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- Title
Speciation of As(III) and As(V) in some Ghanaian Gold Tailings by a Simple Distillation Method.
- Authors
Ahmad, Khalid; Carboo, Derick
- Abstract
As(III) and As(V) in goldtailings and river-bed sediments from Obuasi were determined by distillation of arsenic as AsCl3. Results yielded 3750±426 mg kg-1 (45.2%) for As(V) and 3050±66 mg kg-1 (36.7%) for As(III) in the tailings. In the river-bed sediments, one spot yielded: As(III) 0 mg kg-1 (0%) and As(V) 1447±51 mg kg-1 (100%), whilst a second spot yielded: As(III) 0 mg kg-1 (0%) and As(V) 2976±51 mg kg-1 (100%). Using arsenic oxide standards, the recovery of As(III) and As(V) in the trioxide were 94.8 and 0.6% respectively. In a mixture of the two oxides, the recovery of As(III) was 87.6% with practically no interference from As(V). Total As content of the tailings was determined by neutron activation analysis (NAA) to be 8305±75 mg kg-1.
- Subjects
GHANA; SPECIES; METAL tailings; SOIL composition; ARSENIC; RIVERS; SEDIMENTS; DISTILLATION; OXIDES
- Publication
Water, Air & Soil Pollution, 2000, Vol 122, Issue 3-4, p317
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1023/A:1005286832435