GB/T 5195.11-2021Fluorspar—Determination of manganese content—Periodate spectrophotometry and flame atomic absorption spectrometry (English PDF)

Foreword

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

This document is Part 11 of GB/T 5195 "Fluorite". GB/T 5195 has released the following parts.

---Part 1: Determination of calcium fluoride content EDTA titration and distillation-potentiometric titration;

---Part 2: Determination of carbonate content;

---Part 3: The gravimetric method for the determination of mass loss at 105°C;

---Part 4: Determination of sulfide content by iodometric method;

---Part 5: Determination of Total Sulfur Content Tube Furnace Combustion-Potassium Iodate Titration Method;

---Part 6: Determination of Phosphorus Content by Spectrophotometry;

---Part 7: Determination of zinc content by atomic absorption spectrometry;

---Part 8: Determination of silica content;

---Part 9: Determination of ignition loss by gravimetric method;

---Part 10: Determination of iron content, phenanthroline spectrophotometric method;

---Part 11: Determination of manganese content, periodate spectrophotometry and flame atomic absorption spectrometry;

---Part 12: Determination of Arsenic Content by Atomic Fluorescence Spectrometry;

---Part 13: Determination of aluminum content EDTA titration;

---Part 14: Determination of magnesium content by flame atomic absorption spectrometry;

---Part 15: Determination of calcium, aluminum, silicon, phosphorus, sulfur, potassium, iron, barium, and lead content by wavelength dispersive X-ray fluorescence spectrometry;

---Part 16: Determination of silicon, aluminum, iron, potassium, magnesium and titanium content by inductively coupled plasma atomic emission spectrometry;

---Part 17: Gravimetric method for determination of flotation agent content;

---Part 18: Determination of barium sulfate content gravimetric method;

---Part 19: Determination of arsenic content. Silver diethyldithiocarbamate photometric method.

This document replaces GB/T 5195.11-2006 "Fluorite Manganese Content Determination Periodate Spectrophotometric Method", and GB/T 5195.11- In addition to structural adjustments and editorial changes compared to 2006, the main technical changes are as follows.

a) Decide the 2006 edition of periodate spectrophotometry as Method 1 (see Chapter 4);

b) Modified the manganese standard stock solution (see 4.2.9.1, 4.7 of the 2006 edition);

c) The preparation method of periodate solution has been added (see 4.2.8);

d) The model of filter paper used for filtration has been added, the number of washings has been modified, and the residue burning step and melting temperature have been added (see 4.5.3.2, 2006 7.1 of the year edition);

e) Added method two flame atomic absorption spectrometry (see Chapter 5);

f) The flow chart of the procedure for accepting the analysis value of the test sample has been added (see Appendix A).

Introduction

In order to facilitate the detection of elements in fluorite, according to the determination of elements and methods, GB/T 5195 ``Fluorite'' is divided into 19 parts.

---Part 1: Determination of calcium fluoride content EDTA titration and distillation-potentiometric titration;

---Part 2: Determination of carbonate content;

---Part 3: The gravimetric method for the determination of mass loss at 105°C;

---Part 4: Determination of sulfide content by iodometric method;

---Part 5: Determination of Total Sulfur Content Tube Furnace Combustion-Potassium Iodate Titration Method;

---Part 6: Determination of Phosphorus Content by Spectrophotometry;

---Part 7: Determination of zinc content by atomic absorption spectrometry;

---Part 8: Determination of silica content;

---Part 9: Determination of ignition loss by gravimetric method;

---Part 10: Determination of iron content, phenanthroline spectrophotometric method;

---Part 11: Determination of manganese content, periodate spectrophotometry and flame atomic absorption spectrometry;

---Part 12: Determination of Arsenic Content by Atomic Fluorescence Spectrometry;

---Part 13: Determination of aluminum content EDTA titration;

---Part 14: Determination of magnesium content by flame atomic absorption spectrometry;

---Part 15: Determination of calcium, aluminum, silicon, phosphorus, sulfur, potassium, iron, barium, and lead content by wavelength dispersive X-ray fluorescence spectrometry;

---Part 16: Determination of silicon, aluminum, iron, potassium, magnesium and titanium content by inductively coupled plasma atomic emission spectrometry;

---Part 17: Gravimetric method for determination of flotation agent content;

---Part 18: Determination of barium sulfate content gravimetric method;

---Part 19: Determination of arsenic content. Silver diethyldithiocarbamate photometric method.

Warning---Personnel using this document should have formal laboratory work experience. This document does not point out all possible security issues.

The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated by relevant national laws and regulations.

1 Scope

This document specifies the use of periodate spectrophotometry and flame atomic absorption spectrometry to determine manganese content.

This document is applicable to the determination of manganese content in fluorite, the measurement range (mass fraction). 0.006%~0.40%.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 6379.2 Accuracy of measurement methods and results (accuracy and precision) Part 2: Determine the repeatability of standard measurement methods Basic methods of sex and reproducibility

GB/T 6682 Analytical laboratory water specifications and test methods

GB/T 7728 General Rules of Flame Atomic Absorption Spectrometry for Chemical Analysis of Metallurgical Products

GB/T 7729 General Rules of Spectrophotometry for Chemical Analysis of Metallurgical Products

GB/T 8170 Numerical rounding rules and the expression and determination of limit values

GB/T 12806 Laboratory glassware single mark volumetric flask

GB/T 12807 Indexing pipette for laboratory glass instruments

GB/T 12808 Single-marked pipette for laboratory glassware

GB/T 22564 Sampling and sample preparation of fluorite

3 Terms and definitions

There are no terms and definitions that need to be defined in this document.

4 Periodate spectrophotometry (Method 1)