GB/T 17418.4-1998
Methods for analysis of noble metals in geochemical samples--Determination of iridium content-Preconcentration by thiourea-Catalytic spectrophotometric method (English Version)
- Standard No.
- GB/T 17418.4-1998
- Language
- Chinese, Available in English version
- Release Date
- 1998
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2011-02
- Replace By
- GB/T 17418.4-2010
- Latest
- GB/T 17418.4-2010
- Scope
- This standard specifies the method for the determination of iridium in geological materials. This standard is applicable to the determination of iridium in rocks and geological materials containing platinum group elements such as ultrabasic rocks. Measuring range: 1×10-9～5×10-6.
GB/T 17418.4-1998 history
- 2010 GB/T 17418.4-2010 Methods for analysis of noble metals in geochemical samples.Part 4:Deternination of iridium content.Preconcentration by thiourea-catalytic spectrphotometric method
- 1998 GB/T 17418.4-1998 Methods for analysis of noble metals in geochemical samples--Determination of iridium content-Preconcentration by thiourea-Catalytic spectrophotometric method
GB/T 17418.4-1998 -All Parts
GB/T 17418.1-2010 Methods for analysis of noble metals in geochemical samples.Part 1:General rules and regulations
GB/T 17418.2-2010 Methods for analysis of noble metals in geochemical samples.Part 2:Determination of platinum and rhodium content.Preconcentration by thiourea-catalytic polarographic method
GB/T 17418.3-2010 Methods for analysis of noble metals in geochemical samples.Part 3:Determination of palladium content.Preconcentration by thiourea-graphite furnace atomic absorption spectrophotometric method
GB/T 17418.4-2010 Methods for analysis of noble metals in geochemical samples.Part 4:Deternination of iridium content.Preconcentration by thiourea-catalytic spectrphotometric method
GB/T 17418.5-2010 Methods for analysis of noble metals in geochemical samples.Part 5:Determination of ruthenium and osmium content.Separationby distillation-catalytic spectrophometric method
GB/T 17418.6-2010 Methods for analysis of noble metals in geochemical samples.Part 6:Determination of platinum,palladium and gold content.Preconcentration by fire assay-emission spectrometry
GB/T 17418.7-2010 Methods for analysis of noble metals in geochemical samples.Part 7:Determination of platinum group elements.By nickel sulfide fire assay-inductively coupled plasma mass spectrometry