Hydrothermal diamond anvil cell for XAFS studies of first-row transition elements in aqueous solutions up to supercritical conditions

Bassett, W. A.; Anderson, A. J.; Mayanovic, R. A.; Chou, I. -M.

Abstract:

A hydrothermal diamond anvil cell (HDAC) has been modified by drilling holes with a laser to within 150 ??m of the anvil face to minimize the loss of X-rays due to absorption and scatter by diamond. This modification enables acquisition of K-edge X-ray absorption fine structure (XAFS) spectra from first-row transition metal ions in aqueous solutions at temperatures ranging from 25??C to 660??C and pressures up to 800 MPa. These pressure-temperature (P-T) conditions are more than sufficient for carrying out experimental measurements that can provide data valuable in the interpretation of fluid inclusions in minerals found in ore-forming hydrothermal systems as well as other important lithospheric processes involving water. (C) 2000 Elsevier Science B.V. All rights reserved.

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Conference Paper

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70022650

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Bassett, W. A.; Anderson, A. J.; Mayanovic, R. A.; Chou, I. -M.

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1-2

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English

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Chemical Geology

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Hydrothermal diamond anvil cell for XAFS studies of first-row transition elements in aqueous solutions up to supercritical conditions; 2000; Conference Paper; Chemical Geology; Bassett, W. A.; Anderson, A. J.; Mayanovic, R. A.; Chou, I. -M.