GB/T 12690.12-2024 Active National standards

GB/T 12690.12-2024 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 12:Determination of thorium and uranium contents—Inductively coupled plasma mass spectrum method

GB/T 12690.12-2024 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 12:Determination of thorium and uranium contents—Inductively coupled plasma mass spectrum method

Publish Date: 2024-04-25 Implement Date: 2024-11-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 12690.12-2024

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Analysis methods for rare metals and their alloys

ICS Name: Other non-ferrous metals and their alloys

Publish Date: 2024-04-25

Implement Date: 2024-11-01

Pages: 16 pages

Scope

This document describes the method for determining the content of thorium and uranium in rare earth metals and their oxides. This document is applicable to the determination of the content of thorium and uranium in rare earth metals and their oxides. The determination range (mass fraction): thorium content 0.0005%~0.020%; uranium content 0.0005%~0.020%.

Development Information

Word Count: 17 Thousand words Pages: 16 pages

Same series standard

GB/T 12690.20-2024 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 20:Determination of minor amounts of fluorine and chlorine in rare earth oxides—Ion chromatography method GB/T 12690.21-2024 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 21:Determination of sulfate radical content in rare earth oxides—Barium sulfate turbidimetry

Replace the following standards

GB/T 12690.12-2003 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides Determination of thorium content Arsenazo III spectrophotometric method and Inductively coupled plasma mass spectrum method

Referenced Standards

GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values JJF 1159-2006 Calibration Specification for Quadrupole Inductively Coupled Plasma Mass Spectrometers

Related Standards

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GB/T 13840-1992 Wafer carriers

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GB/T 3136-1995 abolished_transferred

GB/T 3136-1995 Tantalum powders

Publish Date: 1995-10-17

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GB/T 3463-1995 Tantalum wires

Publish Date: 1995-10-17

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GB/T 16476-1996 Replaced

GB/T 16476-1996 Scandium metal

Publish Date: 1996-07-09