GB/T 9489-2024 in English

VALID

Methods for chemical analysis of alundum powder

Issued on:2024-11-28
Implemented on:2025-06-01
File Format:PDF
Delivery:Within 1 day

Price(USD)： $348.00
$338.00

Standard No:	GB/T 9489-2024
Document status:	VALID
Title in English:	Methods for chemical analysis of alundum powder
Title in Chinese:	刚玉粉化学分析方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Within 1 day
Issued on:	2024-11-28
Implemented on:	2025-06-01
Superseding:	GB/T 9489-2008 Chemical analysis methods of alundum powder
ICS Classification:	91.100.10-Cement. Gypsum. Lime. Mortar
Chinese Classification:	Q62-Gypsum product
Professional Classification:	GB-National Standard
Related Keywords:	alundum powder introduction analysis icp-oes analysis atomic absorption method atomic absorption chemical analysis atomic absorption method
Related Topics:	Powder composition analysis method cod chemical analysis method Corundum Synthesis Method

《GB/T 9489-2024刚玉粉化学分析方法》由TC406（全国非金属矿产品及制品标准化技术委员会）归口，主管部门为中国建筑材料联合会。

Introduction

Analysis of the core content of the standard

Test items	Method principle	Instruments and equipment	Measurement range
Multi-element determination	ICP-OES method	Inductively coupled plasma optical emission spectrometer	0.0065%-2.0%
Metal oxides	Atomic absorption method	Atomic absorption spectrophotometer	0.01%-1.0%
Aluminum oxide	Complexometric titration	Analytical balance	≥90%

Key technology updates

Main revisions to the 2024 version of the standard:

New Safety warning clause to clarify experimental safety responsibilities
Optimize the preparation parameters of silica standard solution (the volumetric flask is adjusted from 200mL to 1000mL)
Correct the flame type of Ca/Mg elements in the atomic absorption method to air-acetylene flame
Improve the order of adding flux (borax-sodium carbonate mixed flux)

Typical application cases

Case 1: A company used ICP-OES to determine the Fe₂O₃ content in corundum powder. By adding matrix-matched Al₂O₃ solution (10 mg/mL), the matrix interference was effectively eliminated, and the RSD was <1.5%.

Case 2: The laboratory compared the new and old standards to determine TiO₂. The linear range of the new working curve was extended to 0.005%-5.0%, and the detection limit was reduced by 40%.

Implementation recommendations

Sample pretreatment needs to be strictly controlled at 205-215℃ for sealed digestion for 8-10 hours
For ICP-OES analysis, it is recommended to use the axial observation mode to improve sensitivity
The boiling time of potassium fluoride substitution reaction in complexometric titration needs to be controlled to 2-3 minutes
Regularly verify instrument performance, and it is recommended to calibrate with GBW standard materials every month