GB/T 17415.2-1998 Replaced National standards

GB/T 17415.2-1998 Methods for chemical analysis of Tantalum and Niobium ores—Determination of Niobium content—Preconcentration and separation with silica gel—Thiocyanate extraction photometric method

Publish Date: 1998-06-17 Implement Date: 1999-01-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 17415.2-1998

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: \nRare metal mines

ICS Name: \nMetal ores

Publish Date: 1998-06-17

Implement Date: 1999-01-01

Pages: 5 pages

Development Information

Word Count: 7 Thousand words Pages: 5 pages

Same series standard

GB/T 17415.1-1998 Methods for chemical analysis of Tantalum and Niobium ores—Determination of Tantalum content—Preconcentration and separation with silica gel-Butyl rhodamine B extraction photometric method

Superseded by the following standards

GB/T 17415.2-2010 Methods for chemical analysis of tantalum and niobium ores—Part 2:Determination of niobium content

Referenced Standards

GB 1.4-88 GB/T 14505-93

Related Standards

GB/T 3714-1983 Replaced

GB/T 3714-1983 Technical requirements of manganese carbonate ore powder

Publish Date: 1983-05-24

GB/T 4414-1984 Replaced

GB/T 4414-1984 Methods of sampling and sample preparation of tungsten concentrates in bags

Publish Date: 1984-05-29

GB/T 6150.10-1985 Replaced

GB/T 6150.10-1985 Methods for chemical analysis of tungsten concentrates—The thiocyanate photometric method for the determination of molybdenum content

Publish Date: 1985-06-21

GB/T 6150.11-1985 Replaced

GB/T 6150.11-1985 Methods for chemical analysis of tungsten concentrates—The atomic absorption spectrophotometric method for the determination of copper content

Publish Date: 1985-06-21

GB/T 6150.1-1985 Replaced

GB/T 6150.1-1985 Methods for chemical analysis of tungsten concentrates—The ammonium tungstate igniting gravimetric method for the determination of tungsten trioxide content

Publish Date: 1985-06-21

GB/T 6150.12-1985 Replaced

GB/T 6150.12-1985 Methods for chemical analysis of tungsten concentrates—The hydrochloric acid-sodium chloride supporting electrolyte polarographic method for the determination of lead content

Publish Date: 1985-06-21