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GB/T 24520-2009 English PDF

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GB/T 24520-2009: Cast iron and low alloy steel -- Determination of lanthanum, cerium and magnesium content -- Inductively coupled plasma atomic emission spectrometric method
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GB/T 24520-2009English299 Add to Cart 3 days [Need to translate] Cast iron and low alloy steel -- Determination of lanthanum, cerium and magnesium content -- Inductively coupled plasma atomic emission spectrometric method Valid GB/T 24520-2009

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Basic data

Standard ID GB/T 24520-2009 (GB/T24520-2009)
Description (Translated English) Cast iron and low alloy steel -- Determination of lanthanum, cerium and magnesium content -- Inductively coupled plasma atomic emission spectrometric method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H11
Classification of International Standard 77.080.01
Word Count Estimation 13,155
Date of Issue 2009-10-30
Date of Implementation 2010-05-01
Quoted Standard GB/T 6379.1; GB/T 6379.2; GB/T 20066
Regulation (derived from) National Standard Approval Announcement 2009 No.12 (Total No.152)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the convergence inductively lanthanum plasma atomic emission spectrometry, cerium and methods of magnesium.

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


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Cast iron and low alloy steel. Determination of lanthanum, cerium and magnesium content. Inductively coupled plasma atomic emission spectrometric method ICS 77.080.01 H11 National Standards of People's Republic of China Determination of cast iron and low-alloy steel lanthanum, cerium and magnesium content Inductively coupled plasma atomic emission spectrometry Posted 2009-10-30 2010-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

Appendix A of this standard is a normative appendix, Appendix B is an informative annex. The standard proposed by China Iron and Steel Association. This standard is under the jurisdiction of the National Steel Standardization Technical Committee. This standard is drafted by. Wuhan Iron and Steel (Group) Company Institute. Participated in the drafting of this standard. Iron and Steel Research Institute, Baosteel Research Institute, Baoshan Iron and testing center, TISCO Technology Center, Steel Technology Center, the first Steel Technology Research Institute, Shandong Metallurgical Research Institute, Jinan Iron and Steel Technology Supervision Department, Handan Iron and Steel Technology Center, Nanjing Iron and Steel Company, China Shipbuilding twelve, Wuhan Iron and Steel Quality Center. The main drafters. Zhang Chunlan, CAO Hong-yan, Chen Shihua, Zhang Suizhong, smell east, Lin Yaping, to record the military, Lu Wenqi. Determination of cast iron and low-alloy steel lanthanum, cerium and magnesium content Inductively coupled plasma atomic emission spectrometry

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. 4.1 high purity iron, lanthanum, cerium, magnesium content of less than 0.0002%. 4.2 hydrochloric acid, ρ about 1.19g/mL 4.3 nitric acid, ρ about 1.42g/mL 4.4 hydrochloric acid - nitric acid mixture, 1 + 1 + 2 4.5 perchloric acid, ρ about 1.67g/mL 4.6 hydrogen peroxide, ρ about 1.10g/mL 4.7 Lanthanum standard solution 4.7.1 lanthanum stock solution, 1.00mg/mL Weigh 1.1728g previously burned at 850 ℃ 30min and cooled to room temperature thirty-two lanthanum oxide (mass fraction of greater than 99.95%) in 250mL beaker, add 30mL of hydrochloric acid (4.2), dissolved by heating. Cooling to room temperature, transferred to 1000mL volumetric flask, dilute to the mark with water Degree, and mix. This solution 1mL containing 1.00mg lanthanum. 4.7.2 lanthanum standard solution, 50.0μg/mL

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