Sensors,
Journal Year:
2022,
Volume and Issue:
22(21), P. 8522 - 8522
Published: Nov. 5, 2022
Microbial
mediator
biosensors
for
surface
water
toxicity
determination
make
it
possible
to
carry
out
an
early
assessment
of
the
environmental
object’s
quality
without
time-consuming
standard
procedures
based
on
test-organisms,
and
provide
broad
opportunities
receptor
element
modifying
depending
required
operational
parameters
analyzer.
Four
microorganisms
with
substrate
specificity
nine
electron
acceptors
were
used
form
a
system
assessment.
Ferrocene
was
most
effective
according
its
high
rate
constant
interaction
(0.33
±
0.01
dm3/(g
×
s)
yeast
Saccharomyces
cerevisiae).
Biosensors
tested
samples
containing
four
heavy
metal
ions
(Cu2+,
Zn2+,
Pb2+,
Cd2+),
two
phenols
(phenol
p-nitrophenol),
three
natural
samples.
The
«ferrocene-
Escherichia
coli»
«ferrocene-Paracoccus
yeei,
E.
coli
association»
systems
showed
good
stability
relative
deviation
6.9
7.3%
(14
measurements)
reproducibility
7
5.2%
using
copper
(II)
as
reference
toxicant.
Biosensor
analysis
these
shown
highly
correlate
results
method
Chlorella
algae
test
object.
Developed
allow
valuation
polluted
water’s
impact
ecosystem
via
influence
bacteria
in
system.
could
be
toxicological
monitoring
waters.
ACS ES&T Water,
Journal Year:
2021,
Volume and Issue:
1(3), P. 462 - 478
Published: Feb. 15, 2021
The
release
of
chemicals
into
water
systems
has
resulted
in
pollution
many
parts
the
world,
threatening
human
health
and
aquatic
ecosystems.
Sources
chemical
discharge
include
industry,
agricultural,
wastewater
treatment
plants,
stormwater
overflows.
To
combat
pollution,
European
Union
introduced
several
directives
that
set
concentration
limits
for
drinking
water,
surface
groundwater.
meet
these
limits,
it
is
essential
rapid,
reliable,
sensitive
analytical
detection
be
developed
put
use.
This
Review
presents
progress
made
development
electrochemical
biosensors
environmental
toxicants
(pesticides
heavy
metals)
over
past
seven
years
(2014–2020).
For
those
unfamiliar
with
this
field
research,
concept
a
biosensor
followed
by
critical
evaluation
their
performance
detecting
toxicants.
Current
challenges
are
discussed
as
well
potential
avenues
future
including
demands
enhanced
performance,
improved
stability
shelf
life,
greater
integration
microfluidic
devices
wireless
database
technologies
remote
sensing
applications.
We
believe
will
beneficial
enhance
awareness
appreciation
role
can
play
protecting
our
environment
resources.
Biosensors,
Journal Year:
2022,
Volume and Issue:
12(7), P. 551 - 551
Published: July 21, 2022
The
release
of
chemicals
and
microorganisms
from
various
sources,
such
as
industry,
agriculture,
animal
farming,
wastewater
treatment
plants,
flooding,
into
water
systems
have
caused
pollution
in
several
parts
our
world,
endangering
aquatic
ecosystems
individual
health.
World
Health
Organization
(WHO)
has
introduced
strict
standards
for
the
maximum
concentration
limits
nutrients
drinking
water,
surface
groundwater.
It
is
crucial
to
rapid,
sensitive,
reliable
analytical
detection
monitor
level
regularly
meet
standard
limit.
Electrochemical
biosensors
are
advantageous
devices
or
tools
that
convert
a
bio-signal
by
biorecognition
elements
significant
electrical
response.
Thanks
micro/nano
fabrication
techniques,
electrochemical
continuous,
real-time
attracted
increasing
attention
among
researchers
users
worldwide.
These
take
advantage
easy
operation,
portability,
rapid
They
can
also
be
miniaturized,
long-life
span
quick
response
time,
possess
high
sensitivity
selectivity
considered
portable
biosensing
assays.
special
importance
due
their
great
advantages
affordability,
simplicity,
ability
detect
at
on-site.
This
review
paper
concerned
with
basic
concepts
applications
quality
monitoring,
inorganic
chemicals,
nutrients,
microorganisms’
pollution,
organic
pollutants,
especially
developing
real-time/online
systems.
biosensors,
different
modification
bio-recognition
(BRE),
methods,
specific
monitoring
reviewed
thoroughly
this
article.
ChemElectroChem,
Journal Year:
2020,
Volume and Issue:
7(12), P. 2513 - 2526
Published: April 24, 2020
Abstract
Water
toxicity
assessment
is
of
great
importance
for
monitoring
water
quality
and
safeguarding
ecological
health.
Microbial
biosensors,
which
use
microorganisms
as
the
bioreceptor,
offer
a
promising
complementary
method
evaluation.
The
present
Minireview
has
particular
emphasis
on
microbial
biosensors
that
redox
mediators
signal
indicators
their
performance
acute
assessment.
principles,
fabrication
methods,
recent
developments
electrochemical
are
systematically
summarized.
In
addition,
application
fuel
cells
in
biological
oxygen
demand
biotoxicity
determination
also
briefly
introduced.
main
hurdles
hinder
on‐site
discussed.
With
unceasing
efforts
improvement
sensitivity
stability,
to
play
more
crucial
roles
Biosensors,
Journal Year:
2021,
Volume and Issue:
11(12), P. 478 - 478
Published: Nov. 25, 2021
Heavy
metal
pollution
remains
a
major
concern
for
the
public
today,
in
line
with
growing
population
and
global
industrialization.
ion
(HMI)
is
threat
to
human
environmental
safety,
even
at
low
concentrations,
thus
rapid
continuous
HMI
monitoring
essential.
Among
sensors
available
detection,
field-effect
transistor
(FET)
sensor
demonstrates
promising
potential
fast
real-time
detection.
The
aim
of
this
review
provide
condensed
overview
contribution
certain
semiconductor
substrates
development
chemical
biosensor
FETs
detection
past
decade.
A
brief
introduction
FET
along
its
construction
configuration
presented
first
part
review.
Subsequently,
deployment
issue
intrinsic
limitation
screening
effect
are
also
discussed,
solutions
overcome
these
shortcomings
summarized.
Later,
we
summarize
strategies
HMIs’
electrical
mechanisms,
sensing
performance
on
nanomaterial
transducers,
including
silicon,
carbon
nanotubes,
graphene,
AlGaN/GaN,
transition
dichalcogenides
(TMD),
black
phosphorus,
organic
inorganic
semiconductor.
Finally,
concerns
suggestions
regarding
real
samples
using
highlighted
conclusion.
ACS Sensors,
Journal Year:
2021,
Volume and Issue:
6(7), P. 2674 - 2681
Published: June 29, 2021
The
development
of
simple
and
rapid
toxicity
detection
methods
has
important
practical
significance.
In
this
work,
a
dual-signal
method
with
colorimetric
electrochemical
properties
for
water
was
proposed
the
first
time
based
on
color
reaction
between
Escherichia
coli
(E.
coli)
p-benzoquinone
(BQ).
Here,
E.
used
as
biocatalyst
BQ
mediator.
An
IC50
value
0.75
mg
L–1
Cu2+
obtained
using
two-step
method.
Strikingly,
could
also
be
estimated
visually
by
naked
eye,
minimum
limit
3.2
Cu2+.
extends
function
BQ,
result
is
more
reliable
than
traditional
single-signal
This
shows
certain
application
prospects.
