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Silver

Acid digestions or fire assay for silver analysis

For maximum sensitivity and precision on trace and low-level silver an acid digest is recommended. We offer silver from both aqua regia and four acid digestions. However, depending on the nature of silver from certain projects, nugget effect can be an issue. In this case duplicate analysis may help to detect sampling error at these low levels. For higher grade samples, fire assay may be a preferable choice due to the larger aliquot sizes used for analysis (generally 30g or 50g).

Análise de metais preciosos

Silver analysis

Multiple method options for silver are available and best choice depends on the silver grade and the nature of silver in the sample. Acid decomposition is recommended for low level silver with the choice between aqua regia and four-acid depending on silver occurrence. Fire assay for higher grade or coarse silver samples is suggested.

Options for silver analysis

Prata
Code Analyte Range (ppm) Description
Trace Level
Ag-ICP41
(Ag-AA45)		 Ag 0.2-100 Ag by aqua regia digestion and ICP-AES or AAS. 0.5g sample
Ag-ICP61
(Ag-AA61)		 Ag 0.5-100 Ag by HF-HNO3-HClO4 digestion, HCl leach and ICP-AES or AAS. 0.25g sample
Ore Grade
Ag-OG46
(Ag-AA46)		 Ag 1-1,500 Ag by aqua regia digestion, ICP-AES or AAS finish. 0.5g sample
Ag-OG62
(Ag-AA62)		 Ag 1-1,500 Ag by HF-HNO3-HClO4 digestion with HCl leach, ICP-AES or AAS finish. 0.4g sample
Ag-GRA21
Ag-GRA22		 Ag 5-10,000 Ag by fire assay and gravimetric finish - 30g sample
Ag by fire assay and gravimetric finish - 50g sample
ME-GRA21 Au
Ag		 0.05-10,000
5-10,000		 Au and Ag by fire assay and gravimetric finish. 30g sample
ME-GRA22 Au
Ag		 0.05-10,000
5-10,000		 Au and Ag by fire assay and gravimetric finish. 50g sample

Related resources

Generative exploration

Other multi-element methods that report silver are discussed in the Generative Exploration section.

MORE INFORMATION
 
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