Substoichiometric determination of traces of gold by neutron-activation analysis |
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| Affiliation: | 1. State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;2. School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia30332, United States |
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| Abstract: | A highly selective, rapid, one-step radiochemical separation procedure for gold has been developed. It is based on the solvent extraction of gold diethyldithiocarbamate from a 0.01–10N sulphuric or hydrochloric acid medium using a substoichiometric amount of copper diethyldithiocarbamate in chloroform. The separation has been applied to the determination of traces of gold by neutron-activation analysis in high-purity lead, the rock W-1, gold-doped semi-conductor-grade silicon and a biological material (kale). Amounts of gold down to 2 × 10−10 g have been determined. |
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