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Hafnium has no known biological function. The ferric ion binding protein
(nFbp) from Neisseria gonorrhoeae can bind clusters of
Hf4+ in solution (Alexeev et al, 2003). Hafnium can be leached from zircon through the
activity of Thiobacillus ferrooxidans (Becker et al, 1986).
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Medline for hafnium AND bacteria
Becker S, Bullmann M, Dietze HJ, and Iske U. Mass spectographic determination of
selected chemical elements by microbial leaching of zircon. Fresenius Z Anal Chem.
1986;324:37-42.
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