Developing portable, highly sensitive gold detecti
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"This easy-to-use sensor will allow fast detection right at the drill rig with the amount of gold determined within an hour, at much lower cost."
The researchers have been able to detect less than 100 parts per billion of gold in water. They are now testing using samples of real rock with initial promising results. The work is funded by the Deep Exploration Technologies Cooperative Research Centre.
http://www.nanowerk.com/nanotechnology-news/newsid=39915.php