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Copper Analysis

1999

I am wondering if any of you can give me information on a method for determining copper in our nitric acid based deoxidizer. The range I'm looking at is in the ppm usually between 50 and 500. Our deox. also contains ferric sulphate, a small amount of fluoride, a lot of zinc; I'm not sure if these are an analytical problem or not. I would like to find some type of wet-test that can give me a fairly accurate result while, hopefully, avoiding the use of highly toxic reagents. I'm fairly new to the field, therefore I don't have a vast pool of knowledge nor the means to obtain a lot of expensive gadgets. Titration would be my preferred method. Anything you can share will be of use.

Thanks for your time,
James

James A. Corier

James,

In your case, I believe AA analysis is the most reliable and accurate method for determine the copper content in the ppm range.

Ling

Ling Hao
- Grand Rapids, Michigan
1999

Hi James,

I tend to agree with Ling on this. AA analysis would be your most reliable method of CU detection. If you don't have access to an Atomic Absorption Unit [on eBay or Amazon], perhaps you could send your samples to an outside Lab. Chemet Kits and the like are just not that accurate.

Kitt

Kitt Daly
- Austin, Texas
1999

Hello,

I am trying to determine copper dissolved in transformer oil. I would like if you can recommend a method. I think atom absorption would be suitable, but I am not sure about analysing oil in the aapparatus. May be I should use a solvent. In that case which one? Must I extrat before analysing or it is OK to inject oil/solven in the atom absorptoins apparatus.

Thanks for your time

El Sayed Badawi
- Stockholm, Sweden
2001