Dissolution of arsenic from waterlogged and aerated soil

Journal Article · Sat Jan 01 04:00:00 EST 1977 · Soil Sci. Soc. Am. J.; (United States)

DOI:https://doi.org/10.2136/sssaj1977.03615995004100050009x· OSTI ID:5168537

Hess, R E ^[1]; Blanchar, R W

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1. Univ. of California, Riverside

Sharpsburg and Menfro soils containing 320 and 160 ..mu..g As/g, respectively, were waterlogged with water or 1 percent dextrose. The Eh reached a minimum of -150 mV after 1 day of incubation and increased to about +300 mV after 12 days for both soils in 1 percent dextrose. The Eh remained constant in the Sharpsburg soil during incubation with water, but gradually decreased in the Menfro soil. In the 1 percent dextrose solution, As increased rapidly in both soils and became constant after 12 days. The As in solution increased more slowly when incubated with water, but also remained constant after 12 days. After freeze-drying and exposing the soil to the atmosphere, Eh increased and As decreased to initial levels. The values of pAl + 3pOH, pAl + pAsO/sub 4/, pFe + 3 pOH, pFe + pAsO/sub 4/, 3pMn + 2 pAsO/sub 4/, 3pCa + 2pAsO/sub 4/, and 3pPb + 2pAsO/sub 4/ were computed. These measurements indicated that the soil solution of the Menfro and Sharpsburg soils contained less As than predicted for Al, Fe, and Ca arsenates, and more As than predicted for Mn and Pb arsenates.

• OSTI ID: 5168537
• Journal Information: Soil Sci. Soc. Am. J.; (United States), Journal Name: Soil Sci. Soc. Am. J.; (United States) Vol. 41:5; ISSN SSSJD
• Country of Publication: United States
• Language: English

Related Subjects

510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ARSENATES
ARSENIC
ARSENIC COMPOUNDS
CALCIUM COMPOUNDS
CHEMISTRY
DISSOLUTION
ELEMENTS
IRON COMPOUNDS
LEAD COMPOUNDS
OXYGEN COMPOUNDS
SEMIMETALS
SOIL CHEMISTRY
SOILS
SOLUBILITY
TRANSITION ELEMENT COMPOUNDS