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Nanomaterials

Nanomaterials

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NANOMATERIALS

ENVIRONMENTAL HEALTH AND SAFETY IMPACTS

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1) Natural nanomaterials

-A nanomaterial made by nature through biochemical or mechanical

processes, without direct or indirect connection to human activity or

anthropogenic process. Volcanic ash, Ocean spray, fine sand, and dust

biological (viruses) these are the example of natural nanomaterials.

-The use of volcanic ash can be depending on its physical properties like size of

the particles, friability, and light colour as it is used for coating and layering of

bituminous matt roads (high cot roads).

-The natural sand and dust can be used as cost-effective filling and packing

materials around the water tank and driveways to improve the concrete

shrinkage. The inhaled nanoparticles by human body or any animal, may cross

cell membrane and reaches to blood stream and affect the liver, heart, and

blood cells.

2) Engineered Nanomaterials

-Carbon buckyballs, carbon nanotubes, metal or metal oxide and quantum dots

are the example of engineered nanomaterials. These nanomaterials are used

for scratchproof eyeglasses, crack resistant paints, transparent sunscreens, self

-cleaning windows and ceramic coating for solar cells.

-A new study shows that carbon buckyballs molecules are easily absorbed in

the animal cells and get toxic to the human body. These buckyballs have been

shown to cause brain damage in fish and inhaling these materials may cause

lung damage as like that caused by asbestos.

3) Organic Nanomaterials

-Organic nanomaterials are the materials of two or more dimensions, with a

size in range of 1-100 nm. They are composed of carbon-based nanomaterials

such as fullerenes, carbon nanotubes, single walled carbon tubes, multi-wall

carbon tubes, Graphite’s, and nanofibers.

-These nanomaterials are templated upon natural or synthetic organic

molecules. Nature provides a wide range of particles which includes protein

aggregates, milk emulsions or more complex organized structures such as

viruses.

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NANOMATERIALS ENVIRONMENTAL HEALTH AND SAFETY IMPACTS 1) Natural nanomaterials -A nanomaterial made by nature through biochemical or mechanical processes, without direct or indirect connection to human activity or anthropogenic process. Volcanic ash, Ocean spray, fine sand, and dust biological (viruses) these are the example of natural nanomaterials. -The use of volcanic ash can be depending on its physical properties like size of the particles, friability, and light colour as it is used for coating and layering of bituminous matt roads (high cot roads). -The natural sand and dust can be used as cost-effective filling and packing materials around the water tank and driveways to improve the concrete shrinkage. The inhaled nanoparticles by human body or any animal, may cross cell membrane and reaches to blood stream and affect the liver, heart, and blood cells. 2) Engineered Nanomaterial ...
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