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Volatile metals and metalloids in hydrothermal gases

Title data

Planer-Friedrich, Britta ; Merkel, Broder J.:
Volatile metals and metalloids in hydrothermal gases.
In: Environmental Science & Technology. Vol. 40 (2006) Issue 10 . - pp. 3181-3187.
ISSN 0013-936X
DOI: https://doi.org/10.1021/es051476r

Abstract in another language

Volatile metals and metalloids were sampled from hot springs, fumaroles, and a hydrothermally influenced wetlandin Yellowstone National Park. The sampling was based on diffusion through gas sampling chambers. Collectedgases were stabilized by dissolution and oxidation in 1:100 diluted NaOCl. Special procedures were developed toanalyze the oxidized samples by GF-AAS and HG-AAS. For ICP-MS, samples had to be blank-corrected for polyatomic isotope interferences, especially by 23Na35Cl+ and23Na37-Cl+ on 58Ni and 60Ni and by 40Ar23Na+ on 63Cu. From the concentrations trapped in solution, net diffusion rates were calculated by Fick’s first law. The highest concentrations reached a maximum of 8 g/m3 for volatile silicon. Volatile nickel, tungsten, zinc, copper, and molybdenum, previously only known from anthropogenic sources, occurred naturally in the hydrothermal gases in ranges of tens to hundreds of íg/m3. Replicate measurements indicated significant temporal variations in concentrations, probably the result of complex changes in the hydrothermal regime as well as varying microbial activity. Global correlations between gaseous and superficial aqueous phases were missing.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER80715
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professorship Environmental Geochemistry Group
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professorship Environmental Geochemistry Group > Professorship Environmental Geochemistry - Univ.-Prof. Dr. Britta Planer-Friedrich
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 08 May 2015 06:18
Last Modified: 08 May 2015 06:18
URI: https://eref.uni-bayreuth.de/id/eprint/13144