Water Science & Technology,
Journal Year:
2023,
Volume and Issue:
88(12), P. 3095 - 3109
Published: Dec. 8, 2023
Abstract
The
hexachlorocyclohexane
isomers
(HCH)
are
long-banned
pesticides.
Even
though
their
use
has
been
prohibited
for
decades,
presence
in
the
environment
is
still
reported
worldwide.
Wetland
+
a
registered
trademark
of
remedial
treatment
technology
consisting
an
aerobic
sedimentary
tank,
permeable
reactive
barrier,
biosorption
system,
and
wetland.
This
proven
method
combines
reductive
known
from
PRBs
with
natural
wetland
self-cleaning
processes.
average
efficiency
system
96.8%
chlorobenzenes
(ClB)
81.7%
HCH,
during
first
12
months
operation.
genes
encoding
enzymes
involved
degradation
HCH
compounds
indicates
that
removal
ClB
occurs
not
only
by
chemical
but
also
through
anaerobic
combining
biodegradation.
Changes
abundance
composition
diatom
community
were
found
to
be
suitable
indicators
water
quality
impact
operation
on
ecosystem.
system's
annual
exhibited
markedly
higher
number
species
closing
profiles
Ostrovský
Creek,
effluent
recipient.
International Journal of Environmental Research and Public Health,
Journal Year:
2022,
Volume and Issue:
19(19), P. 12547 - 12547
Published: Oct. 1, 2022
In
this
study,
eleven
organochlorine
pesticides
(OCPs)
in
fresh
vegetables
the
Changchun
suburb
were
investigated,
and
their
potential
health
risks
evaluated.
The
average
concentrations
of
OCPs
edible
parts
found
following
descending
order:
Σhexachlorocyclohexanes
(ΣHCHs)
(6.60
µg·kg−1)
>
Σdichlorodiphenyltrichloroethanes
(ΣDDTs)
(5.82
ΣChlordanes
(2.37
heptachlor
(0.29
µg·kg−1).
Moreover,
different
types
exceeded
maximum
residue
limits
(MRLs),
exceeding
rates
various
decreased
leafy
(19.12%)
root
(18.75%)
fruit
(3.85%).
proportions
MRL
Welsh
onion
(22.50%)
radish
Chinese
cabbage
(14.29%)
pepper
(6.90%)
cucumber
(3.23%)
eggplant
(2.94%)
tomato
(2.78%).
sources’
identification
results
showed
that
DDTs
came
mainly
from
newly
imported
technical
dicofol,
while
HCHs
originated
lindane.
For
both
adults
children,
target
hazard
quotients
(avg.
THQ)
all
less
than
1,
index
HI)
values
0.043
0.036,
respectively.
There
no
significant
associated
with
OCP
exposure
for
inhabitants
study
area.
Water Science & Technology,
Journal Year:
2023,
Volume and Issue:
88(12), P. 3095 - 3109
Published: Dec. 8, 2023
Abstract
The
hexachlorocyclohexane
isomers
(HCH)
are
long-banned
pesticides.
Even
though
their
use
has
been
prohibited
for
decades,
presence
in
the
environment
is
still
reported
worldwide.
Wetland
+
a
registered
trademark
of
remedial
treatment
technology
consisting
an
aerobic
sedimentary
tank,
permeable
reactive
barrier,
biosorption
system,
and
wetland.
This
proven
method
combines
reductive
known
from
PRBs
with
natural
wetland
self-cleaning
processes.
average
efficiency
system
96.8%
chlorobenzenes
(ClB)
81.7%
HCH,
during
first
12
months
operation.
genes
encoding
enzymes
involved
degradation
HCH
compounds
indicates
that
removal
ClB
occurs
not
only
by
chemical
but
also
through
anaerobic
combining
biodegradation.
Changes
abundance
composition
diatom
community
were
found
to
be
suitable
indicators
water
quality
impact
operation
on
ecosystem.
system's
annual
exhibited
markedly
higher
number
species
closing
profiles
Ostrovský
Creek,
effluent
recipient.
