GB/T 6730.90-2025Iron ores - Determination of gold, silver, platinum, palladium contents - Inductively coupled plasma mass spectrometry method (English PDF)

1 Scope

This document describes a method for the determination of gold, silver, platinum and palladium in iron ore by inductively coupled plasma mass spectrometry.

This document is applicable to the determination of gold, silver, platinum and palladium content in iron ore. The determination range is shown in Table 1.

Table 1 Measurement range

The unit is milligrams per kilogram

Element determination range

Gold 0.010~3.00

Silver 0.010~30.00

Platinum 0.0050~12.00

Palladium 0.0050~2.00

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to

This document.

GB/T 602 Preparation of standard solutions for determination of impurities in chemical reagents

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

GB/T 6379.2 Accuracy (trueness and precision) of measurement methods and results Part 2.Determination of repeatability of standard measurement methods

Basic methods of sex and reproducibility

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 values and the expression and determination of limit values

GB/T 10322.1 Iron ore sampling and sample preparation methods

GB/T 12806 Laboratory glassware single-line volumetric flasks

3 Terms and definitions

There are no terms or definitions that require definition in this document. […]