GB/T 21933.3-2008 English PDF

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GB/T 21933.3-2008: Ferronickel -- Determination of cobalt content -- Flame atomic absorption spectrometric method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 21933.3-2008	134	Add to Cart	3 days	Ferronickel -- Determination of cobalt content -- Flame atomic absorption spectrometric method	Valid

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GB/T 21933.1   GB/T 21931.1   GB/T 21933.2   GB/T 21931.2   

Basic data

Standard ID: GB/T 21933.3-2008 (GB/T21933.3-2008)
Description (Translated English): Ferronickel -- Determination of cobalt content -- Flame atomic absorption spectrometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H11
Classification of International Standard: 77.100
Word Count Estimation: 7,752
Date of Issue: 2008-05-30
Date of Implementation: 2008-12-01
Quoted Standard: GB/T 12805; GB/T 12806; GB/T 12808; GB/T 6379.1; GB/T 6379.2; GB/T 21933.1
Adopted Standard: ISO 7520-1985, IDT
Regulation (derived from): National Standard Approval Announcement 2008 No.9 (Total No.122)
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 determination of nickel iron cobalt content by flame atomic absorption spectrometry. This section applies to the determination of nickel iron cobalt content. Measuring range (mass fraction): 0. 025 % to 2. 5 %.

GB/T 21933.3-2008: Ferronickel -- Determination of cobalt content -- Flame atomic absorption spectrometric method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Ferronickel. Determination of cobalt content. Flame atomic absorption spectrometric method ICS 77.100 H11 National Standards of People's Republic of China GB/T 21933.3-2008/ISO 7520. 1985 Determination of nickel iron cobalt content Flame Atomic Absorption Spectrometry (ISO 7520. 1985, IDT) Posted 2008-05-30 2008-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 21933 is identical with this part of ISO 7520. 1985 "nickel-iron-cobalt content - Flame Atomic Absorption Spectrometry." This part of ISO 7520. 1985 technical content is identical, for ease of use, this section was amended as follows. a) "this International Standard" be replaced by "this section"; b) use a decimal point instead of a decimal comma ",". ","; c) Remove the preface to international standards; d) Normative references national standards. This part is proposed by the China Iron and Steel Association. This section is under the jurisdiction of Metallurgical Industry Information Standards Institute. This section is drafted. Shanxi Taigang Stainless Steel. The main drafters of this section. Daixue Qian, Liu Aikun, Wu Jing. GB/T 21933.3-2008/ISO 7520. 1985 Determination of nickel iron cobalt content Flame Atomic Absorption Spectrometry Warning. Use of this section shall be a person experiences regular laboratory work. This section does not point out all possible security asked question. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

GB/T 21933 provisions of this part of the determination of nickel iron cobalt content by flame atomic absorption spectrometry. This section applies to the determination of nickel iron cobalt content measurement range (mass fraction). 0.025% to 2.5%.

2 Normative references

The following documents contain provisions which, through reference GB/T 21933 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 12805 Laboratory glassware Burettes GB/T 12806 Laboratory glassware single marking flask GB/T 12808 Laboratory glassware single marking pipette 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 repeatability And reproducibility of the basic method (GB/T 6379.2-2004, ISO 5725-2.1994, IDT) GB/T 21933.1 Determination of nickel iron and nickel dimethylglyoxime gravimetric method (GB/T 21933.1-2008, ISO 6352. 1985, IDT) Principle 3 Samples with nitric acid - hydrochloric acid mixture exploded, perchloric acid dehydration precipitated silica, precipitated silica filtration. The filtrate was added to eliminate the ionization interference lanthanum, diluted with water Diluted to a certain volume, spray into the air - acetylene flame in atomic absorption spectrometer at a wavelength of 240.7nm, absorbance was measured. Note. This analysis can be carried out according to GB/T 21933.1 Determination of nickel has a solution.

4 Reagents and materials

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled water or its equivalent purity water. 4.1 hydrochloride, ρ1.19g/mL. 4.2 perchloric acid, ρ1.67g/mL. Nitrate 4.3, 1 + 1. Hydrofluoric acid 4.4, 1 + 1. 4.5 HCl, 1 + 9. 4.6 lanthanum solution. Weigh 250g of lanthanum chloride hexahydrate (LaCl3 · 6H2O) in 600mL beaker, add 25mL of hydrochloric acid (4.1) and 300mL water. Stir until completely dissolved. If necessary, filtered in 500mL volumetric flask, dilute with water to volume, and mix. The solution containing lanthanum 200g/L. GB/T 21933.3-2008/ISO 7520. 1985 ......

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