The Identification of Arsenic Chemical Form in Mine Waste Materials Using X-Ray Absorption Spectroscopy

Matanitobua, V. P., Noller, B. N., Chiswell, B., Ng, J. C. and Harris, H. H. (2007). The Identification of Arsenic Chemical Form in Mine Waste Materials Using X-Ray Absorption Spectroscopy. In: Contaminate Bioavailability, Dynamics a1b and Lifecycle Assessment. CRC CARE Contamination Cleanup 07, Adelaide, South Australia, (not found-not found). 24 - 28 June 2007.


Author Matanitobua, V. P.
Noller, B. N.
Chiswell, B.
Ng, J. C.
Harris, H. H.
Title of paper The Identification of Arsenic Chemical Form in Mine Waste Materials Using X-Ray Absorption Spectroscopy
Conference name CRC CARE Contamination Cleanup 07
Conference location Adelaide, South Australia
Conference dates 24 - 28 June 2007
Convener CRC Care and EcoForum Limited
Proceedings title Contaminate Bioavailability, Dynamics a1b and Lifecycle Assessment
Place of Publication Salisbury, S Australia
Publisher CRC for Contamination Assessment and Remediation of the Environment
Publication Year 2007
Year available 2007
Sub-type Fully published paper
Issue c7058
Start page not found
End page not found
Total pages not found
Collection year 2008
Language eng
Abstract/Summary Pre-treatment of samples using selective extraction techniques may alter the chemical form of the arsenic. X-ray absorption spectroscopy is capable of providing detailed chemical and structural information about a specific absorbing element in situ with minor or no pre-treatments. There are two regimes in X-ray Absorption Structure (XAS) Spectroscopy: X-ray Absorption Near-Edge Spectroscopy (XANES) and Extended X-ray Absorption Fine Structure (EXAFS) Spectroscopy. The absorption edge energy in XANES spectra is sensitive to the oxidation state of arsenic, and the position increases with an increase in oxidation state. XANES is applicable to solution or solid-phase samples and sensitive to parts per million. XANES gives chemical identity empirically by comparing sample spectra to known compounds.
Subjects 250409 Quality Assurance, Traceability and Metrological Chemistry
300804 Environmental Impact Assessment
771005 Integrated (ecosystem) assessment and management
EX
Q-Index Code EX
Additional Notes Removing from HERDC - abstract

 
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Created: Wed, 14 May 2008, 13:06:06 EST by Marie-Louise Moore on behalf of National Res Centre For Environmental Toxicology