GB/T 3260.11-2023Methods for chemical analysis of tin—Part 11: Determination of copper,iron,bismuth,lead,antimony,arsenic,aluminum,zinc,cadmium,silver,nickel and cobalt 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.

This document is Part 11 of GB/T 3260 "Chemical Analysis Methods for Tin". GB/T 3260 has released the following parts.

---Part 1: Determination of copper content by flame atomic absorption spectrometry;

---Part 2: Determination of iron content 1,10-phenanthroline spectrophotometric method;

---Part 3: Determination of bismuth content by potassium iodide spectrophotometry and flame atomic absorption spectrometry;

---Part 4: Determination of lead content by flame atomic absorption spectrometry;

---Part 5: Determination of antimony content by malachite green spectrophotometry;

---Part 6: Determination of arsenic content Malachite green-arsenic molybdenum heteropoly acid spectrophotometry;

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

---Part 8: Determination of zinc content by flame atomic absorption spectrometry;

---Part 9: Determination of sulfur content by high-frequency induction furnace combustion infrared absorption method;

---Part 10: Determination of cadmium amount by flame atomic absorption spectrometry;

---Part 11: Determination of copper, iron, bismuth, lead, antimony, arsenic, aluminum, zinc, cadmium, silver, nickel and cobalt content by inductively coupled plasma atomic emission radioactive spectroscopy.

Introduction

Tin has excellent properties such as soft texture, low melting point, and strong malleability. It is mainly used in the manufacture of solder, tin-plated sheets, alloys, chemical products, etc.

The GB/T 3260 "Tin Chemical Analysis Methods" series of standards aims to establish a complete set of tin chemical analysis methods, combined with the optimization of the standard system The requirements are planned to be composed of 8 parts after integration.

---Part 1: Determination of copper, lead, zinc, cadmium, silver, nickel and cobalt content by flame atomic absorption spectrometry;

---Part 2: Determination of iron content 1,10-phenanthroline spectrophotometric method;

---Part 3: Determination of bismuth content by potassium iodide spectrophotometry and flame atomic absorption spectrometry;

---Part 5: Determination of antimony content by malachite green spectrophotometry;

---Part 6: Determination of arsenic content Malachite green-arsenic molybdenum heteropoly acid spectrophotometry;

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

---Part 9: Determination of sulfur content by high-frequency induction furnace combustion infrared absorption method;

---Part 11: Determination of copper, iron, bismuth, lead, antimony, arsenic, aluminum, zinc, cadmium, silver, nickel and cobalt content by inductively coupled plasma atomic emission radioactive spectroscopy.

Inductively coupled plasma atomic emission spectroscopy has the advantages of simultaneous determination of multiple elements and low detection limit, and has been widely used in non-ferrous metals and their Determination of impurity elements in compounds. The method described in this document can achieve the simultaneous determination of 12 impurity elements in tin products. The method is fast and Accurate, it is of great significance to promote the production and trade of tin products.

Warning - Personnel using this document should have practical experience in regular laboratory work. This document does not address all possible security issues question. Users are responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated in relevant national regulations.

1 Scope

This document describes the use of inductively coupled plasma atomic emission spectrometry for the determination of copper, iron, bismuth, lead, antimony, arsenic, aluminum, zinc, cadmium, silver, Test methods for nickel and cobalt content.

This document is applicable to the determination of copper, iron, bismuth, lead, antimony, arsenic, aluminum, zinc, cadmium, silver, nickel and cobalt in tin, among which the determination of bismuth, lead, antimony and arsenic The range (mass fraction) is 0.0020%~0.050%. The measurement range (mass fraction) of copper, iron, aluminum, zinc, cadmium, silver, nickel and cobalt is 0.0003%~0.050%.

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 6682 Specifications and test methods for water used in analytical laboratories

3 Terms and definitions

There are no terms or definitions to be defined in this document.

4 Principles

The sample is dissolved in a mixed acid of hydrofluoric acid (or hydrochloric acid) and nitric acid, and measured on an inductively coupled plasma atomic emission spectrometer in an acid medium.

The emission intensity of each element is calculated according to the working curve method.

5 Reagents or materials

Unless otherwise stated, only reagents confirmed to be of superior grade purity or above are used in the analysis.

5.1 Water: Class II water or Class I water in compliance with GB/T 6682.

5.2 High purity tin: wSn>=99.999%.

5.3 Tartaric acid.

5.4 Hydrofluoric acid: rho=1.13g/mL.

5.5 Nitric acid: rho=1.42g/mL.