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Planer-Friedrich, Britta ; Armienta, Maria A. ; Merkel, Broder J.:
Origin of arsenic in the groundwater of the Rioverde basin, Mexico.
In: Environmental Geology.
Bd. 40
(2001)
Heft 10
.
- S. 1290-1298.
ISSN 1432-0495
DOI: https://doi.org/10.1007/s002540100315
Abstract
Groundwater in the semiarid Rioverde basin in the nothern part of Mexico was investigated with respect to major and minor elements including arsenic as well as As(III) and As(V). The total arsenic concentrations varied from less than 5 to 50 mg/L. The in situ arsenic determination method produced reliable results with deviations from -5.6 to 2.2 mg/L compared to laboratory HGAAS. Since arsenic and barium were found to be inversely correlated precipitation of bariumarsenate was suspected to control arsenic solubility. Thermodynamically modeling by means of PHREEQC proved that BaHAsSO4×H2O (not BaAsSO4) might be a limiting phase, however only at higher concentrations than those determined in this study. Increased arsenic groundwater concentrations were found with lacustrine and decreased concentrations with fluvial Quarternary sediments. Increased total arsenic concentrations correlate with increased As(III) concentrations in the groundwater of the lacustrine sediments.
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| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Zusätzliche Informationen: | BAYCEER80700 |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Professur Umweltgeochemie Fakultäten Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik |
| Eingestellt am: | 22 Okt 2015 07:29 |
| Letzte Änderung: | 22 Okt 2015 07:29 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/20655 |