elements that can harm the environment

2. Elements provides useful framework for
analyzing chemical behavior, and is widely used in
chemistry and other sciences. There are many
elements that can harm the environment and a
person’s health condition because of the toxic
substances that they contain. This presentation will
discuss about their harmful effects on the
environment and to a person’s health

4.  Vanadium causes the inhibition of certain
enzymes with animals, which has several
neurological effects.
 It also causes breathing disorders, paralyses
and negative effects on the liver and
kidneys.
 Vanadium can cause harm to the
reproductive system of male animals, and
that it accumulates in the female placenta.

5.  Carcinogenicity- Carbon black has been listed by
the International Agency for Research on Cancer
(IARC) within Group 3 (The agent is not classifiable
as to its carcinogenicity to humans)

6.  Chronic inhalation exposure to
carbon black may result in temporary
or permanent damage to lungs and
heart.
 Skin conditions such as inflammation
of the hair follicles, and oral mucosal
lesions have also been reported from
skin exposure.

7.  is a chemical element with symbol Tl and atomic
number 81. This soft gray poor metal is not found
free in nature.

8.  Can cause breathing problems
 The effects of Thallium are tiredness,
headaches, depressions, lack of
appetite, leg pains, hair loss and
disturbances of the sight.
 Negative effects upon plants, such as
color changes in leaves and growth
declines.

10.  Large releases of thorium may be
harmful to contaminated plants and
animals.
 Thorium may also be harmful when
released to aquatic places. It may
harm the species of the bodies of
water.

11.  Uranium was discovered in 1789 by Martin Klaproth,
a German chemist, in the mineral called
pitchblende. It was named after the planet Uranus,
which had been discovered eight years earlier.

12.  Uranium is harmful both through its chemical
toxicity and its radioactivity.
 This principle can be used in the product of
nuclear weapons which can be harmful when
used militarily. There are also industrial
byproducts released into the atmosphere that
might threaten our health.
 Uranium can break chemical bonds which are
essential to the structure and function of living
tissues of the organisms. And these breaks
cannot be usually repaired by our body. Which
can make the cells cancerous.

13.  Polonium was the first element Marie and
Pierre Curie discovered. Polonium is the
heaviest element in the chalcogen
family. It is in Group 16 (VIA) on the
periodic table.

14.  Polonium is harmful both through its
chemical toxicity and its radioactivity.
 Exposure to polonium increases the risk
of getting various cancers.
 When it breaks down, it gives off alpha
particles. These particles are tiny, atom-
sized particles that can destroy cells.

15.  Arsenic is an element in the environment
that can be found naturally in rocks and
soil, water, air, and in plants and animals.
It can also be released into the
environment from some agricultural and
industrial sources.

16.  It is still classified as a deadly poison. But amidst
all of that it is still an essential element for some
animals and even for human.
 It may also affect the community near smelters,
fields or orchards where arsenic pesticides
where used that may contaminate the soil.
 The arsenic from farming and smelting tends to
bind strongly to soil and is expected to remain
near the surface of the land for hundreds of
years as a long-term source of exposure.

17.  pure aluminium is a silvery-white metal with
many desirable characteristics. It is light,
nonmagnetic and nonsparking. It is somewhat
decorative. It is easily formed, machined, and
cast. Pure aluminium is soft and lacks strength,
but alloys with small amounts of copper,
magnesium, silicon, manganese, and other
elements have very useful properties.
Aluminium is an abundant element in the
earth's crust, but it is not found free in nature.
 Depending on the source of exposure,
aluminum can be absorbed through the
gastrointestinal (GI) tract or the lungs.

18.  The consequences for birds that
consume contaminated fish -eggshell
thinning and chicks with low birth-
weights
 The consequences for animals that
breathe in aluminum through air may be
lung problems, weight loss and a decline
in activity
 Aluminum can damage the roots of
trees when it is located in groundwater.

19.  is a transuranic radioactive chemical
element that has the
symbol Am and atomic number 95.

20.  Its isotopes decay very slowly in the
environment and as a result they can do
harm to plants and animals. When
animals are exposed to extreme levels of
americium, results may be damage to
organs such as the lungs, liver and
thyroid.

21.  Beryllium is a Group 2 (IIA) element. It is a metal
and has a high melting point. At ordinary
temperatures, beryllium resists oxidation in air.
Beryllium compounds are very toxic. Its ability
to scratch glass is probably due to the
formation of a thin layer of the oxide.
 Humans add beryllium through production of
metal and combustion of coal and oil.
 Industrial emissions will add beryllium to air and
wastewater disposals will
add beryllium to water.

22.  The uptake of beryllium has
consequences mainly for human health.
However, laboratory tests have
indicated that it is possible for beryllium
to cause cancer and changes of DNA
with animals. So far there is no field
evidence to support these findings.

23. some of the elements of the periodic
table are not harmful. People around
can make them harmful by misusing it
and abusing them.