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- Posts: 20
- Joined: Fri Jun 09, 2017 3:55 pm
I have a Varian Spectra 55B and i've been analyzing cadmium in water samples, most of the samples are negative for cadmium but there are a few that give me false positive, i'd sent the samples to another laboratory and analyze with ICP and the samples are negative. I was thinking that the problem is in the flame but im not sure...i'd tried the interferences that says in EPA method, tried with KCl solution, filtration,reduce the width of opening window...but all went wrong...what can i do?