GB/T 6609.12-2018

Chemical analysis methods and determination of physical performance of alumina—Part 12：Determination of zinc oxide content—Flame atomic absorption spectrometry method (English Version)

Standard No.

GB/T 6609.12-2018

Language

Chinese, Available in English version

Release Date

2018

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 6609.12-2018

Replace

GB/T 6609.12-2004

Scope

This part of GB/T6609 specifies the determination of zinc oxide content in alumina. This part is applicable to the determination of zinc oxide content in alumina. Determination range: 0.0010%~0.040%

Introduction

GB/T 6609.12—2018 Standard Overview

Standard Framework Dimensions	Description	Comparative Analysis
Measurement Range	Zinc Oxide Content$0.0010\% \sim 0.040\%$	Compared with the old version, the scope of application has been significantly expanded.
Measurement Method	Flame Atomic Absorption Spectrometry	Retain traditional advantages and introduce new instrument and equipment requirements.
Reagents and instruments	PTFE sealed sample dissolver, high-precision atomic absorption spectrometer, etc.	Add technical indicators and requirements for instruments and equipment to improve accuracy.

Standard formulation background and technology evolution analysis

The GB/T 6609.12 series of standards has been revised many times since its first release in 1986, reflecting the technological progress in the field of alumina chemical analysis. This revision mainly aims at the expansion of the measurement range, the improvement of instrument and equipment requirements, and the optimization of experimental steps.

Analysis of core changes

• Expansion of measurement range: The new version of the standard expands the measurement range of zinc oxide content from $0.0004\% \sim 0.0200\%$ to $0.0010\% \sim 0.040\%$, significantly improving the breadth of application of the method.
• Requirements for instruments and equipment: A new diagram of the polytetrafluoroethylene sealed sample dissolver device is added, and higher requirements are put forward for the characteristic concentration, precision and linearity of the working curve of the atomic absorption spectrometer.
• Optimization of experimental steps: The introduction of aluminum matrix compensation technology effectively eliminates the interference of aluminum elements and improves the accuracy of the measurement results.

Implementation Suggestions

To ensure the effective implementation of GB/T 6609.12—2018 standard, the following suggestions are made:

1. Equipment calibration: Regularly calibrate the atomic absorption spectrometer to ensure that its performance indicators meet the requirements.
2. Staff training: Organize relevant personnel to participate in standard interpretation and technical training to improve operational level.
3. Quality control: Establish a quality assurance system and regularly use standard samples for calibration to ensure the reliability of measurement results.

GB/T 6609.12-2018 history

• 2018 GB/T 6609.12-2018 Chemical analysis methods and determination of physical performance of alumina—Part 12：Determination of zinc oxide content—Flame atomic absorption spectrometry method
• 2004 GB/T 6609.12-2004 Chemical analysis methods and determination of physical performance of alumina Determination of zinc oxide content-Flame atomic absorption spectrophotometric method
• 1986 GB/T 6609.12-1986 Methods for the chemical analysis of aluminium oxide--The atomic absorption spectrophotometric method for the determination of zinc oxide content

GB/T 6609.12-2018 -All Parts