GB/T 34500.6-2026Chemical analysis methods for rare earth residues and waste water — Part 6: Determination of thallium and vanadium contents — Inductively coupled plasma mass spectrometry (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

This document is Part 6 of GB/T 34500, "Chemical Analysis Methods for Rare Earth Waste Residue and Wastewater". GB/T 34500 has already published the following... part.

---Part 1: Determination of Fluoride Ion Content by Ion-Selective Electrode Method;

---Part 2: Determination of Chemical Oxygen Demand (COD);

---Part 3: Determination of weak radioactivity (total alpha and beta activity);

---Part 4: Determination of the content of copper, zinc, lead, chromium, cadmium, barium, cobalt, manganese, nickel, and titanium by inductively coupled plasma atomic emission spectrometry;

---Part 6: Determination of Thallium and Vanadium Content by Inductively Coupled Plasma Mass Spectrometry;

---Part 7: Determination of Thorium and Uranium Content by Inductively Coupled Plasma Mass Spectrometry Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

Introduction

Rare earth waste residue and wastewater mainly refer to various waste materials generated in the entire process of rare earth resource development and utilization, specifically covering rare earth mining.

This document covers the waste residue and wastewater discharged during the operational phases, ore beneficiation and processing, metal smelting and refining processes, and subsequent deep processing steps.

The focus is on heavy metals and other harmful components contained in waste residue and wastewater that may pose a potential threat to environmental quality and human health. We will conduct research on standard testing methods.

GB/T 34500, "Chemical Analysis Methods for Rare Earth Waste Residue and Wastewater," has established a set of scientific methods through systematic experimental research and extensive practical verification.

Learn a complete, practical, and environmentally friendly technical methodology and standard system to guide enterprises in implementing these systems during the development and utilization of rare earth resources.

The concepts of energy conservation, emission reduction, and environmental protection provide standardized technical guidance for related industries.

Depending on the testing object and testing method, GB/T 34500 is proposed to consist of 7 parts.

---Part 1: Determination of Fluoride Ion Content using Ion-Selective Electrode Method. The aim is to establish an ion-selective electrode method for the determination of fluoride ion content.

---Part 2: Determination of Chemical Oxygen Demand (COD). The aim is to establish a potassium dichromate titration method and a chlorine correction method for the determination of chemical oxygen demand (COD). Methods for measuring oxygen demand (COD);

---Part 3: Determination of Weak Radioactivity (Total alpha and beta Activities). The aim is to establish a method for determining weak radioactivity (total alpha and beta activities). method;

---Part 4: Determination of the amounts of copper, zinc, lead, chromium, cadmium, barium, cobalt, manganese, nickel and titanium by inductively coupled plasma atomic emission spectrometry.

The aim is to establish an inductively coupled plasma atomic emission spectrometry (ICP-AES) method for determining the amounts of copper, zinc, lead, chromium, cadmium, barium, cobalt, manganese, nickel, and titanium. method;

---Part 5: Determination of Ammonia Nitrogen. The aim is to establish Nessler's reagent spectrophotometric method, salicylic acid spectrophotometric method, and distillation-... Methods for determining ammonia nitrogen by titration;

---Part 6: Determination of Thallium and Vanadium Content by Inductively Coupled Plasma Mass Spectrometry. The aim is to establish an inductively coupled plasma mass spectrometry (ICP-MS) method. Methods for determining thallium and vanadium content by spectroscopic methods;

---Part 7: Determination of Thorium and Uranium Content by Inductively Coupled Plasma Mass Spectrometry. The aim is to establish an inductively coupled plasma mass spectrometry (ICP-MS) method.

A method for determining the content of thorium and uranium by spectroscopic methods.

This document describes the determination of thallium and vanadium content in rare earth waste residue and wastewater using inductively coupled plasma mass spectrometry (ICP-MS). Mass spectrometry is used because it requires specific sample characteristics.

Its advantages, including low detection limits, fast detection speed, and the ability to perform simultaneous multi-element analysis, have led to its widespread application in trace element analysis. To ensure sample... Representativeness. This document selects rare earth slag from northern and southern regions, waste residue from the comprehensive utilization of secondary rare earth resources, pyrometallurgical slag, and hydrometallurgical slag.

Wastewater from smelting, wastewater from the comprehensive utilization of rare earth secondary resources, and wastewater from pyrometallurgical smelting were all treated as a unified method for verification. During the preparation of this document, consideration was given to... The selection of isotopes and internal standard elements, the choice of acidity, the limit of detection and the lower limit of determination, the spiked recovery rate, and the method precision were all considered.

The method was used to determine the optimal detection conditions for thallium and vanadium in rare earth waste residue and wastewater, and it is characterized by its simplicity, speed, precision, and accuracy.

Chemical analysis methods for rare earth waste residue and wastewater Part 6: Determination of Thallium and Vanadium Content Inductively Coupled Plasma Mass Spectrometry Warning---This document does not cover all potential safety issues. Users are responsible for taking appropriate safety and health precautions and ensuring safety.

It meets the conditions stipulated by relevant national laws and regulations.

1 Scope

This document describes the thallium and vanadium content in rare earth waste residue and wastewater generated during mining, mineral processing, smelting, and comprehensive utilization of rare earth secondary resources. The determination method.

This document applies to the content of thallium and vanadium in rare earth waste residue and wastewater generated during mining, mineral processing, smelting, and comprehensive utilization of rare earth secondary resources. The determination.

The detection limits and lower limits of determination for rare earth waste residue and wastewater are shown in Table 1.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

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 to this document.

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

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

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

JJF1159 Quadrupole Inductively Coupled Plasma Mass Spectrometer Calibration Specification

HJ/T 299 Leaching Toxicity of Solid Waste - Leaching Methods (Sulfuric Acid and Nitric Acid Methods)

HJ493 Technical Specifications for the Preservation and Management of Water Quality Samples

3 Terms and Definitions

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