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

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.

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)

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.

is a chemical element with symbol Tl and atomic

number 81. This soft gray poor metal is not found

free in nature.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

is a transuranic radioactive chemical

element that has the

symbol Am and atomic number 95.

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.

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.

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.

some of the elements of the periodic

table are not harmful. People around

can make them harmful by misusing it

and abusing them.