GB/T 42906-2023Graphite materials—Test method for equivalent boron contents—Inductively coupled plasma atomic emission 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" Drafting.

1 Scope

This document describes the use of an inductively coupled plasma atomic emission spectrometer (ICP spectrometer for short) to measure the equivalent boron content of graphite materials.

Principles of quantity, instruments and equipment, reagents and materials, samples, test procedures, result calculations and test reports.

This document applies to lithium, boron, sodium, silicon, potassium, calcium, titanium, vanadium, chromium, manganese, iron, Determination of equivalent boron content of 25 elements including cobalt, nickel, copper, strontium, molybdenum, silver, cadmium, barium, samarium, europium, gadolinium, dysprosium, thorium and uranium. other elements or other materials The measurement can be used as a reference.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 1427 Carbon material sampling method

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

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

GB/T 40408 Nuclear-grade isostatic graphite for internal components of high-temperature gas-cooled reactors

JJG768 Calibration procedures for emission spectrometers

3 Terms and definitions

The following terms and definitions apply to this document.