Earthworms Absorb Copper Nanomaterials From Soil

A new study demonstrates that earthworms absorbed discarded copper nanoparticles that are present in soil. The University of Kentucky study was funded by U.S. Environmental Protection Agency.

(Earthworms could be miners)

One crucial step in determining the uptake of nanomaterials was discerning whether uptake of metal ions was released from the nanomaterials or the nanomaterials themselves. Using x-ray analysis, researchers were able to differentiate between copper ions and copper nanoparticles by examining the oxidation state of copper in the earthworm tissues.

Many products will release their nanomaterials either as a result of regular use or after disposal. These discarded nanoparticles could enter waterways and eventually soil. According to the authors, it is unclear how nanomaterials interact in the environment due to lack of scientific research; however, there is a possibility of unintentional ingestion by humans and animals.

Jason Unrine, the lead author of the study said, "This was one of the first studies to demonstrate that engineered nanomaterials can be taken up from the soil by soil organisms and enter food chains, and it has significant implications in terms of potential exposure to nanomaterials for both humans and ecological receptor species."

Maybe there's a way to turn this situation to our advantage. In Larry Niven's 1968 novel A Gift From Earth, he writes about specially developed mining worms:

A mining worm is five inches long and a quarter inch in diameter, mutated from an earthworm. Its grinding orifice is rimmed with little diamond teeth. It ingests metal ores for pleasure, but for food it has to be supplied with blocks of synthetic stuff which is different for each breed of worm - and there's a breed for every metal...

What breaks down the ores is a bacterium in the worm's stomach. Then the worm drops metal grains around it's food block, and we sweep them up.
(Read more about Niven's mining worms)

Update: We should get these earthworms working as soon as possible; take a look at the results of an in vivo study on copper nanoparticle absorbtion by mice (click here and scroll down). Thanks, duG!

End update.

Via Eurekalert.

Scroll down for more stories in the same category. (Story submitted 12/17/2010)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 6 )

Related News Stories - (" Biology ")

Svalbard Seed Vault (aka Doomsday Vault) Gets Upgrades
'But they existed in the Life Bank, as did virtually every plant and animal that existed on Old Earth.' - John Varley, 1977.

China Melts Tibetan Permafrost To Plant Forest
'Can you give us a microwave spotlight?' - Niven, Pournelle, Flynn, 1995.

Hackers Insert Malware Into DNA
'They tied the memory to the bloodline and that was their record!' -

Worms Eat Plastic Now
'Slowly and inexorably, the rate of dissolution increased...' - Davis/Pedlar, 1971.



Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.






Current News

Save Your Brain's Connectome, Upload Yourself Elsewhere
'You've got remote storage. How regular is the update?'

TMS Decreases Belief In God, Increases Belief In Immigrants
'... setting up the same currents, the same basic ideas, in them all.'

Loomo Mini Transporter Robot Companion You Ride On
'Slowly the [robot] horse raised its head, wiggled its ears, blinked twice, gave a tentative whinny.'

Soft Robotics - Now With 3D Printed Sensors!
'A series of chemelectric afferent nerve-analogues, which permitted it to gauge to an ounce the amount of pressure necessary to snap a bone...'

AI Tool Lynx Insight And The Cybernetic Newsroom
'The structure,... was once a great homeostatic newspaper, the New York Times. It printed itself directly below us...'

Espresso Telescope Searches For Exoplanets
'These instruments were the wonderful ones our astronomers had perfected.'

Dune Fans! Metal-Organic Frameworks Make Science Fiction Real
'Dew collectors,' he muttered, enchanted by the simple beauty of such a scheme.

Manned Maneuvering Unit From 1984
'The glittering little rocket bolted to the black iron behind him.'

Astronaut Gets Younger In Space
'So what we're looking for now is not an antibiotic - an anti-life drug - but an anti-agathic, an anti-death drug...'

Blockchain Used To Verify Election Results
'Any adult could punch into the phone his or her code, followed by a yes or no.'

IJOP Integrated Joint Operations Platform China's Minority Report?
'All day long the idiots babbled, imprisoned in their special high-backed chairs...'

HushMe Bluetooth Device Reinvents The Hush-A-Phone
'Talking into a hush-a-phone which he had plugged into the telephone jack...'

Ultrathin Brain Needle Developed At MIT
Putting drugs into a selected cubic millimeter within the living brain.

Tesla Semi Truck Now At Work
Why wait? Tesla Semi now hard at work.

Illustris: The Next Generation Of Universe Simulation
'This digital device was ... A machine able literally to contain the Universe Itself...'

Scaly Yet Soft Robotic Snake
Love those robotic sneks.

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise | - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.