I would add to what the others have said, it depends on how dilute "dilute is." HF will gradually devitrify your nebulizer and quartz injector. Alumina/sapphire injectors are better for HF, pfa nebulizers are HF-resistant.
R. Steven Pappas, Ph.D.
Smoke Analysis Group
Centers for Disease Control & Prevention
4770 Buford Hwy, M.S. F-44
Atlanta, GA USA 30341-3717
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From: PLASMACHEM-L: Analytical Chem.(ICP's, DCP's, MIP's). [mailto:[log in to unmask]] On Behalf Of Hubble, Jane
Sent: Tuesday, September 06, 2011 3:48 AM
To: [log in to unmask]
Subject: Re: nanoparticles and HF questions
Does anyone happen to know whether titanium dioxide nanoparticles survive in an ICP plasma, or do they get broken down to titanium and oxygen? If I were to analyse a solution containing only titanium dioxide nanoparticles in acidified water (which looks like a clear solution to me,) would I need to digest it first to be able to determine the titanium content?
Also, I have a standard P-E Elan9000 ICP-MS with nickel cones and cross-flow nebuliser. Will it be OK to run samples in a dilute HF matrix through it, or do I need to obtain platinum cones or other HF-proof parts?
Laboratory Manager, School Of Applied Sciences
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