GB/T 12690.11-2025 Active National standards

GB/T 12690.11-2025 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 11:Determination of magnesium content—Flame atomic absorption spectrometric method

Publish Date: 2025-08-01 Implement Date: 2026-02-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 12690.11-2025

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: 2025-08-01

Implement Date: 2026-02-01

Publisher: 国家市场监督管理总局、国家标准化管理委员会

Technical Committee: 全国稀土标准化技术委员会(SAC/TC 229)

Pages: 12 pages

Scope

本文件描述了火焰原子吸收光谱法测定稀土金属及其氧化物中镁含量的方法。
本文件适用于稀土金属及其氧化物中镁含量的测定，测定范围（质量分数）：0.000 5%~0.30%。

Development Information

Drafting Units:

江阴加华新材料资源有限公司、中稀(凉山)稀土有限公司、江西省钨与稀土产品质量监督检验中心(江西省钨与稀土研究院)、定南大华新材料资源有限公司、国瑞科创稀土功能材料(赣州)有限公司、包头市三隆稀有金属材料有限责任公司、包头市宏博特科技有限公司

Drafting Persons:

谢建伟、江海波、姚京璧、樊成美、吉启霞、徐娜、康亚先、曾庆平、缪峰梅、王伟生、王昊、吕楠楠、杨大伟

Word Count: 15 Thousand words Pages: 12 pages

Replace the following standards

GB/T 12690.11-2003 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Determination of magnesium content—Flame atomic absorption spectrometric method

Referenced Standards

GB/T 6379.2-2004 Accuracy(trueness and precision)of measurement methods and results—Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method 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 JJG 694-2009 Atomic Absorption Spectrophotometers JJG 694-1990 Verification Regulation for Atomic Absorption Spectrophotometer JJG 694-2025 Verification Regulation of Atomic Absorption Spectrophotometers

Related Standards

GB/T 13840-1992 Abolished

GB/T 13840-1992 Wafer carriers

Publish Date: 1992-12-28

GB/T 15677-1995 Replaced

GB/T 15677-1995 Lanthanum metal

Publish Date: 1995-08-11

GB/T 3136-1995 abolished_transferred

GB/T 3136-1995 Tantalum powders

Publish Date: 1995-10-17

GB/T 3463-1995 Abolished

GB/T 3463-1995 Tantalum wires

Publish Date: 1995-10-17

GB/T 3628-1995 Replaced

GB/T 3628-1995 Tantalum and tantalum alloy foils

Publish Date: 1995-10-17

GB/T 16476-1996 Replaced

GB/T 16476-1996 Scandium metal

Publish Date: 1996-07-09