GB/T 24520-2009Cast iron and low alloy steel - Determination of lanthanum, cerium and magnesium content - Inductively coupled plasma atomic emission spectrometric method (English PDF)

1 Scope

This standard specifies the method by inductively coupled plasma atomic emission spectrometry determination of lanthanum, cerium and magnesium.

This method is applicable to the determination of low alloy steel cast iron and lanthanum, cerium and magnesium content. Measuring range (mass fraction). lanthanum, 0.002% ~

0.10%; cerium, 0.005% to 0.15%; Mg, 0.003% to 0.15%.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research

Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 6379.1 measurement methods and results of Accuracy (trueness and precision) - Part 1. General principles and definitions (GB/T 6379.1-2004, ISO 5725-1.1994, IDT)

GB/T 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the standard measurement method to repeat

Of the basic methods of reproduction (GB/T 6379.2-2004, ISO 5725-2.1994, IDT)

GB/T 20066 Steel and iron - Sampling and determination of chemical composition of the preparation of samples (GB/T 20066-2006 use, ISO 14284.

1996, IDT)

Principle 3

Samples with hydrochloric acid, mixed nitric acid decomposition, perchloric acid smoke, a mixed acid dissolved salts, the test solution was diluted to a certain volume, dry filter. in

Inductively coupled plasma atomic emission spectrometer, at the recommended wavelength or other suitable wavelength measuring element analysis of hair sample solution

The intensity of emission spectrum, mass fraction calculated from the calibration curve of lanthanum, cerium, and magnesium.

4 Reagents

Unless otherwise indicated in the analysis using only recognized as analytical reagents and secondary distilled water or equivalent purity.