GB/T 223.9-2008 English PDF

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GB/T 223.9-2008: Iron, steel and alloy -- Determination of aluminium content -- Chrome azurol S photometric method
Status: Valid

GB/T 223.9: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 223.9-2008	259	Add to Cart	3 days	Iron, steel and alloy -- Determination of aluminium content -- Chrome azurol S photometric method	Valid
GB/T 223.9-2000	319	Add to Cart	3 days	Methods for chemical analysis of iron, steel and alloy -- The chrome azurol S photometric method for the determination of aluminium content	Obsolete
GB/T 223.9-1989	RFQ	ASK	3 days	Methods for chemical analysis of iron, steel and alloy -- The chrome azurol S photometric method for the determination of aluminium content	Obsolete

Similar standards

GB/T 223.88   GB/T 223.89   GB/T 223.82   GBZ/T 223   GB/T 223.5   GB/T 223.11   

Basic data

Standard ID: GB/T 223.9-2008 (GB/T223.9-2008)
Description (Translated English): Iron, steel and alloy -- Determination of aluminium content -- Chrome azurol S photometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H11
Classification of International Standard: 77.080.01
Word Count Estimation: 11,188
Date of Issue: 2008-05-13
Date of Implementation: 2008-11-01
Older Standard (superseded by this standard): GB/T 223.9-2000; GB/T 223.10-2000
Quoted Standard: GB/T 6379.1; GB/T 6379.2; GB/T 20066
Regulation (derived from): National Standard Approval Announcement 2008 No.8 (Total No.121)
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 use Chromazurol S spectrophotometric determination of soluble aluminum and with Cupferron separation-Chromazurol S spectrophotometric determination of aluminum. This section applies to a method of mass fraction for the determination of iron, steel and alloy 0. 050% to 1. 00% acid soluble aluminum content, This section applies to method two steel and alloy for the determination of the mass fraction of 0. 015% to 0. 50% aluminum content.

GB/T 223.9-2008: Iron, steel and alloy -- Determination of aluminium content -- Chrome azurol S photometric 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.
Iron, steel and alloy. Determination of aluminium content. Chrom azurol S photometric method ICS 77.080.01 H11 National Standards of People's Republic of China Replacing GB/T 223.9 ~ 223.10-2000 Determination of aluminum content of steel and alloy Chromium Azure S Spectrophotometry Posted 2008-05-13 2008-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This section GB/T 223 is to GB/T 223.9-2000 "steel and alloy chemical analysis method Chromium Azure S spectrophotometry Given the amount of aluminum "and GB/T 223.10-2000" steel and alloy chemical analysis method cupferron isolated - Chromium Azure S Spectrophotometry The amount of aluminum, "the integration of amendments. This Part replaces GB/T 223.9-2000 and GB/T 223.10-2000. This portion of the GB/T 223.9-2000, GB/T 223.10-2000 compared primarily with the following modifications. --- Name to "iron, steel and aluminum alloys - Determination of chromium content Azure S Spectrophotometry"; --- Original two standards into a single standard, includes two analysis methods; --- Method one. Modify the preparation of a nickel solution; --- Method Two. Modify the preparation of aluminum standard solution; --- Modify the results of the calculation formula, and the formula in the amount of the unit; --- Change the specification of the precision functional description. Appendix A of this section is informative appendix. This part is proposed by the China Iron and Steel Association. This part of the National Steel Standardization Technical Committee. This section drafted by. China Iron and Steel Research Institute Group, Baoshan Iron & Steel Co., Ltd. Special Steel Branch, Daye steel mills. The main drafters of this section. Cuiqiu Hong, Wang Yujuan, painted Renjie. This part of the standard replaces the previous editions are. --- GB/T 223.9-1982, GB/T 223.9-1989, GB/T 223.9-2000; --- GB/T 223.10-1982, GB/T 223.10-1991, GB/T 223.10-2000. Determination of aluminum content of steel and alloy Chromium Azure S Spectrophotometry Warning. Use of this section shall be a person experiences regular laboratory work. This section does not indicate that all possible security issues. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

This section GB/T 223 requirements using Chromium Azure S Spectrophotometry Determination of soluble aluminum and copper and iron separation reagent - CAS S Determination of the aluminum content. This section applies to a method for the mass fraction of iron, steel and alloys for the determination of 0.050% to 1.00% acid soluble aluminum content; this section method Not applicable to steel and alloy content was measured 0.015% to 0.50% aluminum content.

2 Normative references

The following documents contain provisions which, through reference GB/T 223 of this text, 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 6379.1 measurement methods and results of Accuracy (trueness and precision) - Part 1. General principles and definitions GB/T 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the weight of a standard measurement method The basic method of refolding and reproducibility GB/T 20066 Steel and iron - Sampling and determination of the chemical composition of the sample with a sample preparation method

3 a method of direct spectrophotometric Chromium Azure S

3.1 Principle After the sample is dissolved by acid at pH (5.3 to 5.9) in acid medium, aluminum and chrome azure S generated purple complex measure Absorbance. Vanadium-containing 100μg color solution, 2mg not interfere with the determination of chromium, iron, nickel interference masking available Zn-EDTA, 300μg titanium available 0.15g mannitol masking. 3.2 Reagents and materials Unless otherwise stated, the analysis using only the confirmation of analytical grade reagents and distilled water or its equivalent purity. 3.2.1 iron, aluminum or known to contain residual aluminum content. 3.2.2 hydrochloric acid, ρ about 1.19g/mL. 3.2.3 hydrochloride, ρ of about 1.19g/mL, diluted to 5 + 95. 3.2.4 nitrate, ρ about 1.42g/mL. 3.2.5 perchloric acid, ρ about 1.67g/mL. 3.2.6 mannitol solution, 50g/L. 3.2.7 hexamethylenetetramine solution, 400g/L, stored in a plastic bottle. 3.2.8 ammonium fluoride solution, 5g/L, stored in a plastic bottle. 3.2.9 Chromium Azure S solution, 0.5g/L. 3.2.10 edetate zinc (Zn-EDTA) solution. Weigh 8.1g of zinc oxide in a beaker, add 40mL of hydrochloric acid (1 + 1) heating the solution ......

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