GB/T 5121.20-2008 English PDFUS$169.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 5121.20-2008: Methods for chemical analysis of copper and copper alloys -- Part 20: Determination of zirconium content Status: Valid GB/T 5121.20: Historical versions
Basic dataStandard ID: GB/T 5121.20-2008 (GB/T5121.20-2008)Description (Translated English): Methods for chemical analysis of copper and copper alloys -- Part 20: Determination of zirconium content Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: H13 Classification of International Standard: 77.120.30 Word Count Estimation: 7,789 Date of Issue: 2008-06-17 Date of Implementation: 2008-12-01 Older Standard (superseded by this standard): GB/T 5121.20-1996 Regulation (derived from): National Standard Approval Announcement 2008 No.10 (Total No.123) Issuing agency(ies): General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 method for determination of copper and copper alloys of zirconium. This section applies to the determination of zirconium content of copper and copper alloys. Measuring range: 0 ~ 0. 10% to 70%. GB/T 5121.20-2008: Methods for chemical analysis of copper and copper alloys -- Part 20: Determination of zirconium 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 20. Determination of zirconium content ICS 77.120.30 H13 National Standards of People's Republic of China Replacing GB/T 5121.20-1996 Copper and copper alloys - Part 20. Determination of zirconium 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 ForewordGB/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 20. This Part replaces GB/T 5121.20-1996 "Copper and copper alloys - Determination of zirconium content." This section compared with the GB/T 5121.20-1996, the main changes are as follows. --- Original standard text format has been revised; --- Increasing the precision and quality assurance and control provisions. 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 in part by the Beijing General Research Institute of Mining and Metallurgy, Chinalco Luoyang Copper Co., Ltd. participated in the drafting. The main drafters of this section. Tong Jian, Tong Ling, Zhou Hua. This part certifier. Yuan Yuxia, high Yu, Yindong Xia, Guozhao Xia. This part of the standard replaces the previous editions are. --- GB/T 5121.20-1996. Copper and copper alloys - Part 20. Determination of zirconium content1 ScopeThis section provides the determination of copper and copper alloy of zirconium. This section applies to the determination of copper and copper alloy of zirconium amount measurement range. 0.10% to 0.70%.2 principle of the methodThe sample with hydrochloric acid, hydrogen peroxide dissolved, adjust the pH with perchloric acid, xylenol orange as the color reagent to the sample was added ethylene diamine tetra Acid disodium salt solution after masking zirconium as reference, measure the absorbance in a spectrophotometer at a wavelength of 540nm.3 ReagentsUnless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity. 3.1 hydrochloride (ρ1.19g/mL). 3.2 perchlorate [Ba (HClO4) = 5.0mol/L]. Pipette 278mL perchloric acid (ρ1.67g/mL) was diluted with water to 500mL mix. 3.3 Hydrogen peroxide (ρ1.11g/mL). 3.4 Na2EDTA solution (10g/L). Weigh 10gNa2EDTA dissolved in 400mL warm water cooled to room temperature, diluted with water to 1000mL mix. 3.5 xylenol orange solution (1g/L) stored in a brown bottle. 3.6 Storage zirconium standard solution. Weigh 0.1000g pure zirconium (Zr mass fraction of > 99.9%) were placed in a platinum dish, add 10mL sulfuric acid (1 + 1), 1mL hydrofluoric acid (ρ1.16g/mL), heated until completely dissolved, the solution was evaporated to take a small amount of sulfur trioxide smoke. After cooling, along Dish wall purge a small amount of water, shake the solution and re-evaporated to began to take a small amount of sulfur trioxide smoke. Cooled to room temperature, slowly purged about 25mL Water, mix cooled to room temperature and transferred to 100mL plastic volumetric flask, dilute with water to volume, and mix. 1mL solution containing 1mg zirconium. 3.7 Zirconium standard solution. Pipette 10.00mL zirconium standard stock solution (3.6) in 500mL volumetric flask, was added 30mL of hydrochloric acid (3.1), Diluted with water to the mark, and mix the solution 1mL containing 20μg zirconium.4 InstrumentSpectrophotometer.5 SampleThickness of less than 1mm debris.6 steps6.1 Sample Table 1. Weigh the sample (5) accurate to 0.0001g. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 5121.20-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 5121.20-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 5121.20-2008_English with my colleagues?Answer: Yes. 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