GB/T 223.80-2007 English PDF

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GB/T 223.80-2007: Iron, steel and alloy - Determination of trace bismuth and arsenic contents - Hydride generation-atomic fluorescence spectrometric method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 223.80-2007	239	Add to Cart	3 days	Iron, steel and alloy - Determination of trace bismuth and arsenic contents - Hydride generation-atomic fluorescence spectrometric method	Valid

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Basic data

Standard ID: GB/T 223.80-2007 (GB/T223.80-2007)
Description (Translated English): Iron, steel and alloy - Determination of trace bismuth and arsenic contents - Hydride generation-atomic fluorescence spectrometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H11
Classification of International Standard: 77.080.01
Word Count Estimation: 9,929
Date of Issue: 2007-09-11
Date of Implementation: 2008-02-01
Quoted Standard: GB/T 6379.1; GB/T 6379.2; GB/T 20066
Regulation (derived from): China National Standard Approval Announcement2007 No.11 (Total No.111)
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 hydride generation-atomic fluorescence spectrometry-Determination of iron, steel and alloys of bismuth and arsenic content approach. This method is applicable to the determination of bismuth and arsenic in steel and nickel-based alloys. Determination of bismuth content range: 0. 000 05% to 0. 01%, arsenic measured mass fraction range: 0. 000 05% to 0. 01 %.

GB/T 223.80-2007: Iron, steel and alloy - Determination of trace bismuth and arsenic contents - Hydride generation-atomic fluorescence 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.
Iron, steel and alloy. Determination of trace bismuth and arsenic contents. Hydride generation-atomic fluorescence spectrometric method ICS 77.080.01 H11 National Standards of People's Republic of China Determination of steel and alloy bismuth and arsenic content Hydride Generation - Atomic Fluorescence Spectrometry Posted 2007-09-11 2008-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 223 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 is responsible for drafting unit. Iron and Steel Institute. The main drafters of this section. ROCKETS, Liu. Determination of steel and alloy bismuth and arsenic content Hydride Generation - Atomic Fluorescence Spectrometry

1 Scope

GB/T 223 provisions of this section using hydride generation - Determination of bismuth and arsenic in steel and alloy by atomic fluorescence spectrometry method. This method is applicable to the determination of bismuth and arsenic in steel and nickel-based alloys. Determination of bismuth content range. 0.00005% to 0.01%; Determination of arsenic content range. 0.00005% to 0.01%.

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 6379.1-2004, 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 - Determination of the chemical composition of the sample probe and sample preparation method (GB/T 20066-2006, ISO 14284. 1996, IDT) Principle 3 Samples with hydrochloric acid, nitric acid dissolved, thiosemicarbazide suppress interference matrix element, such as tungsten with phosphoric acid complex is easily hydrolyzed elements, with anti-bad Ascorbic acid solution of arsenic (Ⅴ) reduction of arsenic (Ⅲ). With potassium borohydride as a reducing agent, reduced to produce bismuth, arsenic hydride, by a carrier gas (argon) with The quartz atomizer in atomic, atomic fluorescence produced in special bismuth, arsenic hollow cathode lamps emit light excitation, the measured atomic fluorescence strength.

4 Reagents and materials

Unless otherwise indicated, used in the analysis confirmed only for the gifted class pure reagents and secondary distilled water or equivalent purity. 4.1 hydrochloric acid, ρ about 1.19g/mL. 4.2 nitric acid, ρ about 1.42g/mL. 4.3 sulfuric acid, ρ about 1.84g/mL. 4.4 phosphoric acid, ρ about 1.69g/mL. 4.5 hydrobromide, ρ about 1.49g/mL. 4.6 sulfuric acid - mixing phosphoric acid, sulfuric acid, phosphoric acid + water + = 1 + 1 + 2. 300mL beaker was added in 20mL of water was added with stirring 120mL of sulfuric acid (4.3) and 120mL phosphoric acid (4.4), cooled to room Temperature, stirring was added 20mL hydrobromic acid (4.5), is heated and evaporated to take the white smoke of sulfuric acid, is removed, cooled to room temperature, the above-described operation is repeated (2 ~ 3) times. With a small amount of water purged table dish and cup wall, heating evaporation to take the white smoke of sulfuric acid, repeat (2-3) times to remove residual hydrobromide. in 1000mL beaker add water 200mL, 200mL added with stirring the above purified phosphoric acid sulfuric acid mixture, cooled to room temperature and transferred to plastic Feeding bottle aside. ......

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