GB/T 8151.25-2023

Methods for chemical analysis of zinc concentrates - Part 25: Determination of indium content by flame atomic absorption spectrometry (English Version)

Standard No.

GB/T 8151.25-2023

Language

Chinese, English version preview

Release Date

2023

Published By

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

Latest

GB/T 8151.25-2023

Scope

This document describes a method for the determination of indium in zinc concentrate. The method is applicable to the determination of indium in zinc concentrate within a determination range (mass fraction) of 0.0002.

Introduction

Chemical analysis method of zinc concentrate: Determination of indium content by flame atomic absorption spectrometry

Standard name	Scope of application	Determination method
Flame atomic absorption spectrometry	Mass fraction is 0.0020%~0.120%	Direct dilution method and potassium iodide-sulfuric acid medium extraction method
Inductively coupled plasma atomic emission spectrometry	Applicable to the determination of multiple elements	Synchronous determination of multiple elements
Wavelength Dispersive X-ray Fluorescence Spectrometry	Suitable for rapid analysis of metals such as zinc and copper	Non-destructive testing

Technical Background and Application Cases

Background:Indium is a rare metal, mainly derived from the associated elements in zinc concentrate. Due to its low content and dispersed distribution, accurate determination is of great significance to its trade settlement and smelting production.

Actual Application Case:A zinc smelter used this standard method to test imported zinc concentrate and found that its indium content was 0.05%, which provided important reference data for its subsequent processing. Through the precise determination of flame atomic absorption spectrometry, the company was helped to optimize the recycling process.

Implementation recommendations

• The laboratory needs to be equipped with an atomic absorption spectrometer that meets the requirements and ensure that its performance indicators meet the standard requirements.
• Analysts should receive professional training and be familiar with the chemical properties of indium and the precautions during the measurement process.
• It is recommended to calibrate the instrument regularly and conduct experiments in strict accordance with standard operating procedures.

GB/T 8151.25-2023 Referenced Document

• GB/T 6682 Water for analytical laboratory use.Specification and test methods

GB/T 8151.25-2023 history

• 2023 GB/T 8151.25-2023 Methods for chemical analysis of zinc concentrates - Part 25: Determination of indium content by flame atomic absorption spectrometry

GB/T 8151.25-2023 -All Parts