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Origin of arsenic in the groundwater of the Rioverde basin, Mexico

Title data

Planer-Friedrich, Britta ; Armienta, Maria A. ; Merkel, Broder J.:
Origin of arsenic in the groundwater of the Rioverde basin, Mexico.
In: Environmental Geology. Vol. 40 (2001) Issue 10 . - pp. 1290-1298.
ISSN 1432-0495
DOI: https://doi.org/10.1007/s002540100315

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER80700
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professorship Environmental Geochemistry Group
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: 22 Oct 2015 07:29
Last Modified: 22 Oct 2015 07:29
URI: https://eref.uni-bayreuth.de/id/eprint/20655