Indoor Air,
Journal Year:
2017,
Volume and Issue:
28(1), P. 198 - 212
Published: Aug. 23, 2017
Dampness
affects
a
substantial
percentage
of
homes
and
is
associated
with
increased
risk
respiratory
ailments;
yet,
the
effects
dampness
on
indoor
chemistry
are
largely
unknown.
We
hypothesize
that
presence
water-soluble
gases
their
aqueous
processing
alters
chemical
composition
air
thereby
inhalation
dermal
exposures
in
damp
homes.
Herein,
we
use
existing
literature
new
measurements
to
examine
plausibility
this
hypothesis,
summarize
evidence,
identify
key
knowledge
gaps.
While
volatile
organic
compounds
(VOCs)
abundant,
(WSOGs)
not.
found
concentrations
total
WSOGs
were,
average,
15
times
higher
inside
than
immediately
outside
(N
=
13).
provide
insights
into
WSOG
likely
be
present
indoors
using
peer-reviewed
from
atmospheric
chemistry.
Finally,
discuss
types
may
occur
surfaces
speculate
how
could
affect
exposures.
Liquid
water
quantities,
identities
compounds,
dominant
chemistry,
fate
products
poorly
understood.
These
limitations
hamper
our
ability
determine
Environmental Science & Technology,
Journal Year:
2021,
Volume and Issue:
55(3), P. 1769 - 1778
Published: Jan. 25, 2021
The
selective
sorption
of
dissolved
organic
matter
(DOM)
on
minerals
is
a
widespread
geochemical
process
in
the
natural
environment.
Recent
studies
have
explored
influence
this
molecular
fractionation
DOM
at
water–mineral
interfaces.
However,
it
remains
unclear
how
affects
photochemistry
DOM.
Here,
we
demonstrate
that
adsorptive
ferrihydrite
greatly
reduces
its
photoproduction
reactive
oxygen
species
(ROS)
including
1O2,
O2•–,
and
•OH
normalized
to
carbon
(ROSOC).
ROSOC
for
were
positively
correlated
with
abundances
polyphenols
oxygenated
polycyclic
aromatics,
which
also
observed
using
Fourier
transform
ion
cyclotron
resonance
mass
spectrometry
(FT-ICR
MS)
analysis
be
preferentially
sequestered
by
ferrihydrite.
molecules
remained
solution
after
adsorption
displayed
low
levels
ROSOC.
induced
therefore
influenced
components
significantly
reduced
photoreactive
fractions
waters.
These
results
are
very
important
promoting
our
understanding
effects
biogeochemical
features,
behaviors,
implications
Atmospheric chemistry and physics,
Journal Year:
2022,
Volume and Issue:
22(8), P. 5223 - 5251
Published: April 21, 2022
Abstract.
Sea
spray
aerosol
is
one
of
the
major
sources
atmospheric
particulate
matter
globally.
It
has
increasingly
been
recognized
that
organic
derived
from
ocean
biological
precursors
contributes
significantly
to
composition
submicron
sea
and
may
modify
impacts
on
clouds
climate.
This
paper
describes
implementation
OCEANFILMS
(Organic
Compounds
Ecosystems
Aerosols:
Natural
Films
Interfaces
via
Langmuir
Molecular
Surfactants)
parameterization
for
emissions
in
a
global
Earth
system
model,
Energy
Exascale
System
Model
(E3SM).
physically
based
model
links
chemistry
with
biogeochemistry
using
partitioning
approach.
We
describe
details
within
E3SM,
compare
simulated
fields
observations,
investigate
Four
sensitivity
cases
are
tested,
which
either
strictly
add
or
replace
salt
(in
mass
number)
fully
internally
externally
mixed
salt.
The
simulation
mixed,
added
organics
agrees
reasonably
well
observed
seasonal
cycles
marine
selected
as
default
configuration
E3SM.
In
this
configuration,
an
additional
source
cloud
condensation
nuclei,
adding
up
30
cm−3
Southern
Ocean
boundary-layer
nuclei
concentrations
(supersaturation
=
0.1
%).
addition
new
strengthens
shortwave
radiative
cooling
by
−0.36
W
m−2
annual
mean
more
than
−3.5
summertime
zonal
forcing
Ocean,
maximum
about
−4
around
50–60∘
S.
consistent
previous
top-down,
satellite-based
empirical
estimate
over
Ocean.
Through
its
mechanistic
approach,
offers
path
towards
improved
understanding
feedbacks
between
biology,
matter,
Small,
Journal Year:
2023,
Volume and Issue:
19(31)
Published: Jan. 6, 2023
The
discovery
of
carbon-based
quantum
dots
(CQDs)
has
allowed
opportunities
for
fluorescence
bioimaging,
tumor
diagnosis
and
treatment,
photo-/electro-catalysis.
Nevertheless,
in
the
existing
reviews
related
to
"bottom-up"
approaches,
attention
is
mainly
paid
applications
CQDs
but
not
formation
mechanism
CQDs,
which
derived
from
high
complexities
during
synthesis
CQDs.
Among
various
synthetic
methods,
using
small
molecules
as
"building
blocks",
development
a
approach
promoted
structural
design,
modulation
photoluminescence
properties,
control
interfacial
properties
On
other
hand,
many
works
have
demonstrated
blocks"-dependent
In
this
review,
one
most
important
variables,
relationships
among
intrinsic
blocks"
are
summarized.
topology,
chirality,
free
radical
process
selected
descriptors
blocks".
This
review
focuses
on
induction
summary
recent
research
results
process.
Moreover,
several
empirical
rules
pertaining
thereto
also
proposed.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(10), P. 6580 - 6590
Published: March 1, 2024
The
multiphase
oxidation
of
sulfur
dioxide
(SO2)
to
form
sulfate
is
a
complex
and
important
process
in
the
atmosphere.
While
conventional
photosensitized
reaction
mainly
explored
bulk
medium
reported
be
one
drivers
trigger
atmospheric
production,
how
this
scheme
functionalizes
at
air–water
interface
(AWI)
aerosol
remains
an
open
question.
Herein,
employing
advanced
size-controllable
microdroplet-printing
device,
surface-enhanced
Raman
scattering
(SERS)
analysis,
nanosecond
transient
adsorption
spectrometer,
molecular
level
theoretical
calculations,
we
revealed
previously
overlooked
interfacial
role
SO2
humic-like
substance
(HULIS)
aerosol,
where
3–4
orders
magnitude
increase
formation
rate
was
speculated
cloud
relevant-sized
particles
relative
bulk-phase
medium.
rapid
battery
reactive
oxygen
species
(ROS)
comes
from
accelerated
electron
transfer
AWI,
excited
triplet
state
HULIS
(3HULIS*)
incomplete
solvent
cage
can
readily
capture
electrons
HSO3–
way
that
more
efficient
than
fully
blocked
by
water
molecules.
This
phenomenon
could
explained
significantly
reduced
desolvation
energy
barrier
required
for
reagents
residing
AWI
region
with
shell.
Atmospheric chemistry and physics,
Journal Year:
2024,
Volume and Issue:
24(6), P. 3729 - 3742
Published: March 26, 2024
Abstract.
Dry
deposition
of
ozone
(O3)
to
the
ocean
surface
and
ozonolysis
organics
in
sea
microlayer
(SSML)
are
potential
sources
volatile
organic
compounds
(VOCs)
marine
atmosphere.
We
use
a
gas
chromatography
system
coupled
Vocus
proton-transfer-reaction
time-of-flight
mass
spectrometer
determine
chemical
composition
product
yield
select
VOCs
formed
from
coastal
seawater
collected
Scripps
Pier
La
Jolla,
California.
Laboratory-derived
results
interpreted
context
direct
VOC
vertical
flux
measurements
made
at
Pier.
The
dominant
products
laboratory
experiments
largest
non-sulfur
emission
fluxes
measured
field
correspond
CxHy+
CxHyOz+
ions.
Gas
(GC)
analysis
suggests
that
C5–C11
oxygenated
VOCs,
primarily
aldehydes,
contributors
these
ion
signals.
In
laboratory,
using
flow
reactor
experiment,
we
0.43–0.62.
Pier,
maximum
0.04–0.06.
Scaling
lab
yields
for
an
average
O3
structure
source
10.7
167
Tg
C
yr−1,
competitive
with
DMS
approximately
20.3
yr−1.
This
study
reveals
reactivity
dissolved
carbon
can
be
significant
atmosphere
warrants
further
investigation
into
speciated
different
samples
reactivities
secondary
aerosol
(SOA)
molecules
marine-relevant,
low
NOx
conditions.
Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(19), P. 10924 - 10963
Published: Aug. 23, 2024
Aerosol
and
aqueous
particles
are
ubiquitous
in
Earth's
atmosphere
play
key
roles
geochemical
processes
such
as
natural
chemical
cycles,
cloud
fog
formation,
air
pollution,
visibility,
climate
forcing,
etc.
The
surface
tension
of
atmospheric
can
affect
their
size
distribution,
condensational
growth,
evaporation,
exchange
chemicals
with
the
atmosphere,
which,
turn,
important
above-mentioned
processes.
However,
because
measuring
this
quantity
is
challenging,
its
role
was
dismissed
for
decades.
Over
last
15
years,
field
research
has
seen
some
tremendous
developments
rapidly
evolving.
This
review
presents
state-of-the-art
subject
focusing
on
experimental
approaches.
It
also
a
unique
inventory
adsorption
isotherms
over
130
mixtures
organic
compounds
water
relevance
model
development
validation.
Potential
future
areas
seeking
to
better
determine
particles,
constrain
laboratory
investigations,
or
understand
various
processes,
discussed.
We
hope
that
appeals
not
only
scientists
but
researchers
from
other
fields,
who
could
help
identify
new
approaches
solutions
current
challenges.
Environmental Science & Technology Letters,
Journal Year:
2016,
Volume and Issue:
3(2), P. 67 - 72
Published: Jan. 26, 2016
Organosulfates
are
tracers
for
secondary
organic
aerosol
(SOA)
formation.
We
propose
a
new
mechanism
of
organosulfur
product
formation
in
the
atmosphere,
which
sulfur
dioxide
(SO2)
reacts
directly
with
alkenes.
The
experiments
were
conducted
at
gas–liquid
interface
coated-wall
flow
tube
reactor.
It
was
shown,
first
time,
that
SO2
efficiently
unsaturated
bond
oleic
acid
under
atmospheric
conditions
(without
ozone),
leading
to
C9
and
C18
products.
associated
uptake
coefficients
excess
10–6,
decreasing
initial
concentration
increasing
humidity.
These
results
might
explain
fraction
products
detected
particles.
This
work
tends
elucidate
role
organosulfates'
interfacial
chemistry
as
potentially
unrecognized
pathway
their
contribution
SOA
formation;
however,
it
remains
be
determined
how
significant
this
is
overall
organosulfate
abundances
measured
ambient
aerosol.
