GB/T 47974.2-2026Iron-bearing dust and sludge — Determination of copper and barium content — Inductively coupled plasma atomic emission spectrometry (English PDF)

1 Scope

This document describes a method for determining copper and barium content using inductively coupled plasma atomic emission spectrometry.

This document applies to the determination of copper and barium content in iron-containing dust and sludge. Copper content (mass fraction). 0.002 0%~1.50%, barium content (mass fraction). 0.002 0%~1.50%.

(Score). 0.002 0%~4.00%.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are listed below.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 6379.1 Accuracy (correctness and precision) of measurement methods and results - Part 1.General principles and definitions

GB/T 6379.2 Accuracy (correctness and precision) of measurement methods and results - Part 2.Determining the repeatability of standard measurement methods

GB/T 6682 Specifications and test methods for water used in analytical laboratories

GB/T 6730.1 Preparation of pre-dried samples for iron ore analysis

GB/T 8170 Rules for rounding off numerical values and the representation and determination of limiting values

GB/T 10322.1 Sampling and Sample Preparation Methods for Iron Ore

GB/T 12806 Laboratory Glassware - Single-mark volumetric flasks

GB/T 12807 Graduated Pipettes for Laboratory Glassware

GB/T 12808 Laboratory Glassware - Single-mark Pipettes

JJG 768 emission spectrometer

3 Terms and Definitions

This document does not contain any terms or definitions that need to be defined.

4 Principles

The sample is decomposed using hydrochloric acid, nitric acid, hydrofluoric acid, and perchloric acid. In a hydrochloric acid medium, the sample solution is atomized and then introduced into an argon plasma atmosphere via a carrier gas.

In the daughter torch flame, atoms of the analyte are excited to emit characteristic spectra, and the concentration of the analyte in the test solution is directly proportional to the intensity of its characteristic spectral lines.

The concentration of the element to be tested in the test solution is calculated by measuring the signal intensity of characteristic spectral lines.

5 Reagents

Unless otherwise specified, use only reagents of approved analytical purity or higher, and the water used in the experiments should meet the Class II standard specified in GB/T 6682.

Distilled water of 100% or higher purity, or water of equivalent purity.