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Chinese National Standard Category: Precious metal ore

English Title: Methods for analysis of noble metals in geochemical samples - Part 4: Determination of iridium content - Preconcentration by thiourea-catalytic spectrophotometric method
Chinese Title: 地球化学样品中贵金属分析方法 第4部分:铱量的测定 硫脲富集-催化分光光度法
Standard No.: GB/T 17418.4-2010
Category No.: D46
Issued by: AQSIQ, SAC
Issued on: 2010-11-10
Implemented on: 2011-2-1
Status: valid
Superseded by:
Superseded on:
Abolished on:
Superseding:GB/T 17418.4-1998 Methods for analysis of noble metals in geochemical samples--Determination of iridium content-Preconcentration by thiourea-Catalytic spectrophotometric method
Word Count:6000 words
Similar Standards: T/CGA 39-2023   GB/T 20899.15-2023   GB/T 20899.8-2022   GB/T 7739.8-2022   GB/T 20899.7-2022   GB/T 7739.7-2022   GB/T 14352.24-2022   YS/T 3044-2022   YS/T 3045-2022   GB/T 20899.5-2021   GB/T 20899.4-2021   GB/T 20899.6-2021   GB/T 7739.4-2021   GB/T 7739.1-2019   GB/T 20899.1-2019   GB/T 20899.2-2019   GB/T 20899.3-2019   GB/T 7739.3-2019   GB/T 7739.2-2019   GB/T 7739.14-2019  
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