Are-There-Further-Challenges-for-ICP-OES-in-Precious-Metals-Beyond-the-ISO-Regulations-AR25.pdf

1、Are there further challenges for ICP-OES in precious metals beyond the ISO regulations?Dr.Dirk Wstkamp,Senior Product Specialist ICP-OES,SPECTRO Analytical Instruments GmbHLBMA ASSAYING&REFINING Conference 2025 Precious metalFinenessRecommended methodAg50-990ISO DIS 19919(DIN 32562)333-990ISO 11427+

2、13756800-990ISO 11427+13756 999ISO 15096+18214999.9ISO 15096999.99ISO 15096Au100-999ISO 1142650-990ISO AWI 25644 999ISO 15093+18214999.9ISO 15093999.99ISO 15093999.999ISO 5724Pt50-990ISO 11210 990ISO 11494 999ISO 15093+18214Pd50-990ISO 11490 990ISO 11495 999ISO 15093+18214ISO/TC 174-Jewellery and pr

3、ecious metalsISO/TC 174/WG 1 Methods fordetermining finenessISO 15096 DSOI-Limit of detection in 50 g/L Silver 4/99.9996What purity level can beassessed by ICP-OES?1/99.9999ASTM B413-97a*(5)maximum Limits ASTM 99.9944 elements versus 7 elements 10/99.999What purity level can beassessed by ICP-OES?IS

4、O 15093-DSOI-Limit of detection in 20 g/L Gold 4/99.9996ASTM B 562-95*(5)maximum Limits ASTM 99.99539 elements versus 13 elements 24/99.997What purity level can beassessed by ICP-OES?ISO 15093-DSOI-Limit of detection in 20 g/L PlatinumASTM B561-94 14/99.998*(25)maximum Limits ASTM 999.942 elements v

5、ersus 24 elements 23/99.997What purity level can beassessed by ICP-OES?ISO 15093-DSOI-Limit of detection in 20 g/L PaladiumASTM B589-94 10/99.999*(25)maximum Limits ASTM 999.542 elements versus 20 elementsASTM Fineness of other precious metal alloysother precious metalsASTMFinenessElementspecificati

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