I am trying to analyze the amount of gold in the copper anode slime. Since it has other elements such as Pb, Cu, Se, and Ag in it, what would be the best reagent to dissolve them for ICP? And is there any standards for ICP digestion of Gold?
There are no "standards" as such for dissolution of metals and slags etc, but there may be commonly used methods.
This answer from a recent Plasmachem-L discussion might be of use to you:
">However there are a couple of textbooks/references I would recommend, that were invaluable to my education in wet chemistry and instrumental techniques used in the field of steel making and beyond. > The first is Vogel's /"Textbook of Quantitative Chemical Analysis"/, which was first published in 1939, but there have been 6 further editions, the last being in 2000. I would highly recommend this book without hesitation to anyone who wanted a better understanding of the fundamental of analytical chemistry.You'll find a link to the book below if interested in purchasing it (you might even find an older version online). > > https://www.amazon.com/Vogels-Quantitative-Chemical-Analysis-6th/dp/0582226287 > > The 2nd book is /"Progress of Analytical Chemistry in the Iron and Steel Industry"/ published by the publication office of the European Union, which I learned about when I was working for PerkinElmer as an Application Scientist. This book was compiled in 1992, so was not available until after I left the steel industry, but I found it very useful when developing methods for our AA, ICP-OES and ICP-MS instrumentation. I think it is a reference book which you would find very useful as it contains a multitude of analytical procedures used in the quality control of iron and steel. I particularly liked the fact that it includes methods using modern instrumental techniques and also detailed information about how to approach the sample preparation and analysis of the many varied types of samples encountered in this industry such as slags, ores and refractory materials. If interested, I found an online pdf version of the book, which you can download below: > > https://op.europa.eu/en/publication-detail/-/publication/251e2b25-7f45-4342-ad8f-5f0a091019f1
>"
I expect you will be using some combination of Nitric acid, Hydrochloric acid, maybe Perchloric acid, (note this requires somewhat more elaborate safety precautions) and possibly even Hydrofluoric acid, **NOTE this last acid (HF) requires extremely careful handling and extra safety precautions, DO NOT use this chemical unless you have read the safety precautions, have calcium gluconate first aid on standby and know which hospital you are heading to if you get burns.
Allan Philippe
: Thank you! The approach used in your paper on reverse aqua regia is efficient in dissolving gold.For clarification on standards, I am looking for either ISO or European or German ones that mention how to digest the anode slime for ICP-MS analysis and the reagents for digestion.
Matthew Wheal: Thank you for sharing your research experience. The books are helpful.
We were looking for any standards on gold dissolution and subsequent ICP-MS analysis, either from ISO or European, or German. Would there be any luck finding these standards?
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