GB/T 5121.17-2008 English PDF

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GB/T 5121.17-2008: Methods for chemical analysis of copper and copper alloys -- Part 17: Determination of beryllium content
Status: Valid

GB/T 5121.17: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 5121.17-2008	169	Add to Cart	3 days	Methods for chemical analysis of copper and copper alloys -- Part 17: Determination of beryllium content	Valid
GB/T 5121.17-1996	199	Add to Cart	2 days	Copper and copper alloys--Determination of beryllium content	Obsolete

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Basic data

Standard ID: GB/T 5121.17-2008 (GB/T5121.17-2008)
Description (Translated English): Methods for chemical analysis of copper and copper alloys -- Part 17: Determination of beryllium content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.120.30
Word Count Estimation: 7,766
Date of Issue: 2008-06-17
Date of Implementation: 2008-12-01
Older Standard (superseded by this standard): GB/T 5121.17-1996
Regulation (derived from): National Standard Approval Announcement 2008 No.10 (Total No.123)
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 beryllium in the beryllium content. This section applies to the determination of beryllium in the beryllium content. Measuring range: 0. 100% to 2. 50%.

GB/T 5121.17-2008: Methods for chemical analysis of copper and copper alloys -- Part 17: Determination of beryllium content

---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.
Methods for chemical analysis of copper and copper alloys Part 17. Determination of beryllium content ICS 77.120.30 H13 National Standards of People's Republic of China Replacing GB/T 5121.17-1996 Copper and copper alloys - Part 17. Determination of beryllium content Posted 2008-06-17 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 5121 "Copper and copper alloy chemical analysis method" a total of 27 sections. --- Part 1. Determination of copper content; --- Part 2. Determination of phosphorus content; --- Part 3. Determination of lead content; --- Part 4. Carbon, Determination of sulfur content; --- Part 5. Determination of nickel content; --- Part 6. Determination of bismuth content; --- Part 7. Determination of arsenic content; --- Part 8. Determination of oxygen content; --- Part 9. Determination of iron content; --- Part 10. Determination of tin content; --- Part 11. Determination of zinc content; --- Part 12. Determination of antimony content; --- Part 13. Determination of aluminum content; --- Part 14. Determination of manganese content; --- Part 15. Determination of cobalt content; --- Part 16. Determination of chromium content; --- Part 17. Determination of beryllium content; --- Part 18. Determination of magnesium content; --- Part 19. Determination of silver content; --- Part 20. Determination of zirconium content; --- Part 21. Determination of titanium content; --- Part 22. Determination of cadmium content; --- Part 23. Determination of silicon content; --- Part 24. selenium, tellurium content was measured; --- Part 25. Determination of boron content; --- Part 26. Determination of mercury content; --- Part 27. Inductively coupled plasma atomic emission spectrometry. This is Part 17. This Part replaces GB/T 5121.17-1996 "Copper and copper alloys - Determination of beryllium content." This portion of the GB/T 5121.17-1996 compared to the main changes are as follows. --- Using Eriochrome cyanine R spectrophotometric method instead of the original standard weight method; --- Omitted "reference standard" one; --- Supplementary terms of quality assurance and control, increasing the precision of the terms. This part is proposed by the China Nonferrous Metals Industry Association. The non-ferrous metal part by the National Standardization Technical Committee. This section Chinalco Luoyang Copper Co., Ltd., Beijing General Research Institute of Mining and Metallurgy, China Nonferrous Metals Industry is responsible Institute of Standards Metrology and Quality Drafted. This section was drafted by the Beijing Nonferrous Metal Research Institute. This part in drafting the northwest Gansu Baiyin Copper Co., Ltd., aluminum Shenyang Nonferrous Metals Processing Co., Ltd. The main drafters of this section. Liu Ying, Zhang Zhuo, LI Man Chi. This part certifier. Yang Guiping, Sun Aiping, Zhao Yi, Zhang Hao. This part of the standard replaces the previous editions are. --- GB/T 5121.17-1996. Copper and copper alloys - Part 17. Determination of beryllium content

1 Scope

This section provides the determination of beryllium in the beryllium content. This section applies to the determination of beryllium in the beryllium content. Measurement range. 0.100% to 2.50%.

2 principle of the method

The sample is dissolved in nitric acid, the ammonia buffer solution, beryllium and chromium wool cyanine R to form a red complex at 550nm wavelength spectrophotometer Measured absorbance.

3 Reagents

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity. 3.1 copper (mass fraction of greater than 99.99% copper, beryllium mass fraction of less than 0.001%). 3.2 ammonium chloride. Nitrate 3.3 (ρ1.42g/mL). 3.4 hydrochloride (ρ1.19g/mL). 3.5 nitric acid (1 + 1). 3.6 HCl (1 + 1). 3.7 Ammonia (ρ0.90g/mL). 3.8 Na2EDTA (15g/L). 3.9 Sodium hydroxide (40g/L). 3.10 Congo red. 3.11 Eriochrome cyanine R ammonia buffer solution (4g/L). Weigh 6.8g of ammonium chloride (3.2) in the 150mL beaker, add 20mL water to Ammonium chloride dissolved completely, adding 57mL ammonia (3.7), stir until the solution was allowed to room temperature. Was added 0.400g accurate eriochrome cyanine R, stirring eriochrome cyanine R completely dissolved, the solution is transferred to 100mL volumetric flask, mixing, placing 1h after use (when used with now). 3.12 Beryllium standard stock solution. Weigh accurately 0.1000g metal beryllium (beryllium content of not less than 99.95%) in the 150mL beaker, Added 10mL of hydrochloric acid (3.6), low heat to dissolve completely. After cooling, the solution is transferred to 1000mL volumetric flask, dilute to the mark with water Degree, and mix. This solution 1mL containing 100μg beryllium. 3.13 Beryllium standard solution. Pipette 25.00mL Beryllium standard solution (3.12) was placed in 250mL volumetric flask 9mL nitric acid (3.5), Volume with water and mix. This solution 1mL containing 10μg beryllium.

4 Instrument

Spectrophotometer.

5 Sample

Thickness of less than 1mm debris. ......

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