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14.10 Ashing

Ashing Techniques: Avoiding common problems

• For difficult to dissolve oxides use as low an ashing temperature as possible (400 to 550 ̍C maximum) for samples to be analyzed for Ti, Zr, Nb, Hf, Ta, W, Ni, Co, Fe, Cr, Sb, and Mo. Pt̍ is not aMacked by HF which will dissolve several of the above oxides. • Loss due to reducPon to the metal can occur. Look for easily reduced elements such as Cu and the precious metals. Use the appropriate crucible material to allow for the necessary dissoluPon reagents for the metal. Pt crucibles should not be used.

14.11 Ashing

Ashing Techniques: Techniques -examples of

❏ See h4p://inorganicventures.com/tech/reliability/part14.asp for examples of ashing techniques