GB/T 223.31-2026 Pending National standards

GB/T 223.31-2026 Iron, steel and alloy—Determination of arsenic content—Spectrophotometric method and iodimetric method

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 223.31-2026

Standard Type: National standards

Standard Status: Pending

is_force_gb: no

CCS Name: Analysis methods for steel and iron alloys

ICS Name: Black metal comprehensive

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: 全国钢标准化技术委员会(SAC/TC 183)

Pages: 28 pages

Scope

本文件描述了用分光光度法和碘量法测定钢铁及合金中砷含量的方法。
本文件各方法适用范围为：方法一（蒸馏分离钼蓝分光光度法)适用于钢铁及合金中质量分数为0.000 5%～0.10%砷含量的测定；方法二（次磷酸钠还原碘量法)适用于生铁、碳钢及合金钢中质量分数为0.010%～0.65%砷含量的测定。

Development Information

Drafting Units:

钢研纳克检测技术股份有限公司、钢铁研究总院有限公司、马鞍山钢铁有限公司

Drafting Persons:

张翠敏、罗倩华、马书风、范小芬、孙晓飞、宋祖峰

Word Count: 44 Thousand words Pages: 28 pages

Replace the following standards

GB/T 223.31-2008 Iron,steel and alloy—Determination of arsenic content—Distillation-molybdenum blue spectrophotometric method GB/T 223.32-1994 Methods for chemical analysis of iron, steel and alloy The hypophosphite reduction-iodimetric method for the determination of arsenic content

Referenced Standards

GB/T 6379.1-2004 Accuracy(trueness and precision)of measurement methods and results—Part 1:General principles and definitions 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 6379.3-2012 Accuracy(trueness and precision)of measurement methods and results—Part 3:Intermediate measures of the precision 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 12805-1991 Laboratory glassware—Burettes GB/T 12805-2011 Laboratory glassware—Burettes GB/T 12806-1991 Laboratory glassware—One-mark volumetric flasks GB/T 12806-2011 Laboratory glassware—One-mark volumetric flasks GB/T 12808-1991 Laboratory glassware—One-mark pipettes GB/T 12808-2015 Laboratory glassware—One mark pipettes GB/T 20066-2006 Steel and iron—Sampling and preparation of samples for the determination of chemical composition

Adopt standards

ISO 17058:2004

Related Standards

GB/T 17616-1998 Replaced

GB/T 17616-1998 Unified numbering system for designations of iron,steel and alloy

Publish Date: 1998-12-14

GB/T 5686.4-1998 Replaced

GB/T 5686.4-1998 Methods for chemical analysis of silicomanganese—The phosphomolybdenum blue phtometric method for the determination of phosphorus content

Publish Date: 1998-12-14

GB/T 18255-2000 Replaced

GB/T 18255-2000 Coking viscous oil products—Determination of distillation range

Publish Date: 2000-11-17

GB/T 4223-2004 Replaced

GB/T 4223-2004 Iron and steel scraps

Publish Date: 2004-05-20

GB/T 20066-2006 Active

GB/T 20066-2006 Steel and iron—Sampling and preparation of samples for the determination of chemical composition

Publish Date: 2006-02-05

GB/T 11261-2006 Active

GB/T 11261-2006 Steel and iron—Determination of oxygen content—The pulse heating inert gas fusion-infra-red absorption method

Publish Date: 2006-03-02