Analysis of precious metals in geological samples
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This post was last edited by zjp on 2012-9-19 at 14:39. Dear friends from Haichuan, I have several geological samples that need to be analyzed for the contents of AU and Pt, with levels below 5 g/t. Do you have any good enrichment methods (other than pyrometallurgical techniques)? I only have AAS and ICP available.
This post was last edited by qugd on 2012-8-14 at 10:01. At first glance, I thought that samples collected from different locations might have varying levels of precious metals, which caught my attention; by looking at the results of the analysis, it’s possible to determine which location has higher concentrations of precious metals. For samples at the ppm level, it should be easy to find suitable analysis methods: there are certainly many colorimetric techniques available. AAS and ICP/AES are also viable options; when using AAS, element lamps for gold and platinum are required.
Hehe, g/t is probably not on the ppm scale; it’s in the ppb-ppt range
1g/t = 1mg/kg = 0.001g/1000g = 1 ppm, isn’t that correct? Then please calculate it in ppb or ppt and explain it. If it is a precious metal deposit with concentrations in the order of ppb or ppt, it is not worth mining.
Hehe, I really miscalculated:P; it doesn’t get enriched, and it’s also difficult to handle using AAS, right?