Environment & Health,
Год журнала:
2023,
Номер
2(1), С. 52 - 61
Опубликована: Дек. 5, 2023
The
self-heating
lunch
box
(SHLB)
is
a
kind
of
popular
instant
food
in
China,
yet
little
known
about
the
associated
chemical
release
risk
during
its
heating
process.
In
this
study,
we
investigated
organophosphate
esters
(OPEs)
original
unheated
(UF),
SHLB-heated
processed
(HF)
and
potential
OPE
from
SHLB
packaging
materials.
Significantly
higher
concentrations
OPEs
were
observed
HF
(267
±
246
ng/g
dry
weight
(dw))
than
UF
(163
211
dw)
(p
<
0.001),
suggesting
an
introduction
additional
processes.
Tris(2-chloroethyl)
phosphate,
triethyl
tris(2-chloroisopropyl)
phosphate
exhibited
highest
absolute
increased
amounts,
with
137,
48.8,
149%
growth
UF,
respectively.
Migration
testing
revealed
that
materials
rich
can
considerable
into
simulates
(range,
14.7–90.8
ng/g;
mean,
47.9
21.8).
Influencing
factors
(temperature,
contact
time,
oily
food)
on
migration
to
assessed.
Higher
temperature
longer
time
contents
simulates.
Moreover,
presence
abundant
significant
correlations
among
different
0.05)
suggested
contamination
happened
processing
storage.
With
one
meal
day,
12-fold
increase
intake
was
for
humans
compared
those
following
traditional
dietary
habit.
high-exposure
(95th
percentile)
scenario,
hazard
quotients
nine
ranged
0.00005
0.05.
Our
results
exposure
pathway
should
be
particularly
paid
attention
specific
subpopulations
prefer
Environmental Science & Technology,
Год журнала:
2024,
Номер
unknown
Опубликована: Фев. 22, 2024
Despite
the
increasing
health
risks
shown
by
continuous
detection
of
organophosphate
esters
(OPEs)
in
biota
recent
years,
information
on
occurrence
and
potential
OPEs
marine
mammals
remains
limited.
This
study
conducted
first
investigation
into
body
burdens
10
traditional
(tOPEs)
five
emerging
(eOPEs)
cetacean
species
(n
=
84)
from
northern
South
China
Sea
(NSCS)
during
2005–2021.
All
OPEs,
except
for
2-ethylhexyl
diphenyl
phosphate
(EHDPHP),
were
detected
these
cetaceans,
indicating
their
widespread
NSCS.
Although
levels
∑10tOPEs
humpback
dolphins
remained
stable
2005
to
2021,
concentrations
∑5eOPEs
showed
a
significant
increase,
suggesting
growing
demand
new-generation
China.
Dolphins
proximity
urban
regions
generally
exhibited
higher
OPE
than
those
rural
areas,
mirroring
environmental
trends
occurring
this
area.
congeners,
EHDPHP,
maternal
transfer
ratio
>1,
that
dolphin
placenta
may
not
be
an
efficient
barrier
OPEs.
The
observed
correlations
between
hormones
(triiodothyronine,
thyroxine,
testosterone)
indicated
exposures
might
have
endocrine
disruption
effects
population.
ACS ES&T Engineering,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 5, 2024
The
quenching
method
is
widely
utilized
to
evaluate
the
contribution
of
reactive
species;
however,
its
validity
has
recently
been
questioned.
primary
role
superoxide
(O2•–)
in
pollutant
degradation
remains
controversial
due
low
reactivity.
To
ascertain
suitability
and
ability
O2•–,
a
simple
efficient
O2•–
generation
system
was
built
using
p-benzoquinone
(p-BQ)
as
probe
with
disodium
hydrogen
phosphate–dimethyl
sulfoxide
(DHP–DMSO).
results
demonstrated
that
accountable
for
p-BQ
transformation
DHP–DMSO,
can
also
be
generated
various
alkaline-organic
solvent
(methanol,
ethanol,
iso-propanol,
tert-butanol,
acetonitrile,
acetone,
chloroform,
tetrahydrofuran)
systems,
revealing
these
reagents
do
not
scavenge
O2•–.
Superoxide
dismutase
limited
on
presence
hydroxyl
radicals
(•OH).
Some
organic
solvents
produce
when
stimulated
by
•OH.
This
serves
reminder
exercise
caution
employing
quenchers.
exhibited
insufficient
capability
majority
eight
pollutants
tested.
relevance
quickly
discerned
DHP–DMSO.
study
holds
significant
importance
accurately
evaluating
species.
Environmental Science & Technology Letters,
Год журнала:
2024,
Номер
11(9), С. 920 - 930
Опубликована: Авг. 13, 2024
Tris(2,4-di-tert-butylphenyl)
phosphite
(AO168)
is
a
widely
utilized
organophosphite
antioxidant
in
the
field
of
plastics.
Throughout
production
and
usage
processes,
AO168
can
undergo
oxidation
convert
into
tris(2,4-di-tert-butylphenyl)
phosphate
(AO168═O),
which
has
been
identified
as
one
novel
organophosphate
esters
(OPEs).
AO168═O
now
extensively
present
environment,
with
concentrations
generally
exceeding
those
traditional
OPEs
such
triphenyl
tri(2-chloroisopropyl)
phosphate.
Consequently,
emerged
significant
concern
that
receiving
attention
from
scientific
community.
However,
there
exists
some
controversy
regarding
formation
mechanisms
potential
risks
AO168═O.
This
Review
provides
comprehensive
overview
for
first
time
environmental
occurrence,
pathways,
toxicities,
linked
to
AO168═O,
aiming
assist
researchers
policymakers
obtaining
an
unbiased
description
its
impacts
on
both
environment
human
health.
Given
numerous
unresolved
aspects
surrounding
along
wide
greater
should
be
devoted
this
emerging
contaminant.
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(31), С. 13648 - 13657
Опубликована: Июль 29, 2024
Organophosphorus
flame
retardants
(OPFRs)
such
as
triphenyl
phosphate
(TPHP)
and
tris(1,3-dichloro-2-propyl)
(TDCIPP)
were
reported
to
impair
cardiac
function
in
fish.
However,
limited
information
is
available
regarding
their
cardiotoxic
mechanisms.
Using
rare
minnow
(Gobiocypris
rarus)
a
model,
we
found
that
both
TPHP
TDCIPP
exposures
decreased
heart
rate
at
96
h
postfertilization
(hpf)
embryos.
Atropine
(an
mAChR
antagonist)
can
significantly
attenuate
the
bradycardia
caused
by
TPHP,
but
only
marginally
attenuated
treatment,
suggesting
TDCIPP-induced
independent
of
mAChR.
Unlike
TDCIPP,
although
TPHP-induced
could
be
reversed
transferring
larvae
clean
medium,
inhibitory
effect
AChE
activity
persisted
compared
hpf,
indicating
existence
other
regulatory
Transcriptome
profiling
revealed
cardiotoxicity-related
pathways
treatments
24
72
hpf
embryos/larvae.
Similar
transcriptional
alterations
also
confirmed
hearts
adult
Further
studies
verified
interfere
with
Na+/Ca2+
transport
lead
disorders
excitation–contraction
coupling
larvae.
Our
findings
provide
useful
clues
for
unveiling
differential
mechanisms
OPFRs
identifying
abnormal
one
select
few
known
factors
sufficient
fish
function.
