Determination of gold in jewellery alloy

Project Description

The goal of this project is to provide a comparison of laboratories' analytical capabilities for the determination of gold in reference material containing 750 (±20) mg/g Au in a quadruple alloy (Au-Ag-Cu-Zn). Reference material to be used in this comparison represent a typical type of jewellery gold alloy. The coordinating laboratory within IMBIH will prepare the the alloy and certify reference value for gold content traceable to NIST SRM 685-R. Standard method to be used by participants is ISO 11426 (Determination of gold in gold jewellery alloys - cupelation method).

Results of this project will demonstrate analytical capabilities of participating laboratories.

Timescale

End of May 2015 - PT sample distributed with PT protocol by pilot laboratory

End of July 2015 - Results submitted by participants

End of September 2015 - Report submitted by pilot laboratory

Final Report 2016-06-23

The project has been completed and the report can be downloaded here>>

The results of the comparisons show analytical capabilities of participating laboratories and objective review of their performance and technical competence.

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Subjects
Metrology in Chemistry (MC)

Subjects

Metrology in Chemistry (MC)

Coordinator
Aida Jotanovic (IMBiH)

Coordinator

Aida Jotanovic (IMBiH)

Coordinating Institute
IMBiH (Bosnia and Herzegovina)

Coordinating Institute

IMBiH (Bosnia and Herzegovina)

Participating Partners
DMDM (Serbia)
DZM (Croatia)
GUM (Poland)
KMA (Kosovo * (*This designation is without prejudice to positions on status, and is in line with UNSC 1244 and the ICJ Opinion on the Kosovo declaration of independence.))

Participating Partners

DMDM (Serbia)

DZM (Croatia)

GUM (Poland)

KMA (Kosovo * (*This designation is without prejudice to positions on status, and is in line with UNSC 1244 and the ICJ Opinion on the Kosovo declaration of independence.))