The CRT T.V

Created by Jeremy A.

What Elements Create The Device?

The elements used within the CRT T.V are: Lead (Pb), Sulphur (S), Zinc (Zn), Copper (Cu), Cadmium (Cd), Barium (Ba), Strontium (Sr) and Oxygen (O).

Lead (Pb)

Lead (Pb) was used with Oxygen (O) to create Lead oxide (PbO). This was used in the CRT T.V for two main reasons:

-To improve the optical quality of the glass

-To act as a shield to block radiation given off from the electron gun and electron beam

There was at least 4-8 pounds of lead within the screen of the CRT. Once the glass of the CRT broke, lead and other hazardous materials are released, posing a threat to humans and their health.
Lead (Pb) from the CRT could have been mined from Australia, Canada, USA or China. These are the leading producers of Lead (Pb) and are likely the areas of where lead from the CRT is mined from.

Sulphur (S)

Sulphur was combined with Zinc (Zn) and Cadmium (Cd) to be used to emit lights. The electron beam would hit the phosphors with radiation. Combined with activators, the phosphors then gave off lights they were designed to (red, green and blue).

Red lights were created using silver activator/ copper activator with Zinc sulphide (ZnS) mixed with a larger amount of Cadmium sulphide (CdS).
Green lights were emitted using copper activator with Zinc sulphide (ZnS).
Blue lights were shown when Zinc sulphide (ZnS) was mixed with silver activator
Sulphur (S) is normally found near volcanic areas, the main locations that collect Sulphur (S) would then be: Japan, Indonesia and Chile. Any of these places are where the Sulphur (S) came from.

Zinc (Zn)

Zinc (Zn) was combined with Sulphur (S) to create Zinc sulphide (ZnS). This was used to create a blue light on the screen of the CRT.
Over 50 countries in the world mine Zinc (Zn) themselves. In Canada, we would likely use our own Zinc (Zn) to create CRTs.

Copper (Cu)

Copper (Cu) was occasionally used to emit red lights for the CRT but, was mainly used for wiring for the device.
Copper (Cu) is normally mined in: Arizona, Michigan, New Mexico, Montana, Utah, Chile and Peru.

Cadmium (Cd)

Cadmium (Cd) was mixed with Sulphur (S) to create Cadmium sulphide (CdS). This was used to help create red lights on the CRT T.V.
The compound Cadmium sulphide (CdS) became a health hazard if the screen broke and released the dust into the air. This is because the compound Cadmium sulphide (CdS) is toxic, which will likely creating health problems for those that inhale it.
Cadmium is normally found in: China, Japan, Korea, Mexico, the United States, the Netherlands, India, the United Kingdom, Peru and Germany.

Barium (Ba)

Barium (Ba) was mixed with Oxygen (O) to create Barium oxide (BaO). This was also used to block radiation from the electron gun and beam. This chemical compound is harmful to human skin.
Barium is normally mined in: China, India, Morocco, U.S, Nevada and Georgia.

Strontium (Sr)

Strontium (Sr) was combined with Oxygen to create Strontium oxide (SrO). This, in addition to Barium oxide and Lead oxide, was used to block radiation given off from the CRT.
Strontium is located all across the earth, allowing Canada to mine their own Strontium for use in the CRT.

Oxygen (O)

Oxygen (O) was used with Barium (Ba), Strontium (Sr) and Lead (Pb) to help block radiation that was used in the CRT from the electron gun and beam.
Canada can use its own Oxygen (O) for the CRT.

Selected Element: Copper (Cu)

Copper (Cu) is used within the CRT as wire(s) because it is a conductor of electricity, malleable, and ductile, making it ideal for wiring. This is preferred over Gold (Au) because Copper (Cu) is cheaper.

Bohr Diagram

Lewis Dot Diagram

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Copper (Cu) reacts with Chlorine (Cl), Fluorine (F) and Bromine (Br).

-With Chlorine (Cl) and Copper (Cu) combined, it creates CuCl2.

-With Fluorine (F) and Copper (Cu) combined, it creates CuF2.

-With Bromine (Br) and Copper (Cu) combined, it creates CuBr2.

These are Ionic Compounds because Copper (Cu) is a metal (Transition metal) put together with a non-metal, therefore creating Ionic compounds by trading electrons and keeping the shells separate, instead of overlapping the shells and sharing electrons.

Recycability of the CRT T.V

The CRT is very hard to recycle due to the chemicals used to create it. The use of toxic chemicals makes it difficult to recycle since: The CRT is hard to take apart, and, the chemicals are hard to remove from the materials itself. Many programs offer to recycle them, however, they require a fee because of the excessive amount of work done to properly remove the toxic compounds. The CRT T.V is too hard to cleanse and take apart to be considered recyclable in this case.
Once the CRTs use is over, people consider multiple ways to get rid of it. One, people may just throw away the CRT and allow the harmful chemicals to remain in the air once they are brought into a landfill. Two, others many take part in the recycling process and pay a company to cleanse the device of the toxic compounds. Three, some may try to sell the CRT to another person which, will end up dumping the device later. Four, people may break open the CRT (hopefully keeping the toxic chemicals in mind) and scavenge parts like copper wires to sell then, dump the remaining parts properly (or improperly).