Surface study of HF- and HF/H/sub 2/SO/sub 4/-treated feldspar using auger electron spectroscopy

Journal Article · Sat Jan 01 04:00:00 EST 1983 · Geochim. Cosmochim. Acta; (United States)

DOI:https://doi.org/10.1016/0016-7037(83)90068-6· OSTI ID:6813705

Perry, D L; White, A F; Tsao, L; Gaugler, K A

Auger electron spectroscopy has been used to study K-feldspar that has been reacted with both aqueous 10% HF and a 50% mixture of a 10% HF/0.1 N H/sub 2/SO/sub 4/ solution. In the feldspar/HF system, the resulting feldspar surface was shown to have been fluorinated; depth profiling, using argon ion sputtering showed the fluorination to have occurred substantially into the mineral bulk. In the feldspar/HF/H/sub 2/SO/sub 4/ system, the resulting surface contained both fluorine and sulfur. The fluorination had again penetrated into the bulk, but the sulfur could be removed with mild argon ion sputtering. The Al/F signal ratio was much lower on the feldspar surface treated with the 10% HF/0.1 N H/sub 2/SO/sub 4/ solution than the feldspar surface treated with the weaker 10% HF acid solution.

• OSTI ID: 6813705
• Journal Information: Geochim. Cosmochim. Acta; (United States), Journal Name: Geochim. Cosmochim. Acta; (United States) Vol. 47; ISSN GCACA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
AUGER ELECTRON SPECTROSCOPY
CHEMICAL REACTIONS
DEPTH
DIMENSIONS
ELECTRON SPECTROSCOPY
ETCHING
FELDSPARS
FLUORINATION
HALOGENATION
HYDROFLUORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MINERALS
SPECTROSCOPY
SULFURIC ACID
SURFACE FINISHING
SURFACE PROPERTIES