37164
Accession Number
30375
Title Of Article Chaper
Gold fingerprinting by laser ablation inductively coupled plasma mass spectrometry
Title Of Journal Book
Spectrochimica Acta
Issue
2
Pages
205-219
Collation
15 p. : ills.
Reference Bibliography
Includes bibliographic references
Language Of Text
English
Literature Type
Serial
Literature Level
Analytic
Abstract
laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MA) has been applied to the characterization of the trace element composition fingerprint of selected gold samples from Western Australia and South Africa. By comparison of the elemental associations it is possible to relate gold to a specific mineralizing event, mine or bullion sample. This methodology facilitates identification of the provenance of stolen gold or gold used in salting activities. In this latter case, it is common for gold from a number of sources to be used in the salting process. Consequently, gold in the prospect being salted will not come from a single source and identification of multiple sources for this gold will establish that salting has occurred. Preliminary results also indicate that specific elemental associations could be used to identify the country of origin of gold. The technique has already been applied in 17 cases involving gold theft in Western Australia, where it is estimated that up to 2% of gold production is relocated each year as a result of criminal activities.
Keywords
gold; analysis; laser; ablation; inductively; coupled; plasma; mass; spectrometry; icp
pub_id
37164