GB/T 6730.28-2021
Iron ores—Determination of fluorine content—Ion-selective electrode method (English Version)

Standard No.

GB/T 6730.28-2021

Language

Chinese, Available in English version

Release Date

2021

Published By

国家市场监督管理总局、中国国家标准化管理委员会

Latest

GB/T 6730.28-2021

Replace

GB/T 6730.28-2006

Scope

This document specifies the method for the determination of fluorine content by the ion selective electrode method. This document applies to the determination of fluorine content in natural iron ore, iron concentrate and lump ore, including sintered products. Measuring range (mass fraction): 0.005%~1.00%.

GB/T 6730.28-2021 Referenced Document

• GB/T 10322.1 Iron ore sampling and sample preparation methods*， 2023-08-06 Update
• GB/T 12806 Laboratory glassware.One-mark volumetric flasks
• GB/T 12807 Laboratory glassware一Graduated pipettes
• GB/T 12808 Laboratory glass instrument single marked line pipette
• GB/T 6379.1 Accuracy(trueness and precision)of measurement methods and results Part 1:General principles and definitions
• GB/T 6379.2 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 Water for analytical laboratory use.Specification and test methods
• GB/T 6730.1 Iron ores.Preparation of predried test samples for chemical analysis
• GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

GB/T 6730.28-2021 history

• 2021 GB/T 6730.28-2021 Iron ores—Determination of fluorine content—Ion-selective electrode method
• 2006 GB/T 6730.28-2006 Iron ores.Determination of fluorine content.Ion-selective electrode method
• 1986 GB/T 6730.28-1986 Methods for chemical analysis of iron ores--The ion-selective electrode method for the determination of fluorine content

GB/T 6730.28-2021 -All Parts