GB/T 12690.13-2026 Pending National standards

GB/T 12690.13-2026 Chemical analysis methods of non-rare earth impurities in rare earth metals and their oxides—Part 13:Determination of molybdenum and tungsten content

Publish Date: 2026-02-27 Implement Date: 2026-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 12690.13-2026

Standard Type: National standards

Standard Status: Pending

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: 2026-02-27

Implement Date: 2026-09-01

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: 16 pages

Scope

本文件描述了稀土金属中钼、钨含量的测定方法。
本文件适用于稀土金属中钼、钨含量的测定。电感耦合等离子体发射光谱法(方法1)测定范围(质量分数):0.0050%～0.50%。电感耦合等离子体质谱法(方法2)测定范围(质量分数):0.0001%~0.10%。当测定范围出现重叠时，以方法1作为仲裁方法。

Development Information

Drafting Units:

包头稀土研究院、国标(北京)检验认证有限公司、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、中稀(凉山)稀土有限公司、厦门稀土材料研究所、中国科学院宁波材料技术与工程研究所

Drafting Persons:

常诚、杜梅、张昊、王丽娟、包香春、范小龙、祝利红、徐娜、赵莎莎、刘艳、于瀛、王斌、曾强、黄南生、袁红霞、张其凯、张公军、陈添连、弋恒、袁晓红、李莹

Word Count: 21 Thousand words Pages: 16 pages

Replace the following standards

GB/T 12690.13-2003 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Determination of molybdenum and tungsten content—Inductively coupled plasma atomic emission spectrographic method and Inductively coupled plasma mass spectrum 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 JJG 768-2005 Emission Spectrometer

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