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GB/T 42516-2023 English PDF

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US$179.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 42516-2023: Method for chemical analysis of high temperature shape memory alloys - Determination of platinum content - Thiourea complex precipitation method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 42516-2023	179	Add to Cart	3 days	Method for chemical analysis of high temperature shape memory alloys - Determination of platinum content - Thiourea complex precipitation method	Valid

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Basic data

Standard ID: GB/T 42516-2023 (GB/T42516-2023)
Description (Translated English): Method for chemical analysis of high temperature shape memory alloys - Determination of platinum content - Thiourea complex precipitation method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H15
Classification of International Standard: 77.120.99
Word Count Estimation: 8,866
Date of Issue: 2023-05-23
Date of Implementation: 2023-05-23
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 42516-2023: Method for chemical analysis of high temperature shape memory alloys - Determination of platinum content - Thiourea complex precipitation 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.
ICS 77:120:99 CCSH15 National Standards of People's Republic of China Chemical Analysis Method of High Temperature Shape Memory Alloy Determination of Platinum Content Thiourea Complex Precipitation Method Released on 2023-05-23 2023-05-23 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

foreword

This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting: Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed by China Nonferrous Metals Industry Association: This document is under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243): This document was drafted by: Guohe General Testing and Evaluation Certification Co:, Ltd:, National Standard (Beijing) Inspection and Certification Co:, Ltd:, Youyan Yijin New Materials Materials Co:, Ltd:, Guangdong Academy of Sciences Industrial Analysis and Testing Center, Shenzhen Zhongjin Lingnan Nonferrous Metals Co:, Ltd:, North Mine Testing Technology Co:, Ltd:, Youyan Medical Devices (Beijing) Co:, Ltd:, Shandong Chenyuan Testing Service Co:, Ltd:, China Nonferrous Metals Guilin Mineral Geology Research Institute Research Institute Co:, Ltd:, Shanghai Shashuo New Material Co:, Ltd: The main drafters of this document: Chen Xiongfei, Zhang Qiang, Bai Xiaoyan, Zhang Fang, Bao Yelin, Wu Zhuokui, Zuo Hongyi, Liu Yu, Wang Jiangbo, Feng Zhaowei, Shao Wenying, Tang Lifu, Li Na, Liu Chaofang, Li Xiaoyao, Tan Xiuli, Du Hao, Liu Zhenjiang, Shi Yihua, Yuan Zhishan: Chemical Analysis Method of High Temperature Shape Memory Alloy Determination of Platinum Content Thiourea Complex Precipitation Method Caution --- Personnel using this document need to have practical experience in formal laboratory work: This document does not address all possible security issues question: It is the user's responsibility to take appropriate safety and health measures and ensure compliance with the conditions stipulated in the relevant national laws and regulations:

1 Scope

This document describes a method for the determination of platinum in high temperature shape memory alloys by the thiourea complex precipitation method: This document is applicable to the determination of platinum content in high-temperature shape memory alloys, and the determination range (mass fraction) is 30:00%~70:00%:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document: GB/T 6682 Analytical laboratory water specifications and test methods GB/T 8170 Numerical rounding off rules and expression and determination of limit values GB/T 17433 Basic Terms for Chemical Analysis of Metallurgical Products

3 Terms and Definitions

The terms and definitions defined in GB/T 17433 apply to this document:

4 principles

The sample was dissolved in a mixed acid of hydrochloric acid and nitric acid: Add thiourea and platinum ions into the sulfuric acid medium to form a complex, and continue heating until sulfuration occurs: matter precipitation: The precipitate was filtered, burned to constant weight in a high-temperature furnace at 900°C, and the mass fraction of platinum was calculated:

5 reagents

Unless otherwise stated, only reagents confirmed to be of analytical grade were used in the analysis: 5:1 Water, in line with GB/T 6682 tertiary water regulations: 5:2 Hydrochloric acid-nitric acid mixed acid: mix 3 volumes of hydrochloric acid (ρ=1:19mg/L) and 1 volume of nitric acid (ρ=1:42mg/L), and make up immediately: 5:3 Sulfuric acid solution (1 1): add 1 volume of sulfuric acid (ρ=1:84mg/L) into 1 volume of water while stirring, and mix well: 5:4 Sulfuric acid solution (5 95): Add 5 volumes of sulfuric acid (ρ=1:84mg/L) into 95 volumes of water while stirring, and mix well: 5:5 Thiourea solution (100g/L): Weigh 100g of thiourea and dissolve it in 1000mL of water, and mix well:

6 Instruments and equipment

6:1 Crucible: Porcelain crucible, platinum crucible or quartz crucible, the volume is not less than 30mL: ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 42516-2023_English be delivered?

Answer: Upon your order, we will start to translate GB/T 42516-2023_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 42516-2023_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 42516-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.