GB/T 13747.8-2017 English PDF

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GB/T 13747.8-2017: Methods for chemical analysis of zirconium and zirconium alloys -- Part 8: Determination of cobalt content -- Nitroso-R-salt spectrophotometry
Status: Valid

GB/T 13747.8: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 13747.8-2017	119	Add to Cart	3 days	Methods for chemical analysis of zirconium and zirconium alloys -- Part 8: Determination of cobalt content -- Nitroso-R-salt spectrophotometry	Valid
GB/T 13747.8-1992	159	Add to Cart	2 days	Zirconium and zirconium alloys. Determination of cobalt content. 1-Nitroso-2-hydroxy-3, 6-naphthalene-disulfonic acid (sodium salt) spectrophotometric method	Obsolete

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GB/T 21183   GB/T 13747.24   GB/T 8769   GB/T 13747.9   GB/T 13747.10   GB/T 13747.4   

Basic data

Standard ID: GB/T 13747.8-2017 (GB/T13747.8-2017)
Description (Translated English): Methods for chemical analysis of zirconium and zirconium alloys -- Part 8: Determination of cobalt content -- Nitroso-R-salt spectrophotometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H63
Classification of International Standard: 77.120.99
Word Count Estimation: 6,686
Date of Issue: 2017-09-29
Date of Implementation: 2018-04-01
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

GB/T 13747.8-2017: Methods for chemical analysis of zirconium and zirconium alloys -- Part 8: Determination of cobalt content -- Nitroso-R-salt spectrophotometry

---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 zirconium and zirconium alloys - Part 8. Determination of cobalt content - Nitroso-R-salt spectrophotometry ICS 77.120.99 H63 National Standards of People's Republic of China Replacing GB/T 13747.8-1992 Methods for chemical analysis of zirconium and zirconium alloys Part 8. Determination of cobalt content Nitroso R salt spectrophotometry Methods for chemical analysis of zirconiumiumandzirconiumaloys- Part 8.Determinationofcobaltcontent- 2017-09-29 Posted 2018-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

GB/T 13747 "zirconium and zirconium alloy chemical analysis method" is divided into 27 parts. --- Part 1. Determination of tin content potassium iodate titration and phenylfluorone - polyethylene glycol octyl phenyl ether spectrophotometry; --- Part 2. Determination of iron content 1,10-phenanthroline spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 3. Determination of nickel content dimethylglyoxime spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 4. Determination of chromium content Diphenylcarbazide spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 5. Determination of aluminum content chrome azure S-tetradecyl pyridine chloride spectrophotometry; --- Part 6. Determination of copper content 2,9-dimethyl-1,10-phenanthroline spectrophotometry; --- Part 7. Determination of manganese content potassium periodate spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 8. Determination of cobalt content Nitroso R salt spectrophotometry; --- Part 9. Determination of magnesium content by flame atomic absorption spectrometry; --- Part 10. Determination of tungsten content thiocyanate spectrophotometry; --- Part 11. Determination of molybdenum content thiocyanate spectrophotometry; --- Part 12. Determination of silicon content Molybdenum blue spectrophotometry; --- Part 13. Determination of lead content polarographic method; --- Part 14. Determination of uranium volume Polarographic method; --- Part 15. Determination of boron content curcumin spectrophotometry; --- Part 16. Determination of chlorine content of silver chloride turbidity and ion selective electrode method; --- Part 17. Determination of cadmium content Polarographic method; --- Part 18. Determination of vanadium content; Benzoylphenylhydroxylamine spectrophotometry; --- Part 19. Determination of titanium content diantipyryl methane spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 20. Determination of hafnium content Inductively coupled plasma atomic emission spectrometry; --- Part 21. Determination of hydrogen content inert gas melting infrared absorption method/thermal conductivity method; Part 22 - Determination of oxygen and nitrogen content - Inert gas fusion infrared absorption method/Thermal conductivity method; --- Part 23. Determination of nitrogen content Distillation separation - Nessler reagent spectrophotometry; --- Part 24. Determination of carbon content High-frequency combustion infrared absorption method; --- Part 25. Determination of niobium content 5-Br-PADAP spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 26. Determination of alloying and impurity elements; Inductively coupled plasma atomic emission spectrometry; --- Part 27. Determination of trace impurity elements Inductively coupled plasma mass spectrometry. This section GB/T 13747 Part 8. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 13747.8-1992 "zirconium and zirconium alloys chemical analysis of nitroso R salt spectrophotometric determination of cobalt." This section compared with GB/T 13747.8-1992, in addition to editorial changes outside the main technical changes are as follows. --- Removed the "reference standard" (Chapter.1992 of Chapter 2); --- Increase the sample terms (see Chapter 5); --- Will be allowed to change the precision of the terms (see Chapter 8,.1992 edition Chapter 8); --- Added test report terms (see Chapter 9). This part is proposed by China Nonferrous Metal Industry Association. This part of the National Non-ferrous Metal Standardization Technical Committee (SAC/TC243) centralized. This part of the drafting unit. Western Metal Materials Co., Ltd., Northwest Nonferrous Metal Research Institute, Bao Titanium Group Co., Ltd., the national standard (North Beijing) Certification Co., Ltd., Guangdong Provincial Industry Analysis and Testing Center. The main drafters of this section. Zhang Bin, Zhai Tongde, Wei Dong, Pauline, Zhou Kai, Miao Lei, Luo Ce, ink Shu Min, Wang Changhua, Zhang Xiaoqin, Xiong Xiaoyan. This part replaces the standards previously issued as. --- GB/T 13747.8-1992. Methods for chemical analysis of zirconium and zirconium alloys Part 8. Determination of cobalt content Nitroso R salt spectrophotometry

1 Scope

This section GB/T 13747 specifies the determination of cobalt content in zirconium and zirconium alloys. This section applies to sponge zirconium, zirconium and zirconium alloy determination of cobalt content. Measurement range. 0.0005% ~ 0.0050%.

2 method summary

The sample was dissolved with hydrofluoric acid and nitric acid. In the presence of citric acid, pH8 or so, α-nitroso-β-naphthol and chloroform extraction of cobalt. In sodium acetate medium cobalt and nitroso R salt red complex was measured at a spectrophotometer wavelength 520nm absorbance measured.

3 reagent

Unless otherwise specified, only reagents that are identified as analytically pure and laboratory-grade water are used in the analysis. 3.1 Metal zirconium (wZr ≧ 99.95%, wCo < 0.0001%). Hydrofluoric acid (ρ = 1.15 g/mL). 3.3 Nitric acid (p = 1.42 g/mL). 3.4 Sulfuric acid (p = 1.84 g/mL). 3.5 Ammonia (p = 0.90 g/mL). 3.6 trichloromethane. 3.7 Hydrochloric acid (1 1). 3.8 Nitric acid (1 1). 3.9 Ammonia (1 1). 3.10 Ammonium citrate solution Weigh 50g ammonium citrate dissolved in 100mL water, add 70mL ammonia (3.5). 3.11 mixed acid in a 100mL volumetric flask by adding 10mL hydrochloric acid (3.7), 1mL nitric acid (3.8), diluted with water to the mark, and mix. 3.12 sodium acetate solution Weigh 50g of sodium acetate (NaCH3COO · 3H2O) was dissolved in 100mL of water. 3.13 nitrosyl R salt solution (2g/L). Weigh 0.2g nitrosyl R salt was dissolved in 100mL of water. 3.14 α-nitroso-β-naphthol solution (2g/L) Weigh 0.2g α-nitroso β-naphthol dissolved in 5mL sodium hydroxide solution (40g/L) In the insoluble matter was filtered, diluted with water to 100mL. 3.15 cobalt standard stock solution Weigh 0.1000g cobalt metal in a 150mL beaker, with 25mL water and 10mL nitric acid (3.3) solution Solution, cooling. Into a 1000mL volumetric flask, diluted with water to the mark, mix well. 1 mL of this solution contains 100 μg of cobalt. 3.16 cobalt standard solution Pipette 25.0mL cobalt standard stock solution (3.15) in 250mL volumetric flask, diluted with water to the mark, and mix. 1 mL of this solution contains 10 μg of cobalt. ......

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