Making gold green: New non-toxic method for mining gold
Making gold green: New non-toxic method for mining gold - Scientists have struck gold in the laboratory. They have discovered an inexpensive and environmentally benign method that uses simple cornstarch -- instead of cyanide -- to isolate gold from raw materials in a selective manner. This green method extracts gold from crude sources and leaves behind other metals that are often found mixed together with the crude gold.(10.1038/ncomms2891)
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