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GB/T 4698.5-2017: Methods for chemical analysis of titanium sponge, titanium and titanium alloys -- Part 5: Determination of molybdenum content -- Thiocyanate spectrophotometry and inductively coupled plasma atomic emission spectrometry
Status: Valid GB/T 4698.5: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 4698.5-2017 | English | 199 |
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Methods for chemical analysis of titanium sponge, titanium and titanium alloys -- Part 5: Determination of molybdenum content -- Thiocyanate spectrophotometry and inductively coupled plasma atomic emission spectrometry
| Valid |
GB/T 4698.5-2017
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| GB/T 4698.5-1996 | English | 159 |
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Sponge titanium, titanium and titanium alloys. Determination of molybdenum content. Thiocyanate spectrophotometric method
| Obsolete |
GB/T 4698.5-1996
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| GB/T 4698.5-1984 | English | RFQ |
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Methods for chemical analysis of titanium and titanium alloys--The thiocyanate photometric method for the determination of molybdenum content
| Obsolete |
GB/T 4698.5-1984
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PDF similar to GB/T 4698.5-2017
Basic data | Standard ID | GB/T 4698.5-2017 (GB/T4698.5-2017) | | Description (Translated English) | Methods for chemical analysis of titanium sponge, titanium and titanium alloys -- Part 5: Determination of molybdenum content -- Thiocyanate spectrophotometry and inductively coupled plasma atomic emission spectrometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H14 | | Classification of International Standard | 77.120.50 | | Word Count Estimation | 10,147 | | 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 4698.5-2017: Methods for chemical analysis of titanium sponge, titanium and titanium alloys -- Part 5: Determination of molybdenum content -- Thiocyanate spectrophotometry and inductively coupled plasma atomic emission spectrometry
---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 titanium sponge, titanium and titanium alloys - Part 5. Determination of molybdenum content - Thiocyanate spectrophotometry and inductively coupled plasma atomic emission spectrometry
ICS 77.120.50
H14
National Standards of People's Republic of China
Replacing GB/T 4698.5-1996
Sponge titanium, titanium and titanium alloys - Methods for chemical analysis
Part 5. Determination of molybdenum content thiocyanate
Spectrophotometry and inductive coupling
Ion Atomic Emission Spectrometry
Methods for chemical analysis of titanium compounds, titaniumandtitanium
aloys-Part 5.Determination of molybdenum content-Thiocyanate
2017-09-29 Release.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 4698 "titanium sponge, titanium and titanium alloy chemical analysis method" is divided into the following sections.
--- Part 1. Determination of copper content by flame atomic absorption spectrometry;
--- Part 2. Determination of iron content;
--- Part 3. Determination of silicon content molybdenum blue spectrophotometry;
--- Part 4. Determination of manganese content Periodate spectrophotometry and inductively coupled plasma atomic emission spectrometry;
--- Part 5. Determination of molybdenum content thiocyanate spectrophotometry and inductively coupled plasma atomic emission spectrometry;
--- Part 6. Determination of boron content Methylene blue spectrophotometry and inductively coupled plasma atomic emission spectrometry
--- Part 7. Determination of oxygen content, nitrogen content;
--- Part 8. Determination of aluminum content Alkaline separation - EDTA complexometric titration and inductively coupled plasma atomic emission spectrometry;
--- Part 9. Determination of tin content potassium iodate titration and inductively coupled plasma atomic emission spectrometry;
--- Part 10. Determination of chromium content Ferrous ammonium sulfate titration and inductively coupled plasma atomic emission spectrometry (including vanadium);
--- Part 11. Determination of chromium content ferrous ammonium sulfate titration (excluding vanadium);
--- Part 12. Determination of vanadium content ammonium ferrous sulfate titration and inductively coupled plasma atomic emission spectrometry;
--- Part 13. Determination of zirconium content EDTA complexometric titration and inductively coupled plasma atomic emission spectrometry;
--- Part 14. Determination of carbon content;
--- Part 15. Determination of hydrogen content;
--- Part 17. Determination of magnesium content by flame atomic absorption spectrometry;
--- Part 18. Determination of tin content by flame atomic absorption spectrometry;
--- Part 19. Determination of molybdenum content; Thiocyanate spectrophotometric method;
--- Part 21. Determination of manganese, chromium, nickel, aluminum, molybdenum, tin, vanadium, yttrium, copper, zirconium content atomic emission spectrometry
--- Part 22. Determination of niobium content 5-Br-PADAP spectrophotometry and inductively coupled plasma atomic emission spectrometry;
--- Part 23. Determination of palladium content Stannous chloride - potassium iodide spectrophotometry and inductively coupled plasma atomic emission spectrometry;
--- Part 24. Determination of nickel content dimethylglyoxime spectrophotometry and inductively coupled plasma atomic emission spectrometry;
--- Part 25. Determination of chlorine content of silver chloride spectrophotometry;
--- Part 26. Determination of tantalum content and tungsten content; Inductively coupled plasma atomic emission spectrometry;
--- Part 27. Determination of neodymium content by inductively coupled plasma atomic emission spectrometry;
--- Part 28. Determination of ruthenium content Inductively coupled plasma atomic emission spectrometry.
This section GB/T 4698 Part 5.
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Part replaces GB/T 4698.5-1996 "titanium sponge, titanium and titanium alloys - Determination of molybdenum by thiocyanate spectrophotometry
the amount".
This section compared with GB/T 4698.5-1996 main changes are as follows.
--- Removed the "reference standard" (1996 edition of Chapter 2);
--- Retained spectrophotometry, the determination of the range from "0.10% ~ 12.00%" expanded to "0.10% ~ 16.00%", an increase of sample terms
(See 2.4) and precision terms (see 2.7, Chapter 8 of the.1996 edition);
--- Increasing the inductively coupled plasma atomic emission spectrometry, the determination of the range of 0.10% ~ 16.00% (see Chapter 3);
--- Added test report terms (see Chapter 4).
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. Northwest Nonferrous Metal Research Institute, Bao Titanium Group Co., Ltd., Western Metal Materials Co., Ltd., the national standard (North
Beijing) Inspection and Certification Co., Ltd., Shenyang Nonferrous Metals Processing Co., Ltd., Guangdong Province, Industrial Analysis and Testing Center, Zunyi Titanium Co., Ltd.
Company, Jinduicheng Molybdenum Co., Ltd., Zun Bao Titanium Co., Ltd.
The main drafters of this section. Yang Pingping, Liu Lei Lei, Li Bo, Sun Baolian, Wang Xiaoyan, Liu Ting, Kong Lingchen, Luo Ce, Li Jian, Li Haiyan,
Liu Houyong, Chen Yingchun, Luo Shaowei, Li Manzhi, Liu Liyuan, Sun Aiping, Li Yamin, Chen Yufeng, Yang Guang, Zhang Tianyou, Zhang Xiaoqin, Xiong Xiaoyan,
Qin Junrong, Zhang Yongjin, Qu Xinwei, Zhang Jinjie, Li Hua, Xie Mingming, Liu Yanbo, Yang Zaijiang, Yang Xuexin.
This part replaces the standards previously issued.
--- GB/T 4698.5-1996.
Sponge titanium, titanium and titanium alloys - Methods for chemical analysis
Part 5. Determination of molybdenum content thiocyanate
Spectrophotometry and inductive coupling
Ion Atomic Emission Spectrometry
1 Scope
GB/T 4698 provisions of this section sponge titanium, titanium and titanium alloys in the determination of the amount.
This section applies to the determination of molybdenum content of sponge titanium, titanium and titanium alloys. Determination range .0.10% ~ 16.00%. The first method is arbitration
Analysis method.
2 Method A thiocyanate spectrophotometry
2.1 Method summary
The sample is dissolved in sulfuric acid. In sulfuric acid medium, molybdenum (Ⅴ) is reduced to molybdenum (Ⅴ) by thiourea using copper (Ⅱ) as catalyst.
The cyanate generates an orange-red complex and its absorbance was measured at a spectrophotometer wavelength of 465 nm.
2.2 Reagents
Unless otherwise stated, only reagents identified as analytical grade and laboratory grade II water were used in the analysis.
2.2.1 Nitric acid (p = 1.42 g/mL).
2.2.2 Sulfuric acid (1 1).
2.2.3 potassium thiocyanate solution (500g/L).
2.2.4 copper sulfate solution (20g/L).
2.2.5 thiourea solution (100g/L).
2.2.6 titanium matrix solution Weigh 0.500g titanium metal (wTi ≥ 99.95%, wMo < 0.001%) in a 150mL beaker, the following press
2.5.4.1. 1 mL of this solution contains 2 mg titanium.
2.2.7 molybdenum standard storage solution Weigh 0.5000g metal molybdenum (wMo ≥ 99.95%) in 400mL beaker, add 50mL sulfuric acid
(2.2.2), 30mL of nitric acid (2.2.1), covered with a watch glass, heated to completely dissolve and continue heating to take sulfuric acid smoke, cooled, add 50mL
Water, heated to dissolve salts, cooled, transferred to 500mL volumetric flask, diluted with water to the mark, mix well. This solution 1 mL contains 1.0 mg molybdenum.
2.2.8 molybdenum standard solution Pipette 10.00mL molybdenum standard stock solution (2.2.7) in 100mL volumetric flask, diluted with water to the mark, mixed
uniform. This solution 1 mL contains 100 μg molybdenum.
2.3 Instruments
Spectrophotometer.
2.4 sample
In accordance with the promulgated sponge titanium, titanium and titanium alloy take sample preparation standards.
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