Environmental Health Insights,
Journal Year:
2020,
Volume and Issue:
14
Published: Jan. 1, 2020
Heavy
metal
contamination
and
related
risks
for
the
environment
human
health
are
matters
of
increasing
concern.The
levels
4
heavy
metals
(Cr,
Cd,
Pb,
As)
were
evaluated
in
2
water
types
(surface
well),
seafood
(tiger
shrimp,
stuffed
snail,
snake-head
fish,
catfish),
27
vegetables
(12
leafy
vegetables,
pea
plants,
tuber
7
herbs)
that
commonly
consumed
northern
coastal
communes
located
Vietnam.
Atomic
absorption
spectrometry
was
employed
quantification.The
mean
concentrations
detected
water,
seafood,
vegetable
samples
exceeded
national
permitted
standards
World
Health
Organization
(WHO)
recommendation
values
by
at
least
2-fold,
2.5-fold,
5-fold
surface
well
respectively.
The
all
higher
than
standards.
decreased
with
distance
between
sample
collection
point
pollution
source.This
is
first
report
common
sources
food
area
Significantly,
study
regulatory
limits.
These
results
underscore
importance
continued
monitoring
development
intervention
measures
to
ensure
quality
meets
established
protects
local
population.
Journal of Chemistry,
Journal Year:
2019,
Volume and Issue:
2019, P. 1 - 14
Published: March 5, 2019
Heavy
metals
are
well-known
environmental
pollutants
due
to
their
toxicity,
persistence
in
the
environment,
and
bioaccumulative
nature.
Their
natural
sources
include
weathering
of
metal-bearing
rocks
volcanic
eruptions,
while
anthropogenic
mining
various
industrial
agricultural
activities.
Mining
processing
for
extraction
mineral
resources
subsequent
applications
industrial,
agricultural,
economic
development
has
led
an
increase
mobilization
these
elements
environment
disturbance
biogeochemical
cycles.
Contamination
aquatic
terrestrial
ecosystems
with
toxic
heavy
is
problem
public
health
concern.
Being
persistent
pollutants,
accumulate
consequently
contaminate
food
chains.
Accumulation
potentially
biota
causes
a
potential
threat
consumers
including
humans.
This
article
comprehensively
reviews
different
aspects
as
hazardous
materials
special
focus
on
persistence,
toxicity
living
organisms,
potential.
The
bioaccumulation
its
implications
human
discussed
coverage
fish,
rice,
tobacco.
will
serve
valuable
educational
resource
both
undergraduate
graduate
students
researchers
sciences.
Environmentally
relevant
most
metalloids
Cr,
Ni,
Cu,
Zn,
Cd,
Pb,
Hg,
As.
trophic
transfer
chains/webs
important
wildlife
health.
It
very
assess
monitor
concentrations
segments
resident
biota.
A
comprehensive
study
chemistry
ecotoxicology
shows
that
steps
should
be
taken
minimize
impact
environment.
Human and Ecological Risk Assessment An International Journal,
Journal Year:
2018,
Volume and Issue:
25(6), P. 1353 - 1376
Published: May 23, 2018
Heavy
metals
are
transferred
from
the
abiotic
environment
to
living
organisms,
accumulated
in
biota
at
different
trophic
levels,
and
thus
contaminate
food
chains/webs.
Trophic
transfer,
bioaccumulation,
biomagnification
of
hazardous
heavy
chains
have
important
implications
on
wildlife
human
health.
This
review
article
deals
with
aspects
four
most
metalloids,
that
is,
Cd,
Pb,
Hg,
As.
Different
terms
concepts
used
relation
transfer
metals,
such
as
biotransference,
bioconcentration,
dietary
accumulation,
biomagnification,
biodilution,
trophodynamics,
been
discussed.
Equations
for
quantification
calculation
metal
factors
(MTFs)
given.
The
controversial
question
non-essential
has
addressed
discussed
examples
available
studies.
Criteria
definition
Soil-to-plant
is
briefly
while
bioaccumulation
these
elements
animal
groups
invertebrates,
fish,
amphibians
reptiles,
birds,
mammals
some
examples.
last
section
discusses
harmful
effects
Toxicological & Environmental Chemistry Reviews,
Journal Year:
2017,
Volume and Issue:
100(1), P. 6 - 19
Published: Dec. 7, 2017
The
term
‘heavy
metals’
is
commonly
used
in
the
environmental
literature
to
refer
metals
and
metalloids
associated
with
pollution,
toxicity
adverse
effects
on
biota.
has
been
diversely
defined,
mostly
terms
of
density,
relative
atomic
mass
number.
This
diversity
definitions
raised
questions
about
nomenclature
these
elements.
inclusion
metalloid
As
nonmetal
Se
heavy
also
an
important
issue.
Some
people
have
called
as
meaningless,
imprecise
poorly
defined
suggested
abandoning
use
term.
itself
may
not
be
problematic
but
careless
inconsistent
terminology
led
a
confusion
meaning
continued
it
should
more
comprehensive
scientific
way.
Here,
definition
‘naturally
occurring
having
number
(Z)
greater
than
20
elemental
density
5
g
cm−3.’
A
screening
Periodic
Table
according
this
yields
51
elements
metals.’
are
excluded
from
metals.
Environmental Technology & Innovation,
Journal Year:
2021,
Volume and Issue:
25, P. 102114 - 102114
Published: Nov. 24, 2021
Arsenic
is
a
highly
toxic
metalloid
that
extensively
distributed
in
soils
and
water
bodies,
resulting
variety
of
toxicity
mechanisms
harmful
effects
on
humans
environmental
health.
This
paper
comprehensively
reviews
the
technological
development
arsenic
(As)
removal
from
wastewater
contaminated
soil,
provides
insights
into
challenges
effective
compartments.
The
efficiency
available
technologies
also
discussed
terms
their
principle
operation,
efficiency,
advantages,
shortcomings.
Many
existing
are
not
found
economically
feasible
for
regions
interest
or
applicable
at
community
level.
Some
techniques
often
responsible
producing
by-products.
Overall,
adsorption
technique
demonstrated
high
almost
100%
maximum
95%
removing
respectively.
Novel
methods
such
as
application
nanotechnology
polymeric
ligand
exchangers
have
been
gaining
traction
but
seem
to
possess
limitations
similar
conventional
non-conventional
techniques.
