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Phosphate

physical science Maturity 7-9 Next article →

Phosphate is a very important part of our world. It is a group of atoms that comes from phosphoric acid.

PiSpeciation
PiSpeciation

Scientists call it an anion or a salt. It is mostly known as orthophosphate. This happens when three protons are removed from phosphoric acid. If you only remove one proton, you get dihydrogen phosphate. If you remove two, you get hydrogen phosphate. These different forms are very important for many things in nature.

Annual mean sea surface phosphate (World Ocean Atlas 2009)
Annual mean sea surface phosphate (World Ocean Atlas 2009)

In living things, phosphate works in many amazing ways. It helps cells manage their energy through a process called metabolism. This happens when phosphate groups are added or removed. These steps are called phosphorylation and dephosphorylation. You can find organic phosphates in things like DNA and RNA. They are also found in molecules like ATP and ADP. These are often called high-energy phosphates. They act like tiny batteries that power your body.

PhosphatetoNitrate
PhosphatetoNitrate

Phosphate also helps build your body. It is a main part of your bones and teeth. These hard parts are made of a crystal called hydroxyapatite. Mammal teeth sometimes have fluoroapatite instead. This is a version where fluoride ions take the place of some parts. In medicine, doctors use phosphate salts to help people. They can help with urinary tract infections or kidney issues. Some people even take them as dietary supplements if they need more phosphorus.

Phosphate Mine Panorama
Phosphate Mine Panorama

People mine phosphate from the earth to help farms grow food. This is done by digging up phosphate rock. China is the largest producer and exporter of these phosphates. Morocco has the largest known reserves in the world. In North America, you can find big deposits in Florida, Idaho, and North Carolina. There are also mines in places like Egypt, Tunisia, and Jordan. Some places, like Nauru, have been mined very heavily in the past.

Train loaded with phosphate rock, Metlaoui Tunisia-4298B
Train loaded with phosphate rock, Metlaoui Tunisia-4298B

We must be careful with how we use these resources. In 2012, the USGS estimated there were 71 billion tons of reserves left. Some scientists worry we might run out in 50 to 100 years. Mining can also be hard on the environment. It can leave behind heavy metals like lead or uranium. These metals can wash into the water if they are not managed well. We must find ways to use phosphate safely for the future.

International Exchange of Phosphates in 1937 - DPLA - 03790fc57d3206e73683a68ec11c8fb2
International Exchange of Phosphates in 1937 - DPLA - 03790fc57d3206e73683a68ec11c8fb2
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🖼️ Images & Media (6)
File:PiSpeciation.svg
PiSpeciation.svg
File:Phosphate Mine Panorama.jpg
Phosphate Mine Panorama.jpg
File:Train loaded with phosphate rock, Metlaoui Tunisia-4298B.jpg
Train loaded with phosphate rock,...
File:International Exchange of Phosphates in 1937 - DPLA - 03790fc57d3206e73683a68ec11c8fb2.jpg
International Exchange of Phosphates in...
File:Annual mean sea surface phosphate (World Ocean Atlas 2009).png
Annual mean sea surface phosphate (World...
File:PhosphatetoNitrate.png
PhosphatetoNitrate.png
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