Table 2-13: Nitric Acid

Volatile Oxides	Not Chemically Attacked	Form Oxide Coating (Passivated)	Form insoluble acids or hydrated oxides
Os (OsO4) (M1-5)	Al (M6)	Al (M1-3, 7, 8)	As (M4)
Re (Re2O7) (M1-4)	Au (M1-3, 6-9)	B (M8)	Mo (M1, 3)
Ru (RuO4) (M1-3)	Cr (M5, 6)	Ca (M8)	P (M4)
	Hf (M1, 3)	Cr (M1-3, 7, 8)	Sb (M1, 3-5, 7-11) (Sb2O3 & Sb2O5) (M5)
	Ir (M1, 3, 6, 8, 9)	Fe (M5, 8)	Sn (M1, 3, 4, 7-11)
	Nb (M1, 3)	Ga (M1, 3, 8)	W (M1, 3, 10)
	Os (M1-3, 6, 8)	Hf (M8)
	Pd (M2,6,8)	In (M1,3,8)
	Pt (M1-3,6,8,9)	Mg (M8)
	Rh (M1-3, 6, 8,9)	Nb (M2,8)
	Ru (M2,6,8)	Ta (M2,8)
	Ta (M1,3)	Th (M1,3)
	W (M5)	Ti (M7,8)
	Zr (M1,3)	Zr (M8)

References:

M1	Bogen, D. C. In Treatise on Analytical Chemistry; Kolthoff, I. M., Elving, P. J., Eds.; Interscience: New York, 1982; Vol. 5: Part I, pp 1-22.
M2	Anderson, R. Sample Pretreatment and Separation; John Wiley & Sons: New York, 1987.
M3	Willard, H. H.; Rulfs, C. L. In Treatise on Analytical Chemistry; Kolthoff, I. M., Elving, P. J., Eds.; Interscience: New York, 1961; Vol. 2: Part I, pp 1027-1050.
M4	Lundell, G. E. F.; Hoffman, J. I. Outlines of Methods of Chemical Analysis, 6th ed.; John Wiley & Sons: New York, 1951.
M5	Scott, W. W. Scott's Standard Methods of Chemical Analysis, 5th ed.; D. Van Nostrand Company, Inc.: New York, 1939.
M6	Treadwell, F. P.; Hall, W. T. Analytical Chemistry, 9th English ed.; John Wiley & Sons: New York, 1937.
M7	Bajo, S. In Preconcentration Techniques for Trace Elements; Alfassi, Z. B., Wai, C. M., Eds.; CRC Press: Boca Raton, 1992, pp 3-31.
M8	Bock, R. A Handbook of Decomposition Methods in Analytical Chemistry, 1st ed.; John Wiley and Sons: New York, 1979.
M9	Sulcek, Z.; Povondra, P. Methods of Decomposition in Inorganic Analysis; CRC Press: Boca Raton, 1989.
M10	Zehr, B. D. American Laboratory 1992, December, 24-29.
M11	Sulcek, Z.; Povondra, P.; Dolezal, J. CRC Critical Reviews in Analytical Chemistry 1977, 255-323.

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