
by
−43%
during
period
compared
previous
years.
A
higher
T/B
ratio
Patiala
(2.97
μg/m3)
before
pandemic,
which
may
vehicle
emission
sources.
LCR
values
benzene
were
children
than
males
females,
indicated
possible
risk.
exceeded
prescribed
value
CPCB
children.
